Service Station Development: Contamination and Planning

A site with tanks in the ground carries duties that attach to whoever owns it, so the order you do things in matters as much as who you call. The desktop work is cheap and comes first: historical aerial photography, title history and a register search will tell you whether a site is worth pursuing before you have spent anything meaningful on it. If it is, the two engagements worth making are a contaminated land consultant to scope what investigation the site actually needs, and a lawyer who deals with environmental liability to read the contract. Both while you still have room to walk away or reprice.

Most of the obligations on a fuel site attach to the land and to whoever owns or controls it, rather than to the person who caused the problem. In several states a duty to report contamination falls on the current owner even where the contamination predates their ownership, and a failure to report carries penalties in the hundreds of thousands or millions of dollars. In Western Australia a classification can put a memorial on the title that blocks subdivision. In Queensland a register entry follows the land and has to be disclosed before you sell. Those consequences land on you, not on your consultant and not on the operator who ran the site for twenty years.

This guide sets out what the rules are and where they sit, so you can have a sharper conversation with your advisers. It does not answer whether a particular site is worth buying. The figures, thresholds and section numbers here were current at the date of writing and they change. Each is linked to the primary source, which is where to confirm the position before you rely on it.

What makes a service station different from other small commercial developments?

A service station is a small building sitting on a large, heavily engineered piece of land that the regulator treats as an environmental asset with a statutory duty trail attached. That is the whole difference.

The convenience store might be a few hundred square metres of straightforward retail construction. Everything else is the development: the tank farm, the product lines, the leak detection system, the groundwater monitoring wells, the forecourt slab and its falls, the interceptor and drainage separation, the canopy, the vehicle circulation, and the crossovers onto what is often a classified road. A cost estimate built up from a rate per square metre of building area will miss most of the project, which is one of the few places where the usual cost per square metre shortcut breaks down completely.

Liability also runs long. Once petroleum enters the soil profile it tends to stay there, and the obligations to investigate, report and manage it generally sit with whoever is in management or control of the land at the time. The land use is contentious too: applications regularly attract objections on traffic, noise, light spill, odour and amenity grounds, and the assessment tends to turn on separation from sensitive uses rather than on floor area or height.

Which approvals does a service station development actually need?

A new service station generally needs four separate approval streams running in parallel, answering to four different bodies.

Planning approval, by development application or planning permit to the council or, where the pathway allows, a state assessment body, typically assessed against a service station code plus traffic, acoustic, lighting, stormwater and contamination assessments.

Building approval, following the ordinary pathway. The fuel system is governed separately, principally through Australian Standards called up by state regulation, and through work health and safety law for the installation and any later removal.

Environmental and dangerous goods approvals, which vary more than anything else between jurisdictions. Some states require a licence to operate. Others impose duties without one once the stored quantity crosses a notification threshold.

Road authority approval for crossovers, turning movements and any work in the road reserve. In New South Wales that means consent under section 138 of the Roads Act 1993, and on a classified road the consent cannot be granted except with the concurrence of Transport for NSW.

The road authority concurrence and the environmental audit most often set the critical path.

How is a service station defined in planning law, and why does the definition matter?

The definition matters because it decides which zone you can build in, which code applies, and whether adding something to the site counts as a change of use.

Victoria’s definition is the most instructive, because it was updated to deal with electric vehicles. Clause 73.03 of the Victoria Planning Provisions defines a service station as:

“Land used to sell motor vehicle fuel from bowsers or charge electric vehicles. It may include the: a) selling of motor vehicle lubricants, accessories or parts; b) selling of food, drinks and other convenience goods; c) hiring of trailers; d) servicing or washing of motor vehicles; and e) installing of motor vehicle accessories or parts.”

Two things follow. Charging electric vehicles is inside the definition, so a Victorian site that adds charging is not thereby changing its use. And the convenience retail, food and car wash components are captured within the service station term rather than being separate uses, which affects how the application is framed.

In New South Wales the land use definition sits in the dictionary to the Standard Instrument (Local Environmental Plans) Order 2006, picked up by each council’s Local Environmental Plan, and permissibility runs through the employment zones introduced by the employment zones reform, which replaced the old business and industrial zones with E1 Local Centre, E2 Commercial Centre, E3 Productivity Support, E4 General Industrial and E5 Heavy Industrial. In Queensland the administrative definition sits in schedule 24 of the Planning Regulation 2017 and is picked up by each council’s planning scheme.

Whether a service station is permissible with consent in a given zone is a council-by-council question in New South Wales and Queensland, because both systems let the local instrument set the land use table. The definition and the zone table are the first two things worth checking.

What does the fuel system commit you to once it is in the ground?

The fuel system converts the site into a regulated installation with continuing monitoring, record keeping and reporting obligations, and those obligations transfer with the land.

New South Wales: the underground petroleum storage systems regulation

New South Wales has the most prescriptive regime in the country. The Protection of the Environment Operations (Underground Petroleum Storage Systems) Regulation 2019 commenced on 1 September 2019 and applies to underground systems, excluding wholly above-ground tanks, sumps and separators, bunded tanks sitting below ground level but not in the ground, and liquefied petroleum gas systems.

The duties fall on the “person responsible”, which clause 4 defines as the person with management and control of the system, and where a system is no longer in use and that person cannot be located, the owner of the land. That last limb is the one developers tend to discover late. The core obligations include the following.

• Equipment standard. Clause 8(a) requires the system to include “the equipment required by AS 4897-2008: The design, installation and operation of underground petroleum storage systems, as in force from time to time”. Clause 12(2) exempts a system commissioned before 1 June 2008 unless the modification is a “significant modification”, defined as replacement of the whole system or of half or more of the tanks.
• Leak detection. Clause 15(1) prohibits use of a system without a leak detection system. Where groundwater monitoring wells are used, clause 15(2) requires the number and location to be set by a duly qualified person “with a view to maximising the likelihood that the wells will intercept contaminated groundwater, whatever the groundwater flow conditions”. Clause 20(1) requires groundwater in each well to have been tested during the last six months, and sampled and analysed within 60 days of installing a new well, discovering possible groundwater contamination, or discovering a leak.
• Fuel system operation plan. Clause 18(2) requires a documented plan covering a loss monitoring system, an incident management procedure, a maintenance schedule, current as-built drawings, a site plan showing the system, buildings, monitoring wells, unsealed ground, drainage and services, the industry standards followed, design specifications, and a record of staff induction and incident training. Clause 18(4) requires the loss monitoring system to measure discrepancies between the amount of petroleum that should be present and the amount actually present.
• Leak response. Clause 21(1) requires action within 60 days of becoming aware of a discrepancy: investigate it, confirm whether it is a leak, and if so identify the source and stop it. Part 5.7 of the Act imposes separate pollution incident notification duties.
• Decommissioning notice. Clause 23 requires notice to the relevant local authority no later than 30 days before a system is decommissioned or removed, or as soon as reasonably practicable where the decommissioning is urgent and unforeseen. A decommissioning report assessing contamination at the site must then be served no later than 60 days after decommissioning, or 60 days after remediation is completed. Clause 24 applies the same 60-day requirement where a modification involves removing or replacing any tank, and the modified system cannot be commissioned until the report has been served.
• Records. Clauses 26 and 27 require documents to be kept at least seven years from creation and at least seven years from decommissioning. Clause 28 requires them to be delivered to the incoming person responsible within 30 days of a change of responsibility.

That last obligation is worth sitting with. If you buy an operating site, the outgoing operator’s records are supposed to come to you within 30 days, and those records are the evidence base for any later argument about when a leak started. Where they do not arrive, you may be the one with the reporting duty and no history to go with it.

On removal, SafeWork NSW takes the position that a tank not used to store flammable liquid for two years, or not intended to be used again, is an abandoned tank, that SafeWork must be notified, that the system must be removed if no longer in use, and that where removal is not reasonably practicable the tank should be decommissioned in accordance with AS 4976-2008. It also states that this work requires a licensed demolition contractor authorised for chemical installations. See its safety alert on removing underground storage tanks.

The other states and territories

The instruments differ, and so does whether a licence is needed at all.

South Australia requires a licence to operate. Environment Protection Authority South Australia states that “As of 1 January 2020 all petrol stations are required to hold an EPA licence (authorisation)”, and points to AS 1940-2017, AS 4897-2008 and AS 4976-2008 for design, operation and tank removal on its page on underground storage systems.

The Australian Capital Territory also requires an authorisation. Access Canberra states that “you need an Environmental Authorisation” to operate a petrol or service station, which it describes as a facility designed to store more than 50,000 litres of petroleum products, with the applicant being the person responsible for operating the underground petroleum system and associated dispensing system.

Western Australia licenses the site under dangerous goods law rather than environmental law. WorkSafe WA states that “Unless otherwise exempted, a place must be licensed if dangerous goods are stored or handled at the site in quantities that exceed the manifest quantities”, and that all dangerous goods present, including packages, bulk storage, pipelines and equipment, count towards the calculation. The regime sits under the Dangerous Goods Safety Act 2004 (WA) and its non-explosives storage regulations. See when a dangerous goods site licence is required.

Victoria works on notification rather than a storage licence. The trigger is exceedance of the schedule 2 manifest quantity under the Dangerous Goods (Storage and Handling) Regulations 2022 (Vic). WorkSafe Victoria’s published quantities table sets the manifest quantity for UN Class 3 packing group II goods at 2,500 kilograms or litres, and for class C1 combustible liquids in bulk stored in isolation at 100,000 litres. A retail petrol site sits well above the first of those.

Queensland generally does not require an environmental authority for a retail service station. There is no service station entry in the list of environmentally relevant activities, and Business Queensland describes the relevant activity for chemical storage as environmentally relevant activity (ERA) 8 in schedule 2 of the Environmental Protection Regulation 2019, noting that it is an offence under section 426 of the Environmental Protection Act 1994 to carry out an environmentally relevant activity without one. See activities that need an environmental authority. That activity is triggered by a volume test rather than by the land use, and the tank capacity at a standard retail forecourt sits well below it, which is why an ordinary service station falls outside. Unusually large storage is the case where the volume is worth checking against schedule 2.

Who carries the contamination liability, and when does it attach?

In most Australian jurisdictions the duty to report and manage contamination attaches to the owner or the person in management or control of the land, not only to the party that caused it. A developer who bought a site to knock it down and build townhouses can inherit a reporting duty on day one of ownership. That is the single most important thing to understand before buying a fuel site.

New South Wales

Section 60 of the Contaminated Land Management Act 1997 (NSW) imposes the duty on two groups. Section 60(1) provides that “A person whose activities have contaminated land must notify the EPA in writing in accordance with this section that the land has been so contaminated”. Section 60(2) imposes the same duty on “An owner of land that has been contaminated (whether before or during the owner’s ownership of the land)”. The maximum penalty for each is $2,000,000 plus $240,000 for each day the offence continues in the case of a corporation, and $500,000 plus $120,000 per day for an individual. The full text is on AustLII.

The trigger in section 60(3) is not simply that contamination exists. Notification is required where the contaminant has entered or will foreseeably enter neighbouring land, the atmosphere, groundwater or surface water above a prescribed or specified level and will foreseeably remain above it, or where a guideline specifies a soil level for the current or approved use, the on-site level equals or exceeds it, and a person has been or foreseeably will be exposed to the contaminant.

Section 60(5) provides that “A person is taken to be aware of contamination… if the person ought reasonably to have been aware”, with section 60(9) directing attention to the person’s abilities, experience, qualifications and training, and whether advice could reasonably have been sought. A developer who buys a former service station and does not investigate is not obviously safer than one who does.

On the planning side, section 4.6(1) of the State Environmental Planning Policy (Resilience and Hazards) 2021 provides that a consent authority “must not consent to the carrying out of any development on land unless (a) it has considered whether the land is contaminated, and (b) if the land is contaminated, it is satisfied that the land is suitable in its contaminated state (or will be suitable, after remediation)” for the proposed purpose, and (c) that where remediation is required, it is satisfied the land will be remediated before it is used for that purpose.

Section 4.6(2) then requires the consent authority to consider a preliminary investigation report before determining an application involving a change of use on land in section 4.6(4). That subsection captures land in an investigation area, land on which a use listed in Table 1 to the contaminated land planning guidelines is or is known to have been carried out, and, where the proposal is for residential, educational, recreational, child care or hospital purposes, land where knowledge of whether such a use was carried out is absent or incomplete. A former service station is the archetypal case, and the applicant carries the cost of the investigation.

At the rezoning stage rather than the development application stage, the Department of Planning notes that Ministerial Direction 4.4 on remediation of contaminated land applies under section 9.1 of the Environmental Planning and Assessment Act 1979, on its page on contaminated lands. If you are buying, the planning certificate issued by the council under section 10.7 is one of the first documents to read, because it discloses contamination-related matters affecting the land.

Victoria

Victoria runs three duties in parallel under the Environment Protection Act 2017 (Vic), and none of them requires a licence to bite.

Section 25(1) imposes the general environmental duty: “A person who is engaging in an activity that may give rise to risks of harm to human health or the environment from pollution or waste must minimise those risks, so far as reasonably practicable.” Section 25(2) makes contravention in the course of conducting a business an offence carrying 2,000 penalty units for a natural person and 10,000 for a body corporate, and section 25(3) makes it indictable. The Department of Justice and Community Safety sets the penalty unit at $209.10 for 1 July 2026 to 30 June 2027, putting those maximums at $418,200 and $2,091,000. Section 25 is on AustLII.

Section 39(1) imposes the duty to manage contaminated land: “A person in management or control of contaminated land must minimise risks of harm to human health and the environment from the contaminated land so far as reasonably practicable.” Section 39(2) spells out what that includes, and the last limb matters commercially: provision of adequate information to enable any person reasonably expected to become a person in management or control of the land to comply with the same duty. The outgoing owner therefore has a statutory information duty running towards the incoming one. Section 39 is on AustLII.

Section 40(1) imposes the duty to notify: “A person in management or control of land must notify the Authority if the land has been contaminated by notifiable contamination as soon as practicable after the person becomes aware of, or reasonably should have become aware of, the notifiable contamination.” The penalty is 120 penalty units for a natural person and 600 for a body corporate, which at the 2026 to 2027 unit value works out at $25,092 and $125,460. Section 40 is on AustLII.

What counts as notifiable contamination is set by Part 2.1 of the Environment Protection Regulations 2021 (Vic). Environment Protection Authority Victoria explains that it requires a listed substance above a listed concentration in a listed circumstance. The relevant circumstances for a fuel site include a person being or being likely to be exposed to a contaminant in soil or soil vapour, a contaminant having entered or being likely to enter adjacent land, and contaminated groundwater discharging or being likely to discharge to surface water. See Environment Protection Authority Victoria on notifiable contamination and the duty to notify.

Victoria also has the audit machinery that most often sets the programme. An environmental audit must be conducted by an environmental auditor appointed by the Authority, who must give a copy of the statement and report to the Authority within five business days of completion, and also to the relevant planning and responsible authority. On a suitability of land use audit the auditor must state that the site is suitable for the purposes specified, that it is suitable if the recommendations are met, or that it is not suitable at the time the statement was prepared.

The timing warning comes from the regulator itself: “An audit of a simple site can take a few months to a year. Big or complex sites often take more than a year to audit.” That is a programme item, not a line in a due diligence report. Audit recommendations can also become planning permit conditions, which is how an environmental finding turns into a construction constraint.

On the planning side, land carrying an Environmental Audit Overlay cannot be used for a sensitive use, or developed in association with one, until either a preliminary risk screen assessment states that an audit is not required, or an audit statement concludes the land is suitable, or a certificate or statement of environmental audit was issued under the repealed Environment Protection Act 1970. Ministerial Direction 1 defines potentially contaminated land to include land “used or known to have been used for the storage of chemicals, gas, waste or liquid fuel (except for minor above-ground storage that’s in addition to other land use)”, which captures a service station squarely, and defines sensitive use as residential use, a childcare centre, a kindergarten, a preschool centre or a primary school. See Environment Protection Authority Victoria on assessing potentially contaminated land in land use planning and Planning Victoria’s practice note on potentially contaminated land.

Queensland

Queensland runs a register system, and the threshold that puts land on it is lower than most developers expect.

Schedule 3 of the Environmental Protection Act 1994 (Qld) lists notifiable activities. Item 34 covers “operating a commercial service station”. Item 29 covers petroleum product or oil storage, and captures storing petroleum products or oil “in underground tanks with more than 200L capacity”, with separate and higher above-ground thresholds. The schedule is on AustLII.

A single underground tank over 200 litres is therefore enough to make the land a notifiable activity site, independently of whether a commercial service station was ever operated there.

The duty to notify is administered under Chapter 7 Part 1 Division 2. The department states that where you have a duty to notify and become aware that a schedule 3 notifiable activity has been or is being carried out, you must notify in writing “within 20 business days of the activity commencing or from when you become aware”. Other triggers, including an event causing or threatening serious or material environmental harm and a change in the condition of land already on a register, carry a 24-hour requirement. See the department’s page on contaminated land notifications.

The two registers work as follows, per the department’s page on the registers. Land goes on the Environmental Management Register where a notifiable activity has been or is being carried out, or where the land is contaminated. The department is explicit that listing “is an indication that the land is likely to be contaminated but it does not mean it needs to be cleaned up or is not suitable for its current land use”. Land moves to the Contaminated Land Register “where it is necessary to take action to remediate the land to prevent serious environmental harm and protect human health or other aspects of the environment”.

The disclosure obligation on sale is the one that reaches into the contract. A landowner must, before agreeing to sell or dispose of land on either register, give written notice to the buyer stating that the land is recorded and providing details of any site management plan. The same requirement applies where the land is subject to a show cause notice, an environmental evaluation requiring site investigation, a clean-up notice, or an order under section 458. Where the notice is not given, the buyer “may rescind the agreement by giving the owner written notice before whichever of the following happens first: the completion of the agreement; or possession under the agreement”. A late notice from the owner starts a 21 business day window in which the buyer must rescind or be taken to have waived the right. See buying and selling contaminated land. Since 1 August 2025 the register disclosure also forms part of the seller disclosure statement under the Property Law Act 2023 (Qld).

Western Australia

Western Australia is the jurisdiction where contamination most directly attacks your ability to deal with the land.

Section 11(3) of the Contaminated Sites Act 2003 (WA) requires a person to report to the chief executive officer any site the person “knows is contaminated, within 21 days after the day on which the person first knew that the site was contaminated”, or suspects is contaminated “as soon as it is reasonably practicable to do so”. The penalty is $250,000 with a daily penalty of $50,000. Section 11(4) puts the duty on an owner or occupier, a person who knows or suspects they caused or contributed to the contamination, and an auditor engaged for a report required under the Act.

The chief executive officer then classifies the site. The Department of Water and Environmental Regulation confirms that “We can allocate one of seven classifications to sites”, and the categories are report not substantiated, possibly contaminated with investigation required, contaminated with remediation required, contaminated with restricted use, remediated for restricted use, not contaminated with unrestricted use, and decontaminated. See the department on assessing and classifying contaminated sites.

Only three of those seven appear on the public database: contaminated with remediation required, contaminated with restricted use, and remediated for restricted use. Everything else, including sites awaiting classification, sits on the Reported Sites Register, which is not available online and has to be searched by application. See finding a known contaminated site.

The consequences of classification are registered on title. Section 58(1) requires a memorial to be lodged with the Registrar where land is classified as contaminated with remediation required, contaminated with restricted use, remediated for restricted use, or possibly contaminated with investigation required. Section 58(5) allows the chief executive officer, for land classified as contaminated with remediation required, to specify that an instrument affecting the land is not to be registered without written consent. Section 58(6)(a) provides that where a memorial is registered, the Western Australian Planning Commission “is not to approve under section 135 of the Planning and Development Act 2005 the subdivision of that land, or the amalgamation of that land with any other land”, and section 58(8) provides that a memorial “has effect until it is withdrawn”. Landgate sets out the registry practice on memorials.

For a subdivision-led development in Western Australia, that is close to a project-stopping combination: the memorial blocks the subdivision approval, and it is only withdrawn on reclassification.

South Australia

South Australia’s duty to notify is narrower than the eastern states, because it is groundwater-triggered. Environment Protection Authority South Australia describes section 83A of the Environment Protection Act 1993 (SA) as requiring a site owner, occupier, site contamination auditor or site contamination consultant to notify the Authority in writing as soon as possible after becoming aware of site contamination “that affects or threatens underground water”. See the Authority’s page on site contamination legislation.

Liability under section 103C sits primarily with the original polluter. An owner picks it up where they knew or ought reasonably to have known of the substances, or knew or ought to have been aware that a prescribed potentially contaminating activity had been carried on. Section 103E permits total or partial transfer of liability, but requires full disclosure, an arms-length written agreement, a notice approved by the Authority, and lodgement with the Authority. That is a live mechanism in South Australian site acquisitions and one to raise with your lawyer directly. South Australia also runs a public Site Contamination Index recording notifications, transfers of liability, voluntary assessment and remediation proposals, and audit reports.

Tasmania, the ACT and the Northern Territory

Tasmania. Section 74B of the Environmental Management and Pollution Control Act 1994 (Tas) requires owners or occupiers to promptly inform the Director where they know, reasonably believe, or should reasonably believe that the land is or is likely to be a contaminated site. Part 5A notices come in three forms: investigation, remediation and site management. Environment Protection Authority Tasmania states that an investigation or remediation notice falls on the polluter first, and on an owner only where the site was purchased after 29 November 2007 and, at purchase, the owner knew, suspected or should have reasonably suspected the land was or was likely to be contaminated. There is no standalone public register. A notice is attached to the land title and remains until its conditions are complied with in full or it is revoked. See Environment Protection Authority Tasmania on regulation of contaminated sites and Part 5A notices.

Australian Capital Territory. A register of contaminated sites is kept under the Environment Protection Act 1997 (ACT), but it is narrow. Access Canberra states that “The register does not include all contaminated sites recorded by the EPA. It only records those sites subject to an audit by an Environment Protection Authority (EPA) approved auditor as required under subsection 76(2), 76A(1), 91C(1), 91D(1), 125(2) or 125(3)”. Section 76A(1) covers a notice that an auditor has been engaged, which the Authority says “will typically be under the Planning Act 2023, where a condition of development approval requires that an auditor be engaged to verify the assessment and any required remediation of a site as part of its redevelopment. For example, the redevelopment of former service station sites for residential purposes.” See contaminated sites.

Northern Territory. There is no standalone contaminated land Act. The NT Environment Protection Authority frames the duty on section 12 of the Waste Management and Pollution Control Act 1998 (NT), stating that anyone whose activities have resulted in contamination, anyone whose activities have caused contamination to be spread or enhanced, and an owner of contaminated land would be required to notify as soon as practicable after becoming aware. The regulatory instruments are an environmental audit under section 48 and a pollution abatement notice under section 77, and information about regulated land goes on the public register. The Authority names decommissioning of a fuel station as a pathway through which it becomes aware of contamination. See the Northern Territory Environment Protection Authority on contaminated land duties.

Across all jurisdictions the assessment methodology is broadly common. The National Environment Protection (Assessment of Site Contamination) Measure 1999 was varied on 11 April 2013, with the amendment taking effect in each jurisdiction on 16 May 2013 and repealing and substituting all the original schedules. The National Environment Protection Council notes that it “is given effect by individual legislation and guidelines in each state and territory”. See the Council’s page on assessment of site contamination.

What should due diligence look like on a site with tanks?

Due diligence on a fuel site is a physical investigation, not a document review, and the document review will not tell you what is in the ground.

The usual sequence is a preliminary site investigation based on historical records, aerial photography, title history and register searches, followed by a detailed site investigation with soil bores, groundwater wells and vapour sampling where the preliminary work suggests it. Where the end use is sensitive, an accredited auditor then reviews the consultant’s work and issues a statement.

Register searches do not cover everything. The Western Australian public database shows only three of the seven classifications. The Australian Capital Territory register only records audited sites. Tasmania has no register and works through notices on title. A nil result in a public search is not evidence of a clean site.

The searches are jurisdiction-specific. New South Wales: the section 10.7 planning certificate and the Environment Protection Authority’s record of notices. Queensland: an Environmental Management Register and Contaminated Land Register search and, since 1 August 2025, the seller disclosure statement. Western Australia: the online database, a Reported Sites Register application, and a title search for a memorial. South Australia: the Site Contamination Index and a section 7 property interest search. Victoria: an Environmental Audit Overlay check and any prior audit statement.

Buy time, not certainty. A detailed site investigation, let alone an audit, does not fit inside a standard due diligence period. A longer conditional contract, a licence to enter for investigation before exchange, or an option structure can give you the runway, and the duty consequences of each differ by state.

The lease is where liability was allocated. On an operating site, the lease between the landowner and the fuel operator will usually contain the make-good, remediation and indemnity provisions that decide who pays for what on exit. That document, and any deed varying it, is the highest-value item in the data room.

Ask for the fuel system records. In New South Wales the outgoing person responsible must hand these over within 30 days of a change of responsibility. Elsewhere there is no equivalent obligation, so ask for the tank integrity test history, the groundwater monitoring results and any incident reports as a condition of the contract rather than a courtesy.

What changes when you redevelop a former service station into something else?

Redeveloping a fuel site into residential or another sensitive use is where the contamination rules do the most damage to a feasibility, because the acceptance criteria tighten as the use gets more sensitive.

The highest and best use analysis on these sites often points at residential, because they tend to sit on corners with good exposure in centres that have intensified around them. The planning system then applies its strictest contamination test to that use. New South Wales section 4.6(4)(c) singles out residential, educational, recreational, child care and hospital purposes, and the Australian Capital Territory names redevelopment of former service station sites for residential purposes as its worked example of when an auditor gets engaged.

The remediation approval pathway

In New South Wales, remediation work itself is split into two categories by the Resilience and Hazards policy. Section 4.7(2) provides that a person must not carry out a category 1 remediation work except with consent, and section 4.7(3) provides that category 2 remediation work may be carried out without consent. Section 4.8 lists what makes work category 1, including designated development, work on land carrying coastal protection, conservation, environment protection, floodway or wetland classifications, work requiring consent under another state policy, and work that does not comply with a council policy made under the contaminated land planning guidelines. Section 4.11 defines category 2 as everything else.

Category 2 is not paperwork-free. Section 4.13 requires written notice to the council at least 30 days before the work commences, and section 4.15 requires a notice of completion signed by the person who carried out the work, allowing a site audit statement under Part 4 of the Contaminated Land Management Act 1997 to be given in partial compliance.

How remediation cost lands in the feasibility

The arithmetic is unforgiving, because on a fixed revenue and a fixed margin target every dollar of remediation comes out of the land price.

The figures below are illustrative, not benchmarks. Use your own consultant’s remediation estimate and your own cost plan.

Scenario A, assuming no remediation is required.

Scenario B, same deal with a remediation package. The only changed inputs are $650,000 of tank removal, validation and off-site soil disposal, $180,000 of additional holding and finance cost from a six-month delay, and $90,000 of extra consultant and audit fees. That is $920,000 added.

Scenario C, repricing the land to restore the margin. The only changed input is the land price, reduced to $280,000.

In the model the land falls by the full $920,000 of added cost, and in practice by a little less, because acquisition costs fall with the land price too. That is why vendors and buyers of former fuel sites so often sit a long way apart on price, and why the remediation estimate, and the confidence interval around it, is the number the whole deal turns on. If the estimate could move by $400,000 either way, so could the land price, and that uncertainty is usually handled through the contract rather than the model: a price adjustment mechanism, a remediation cap with a vendor contribution above it, or a longer conditional period to narrow the range before committing. How the residual behaves under those scenarios is a question of margin on cost discipline more than anything else.

Remediation earthworks are also front-loaded, so they hit the cashflow before any revenue arrives, which affects peak debt rather than just total cost.

What drives the cost and programme of building a new service station?

The cost sits mostly below and around the building, not in it, and the programme is usually set by approvals and by the fuel system rather than by the store.

The main cost blocks tend to include the tank farm and its excavation, backfill and anchoring, the product and vapour recovery lines, the leak detection and monitoring equipment, the dispensers and canopy, the forecourt slab with its falls and joint detailing, the drainage separation and interceptor, the electrical and communications infrastructure, underground services relocations, the crossovers and any road works, the signage and pylon, and then the store shell and fitout. On many sites the civil and services package alone exceeds the building.

Because so little of the cost is building area, a quantity surveyor’s elemental cost plan is more useful here than a rate per square metre, and a specialist contractor’s price for the fuel system is usually the only reliable input for that element. The Australian Standards typically in play are AS 4897-2008 for design, installation and operation of underground petroleum storage systems, AS 1940:2017 for storage and handling of flammable and combustible liquids, AS 4976-2008 for removal and disposal of underground petroleum storage tanks, and the AS 2890 series for parking facilities. Which edition applies is set by the instrument that calls it up, and some state guidance still cites older editions, so that is worth confirming rather than assuming.

On programme, the items that most often move the date are the road authority approval for crossovers and turning movements on a classified road, any traffic and acoustic assessment and the objection process that follows, the contamination assessment where the site has industrial history, and the commissioning sequence for the fuel system, which in New South Wales requires an equipment integrity test certified before commissioning under clauses 9 and 13 of the underground petroleum storage systems regulation.

How does the income side work?

A service station is usually developed to be leased and sold as an investment, so the value is driven by the lease and the covenant rather than by the building.

The typical structure is a long initial term with options, annual fixed or indexed reviews, and a market review at option. The building is highly specific to the use, which cuts both ways: it supports a long lease, and it limits alternative use if the tenant leaves. Three provisions carry most of the risk allocation.

Make good and remediation on exit. The lease decides who removes the tanks, who validates the ground, and to what standard. Where the standard is returning the land to its condition at commencement, the baseline environmental report taken at commencement becomes the most valuable document in the file. Where there is no baseline, the argument at exit is unbounded.

Environmental indemnities. These do not override statutory duties. A duty to notify falls on the person the statute names, and a contractual indemnity may give you a claim against someone else but does not remove your own obligation.

Outgoings and monitoring costs. Groundwater monitoring, integrity testing, plan maintenance and any audit obligations are recurring. Who bears them, and whether they are recoverable as outgoings, is a lease drafting question with a direct effect on net income.

Because the exit is usually a sale to an investor, the valuation runs off the passing net income and a capitalisation rate rather than off comparable sales of similar buildings, and the terms that drive that rate are the length of the term, the strength of the covenant, the review structure and the quality of the make-good position. The general mechanics of commercial lease structures apply, with the environmental provisions as the asset-specific overlay.

What does electric vehicle charging do to the asset?

Charging is increasingly treated as part of the same land use rather than a new one, which removes a planning obstacle but does not remove the electrical and site ones.

In Victoria, the clause 73.03 definition already covers charging electric vehicles, so a Victorian service station adding charging is operating within its defined use.

In New South Wales the pathway sits in State Environmental Planning Policy (Transport and Infrastructure) 2021. The Department of Planning explains that sections 2.124D, 2.124E and 2.124F make charging units exempt development where installed in or on car parks, car washing facilities, highway service centres, service stations, existing electricity poles and existing light poles, subject to the general exempt development requirements in section 2.20 and the listed development standards. Sections 2.124A, 2.124B and 2.124C provide the with-consent pathway, and section 2.124C allows units on land with an existing service station, highway service centre or car washing facility across a wide range of zones. See the department’s page on electric vehicle charging units.

The binding constraints are usually electrical rather than planning: available capacity at the connection point, transformer and switchboard space, cable routes across a forecourt already congested with product lines, and the cost and timing of a network upgrade where fast charging is proposed. Those are questions for an electrical engineer and the distribution network operator early, not at the construction certificate stage.

On the demand side, the Australian Government’s New Vehicle Efficiency Standard commenced on 1 January 2025, with its carbon dioxide targets applying to new passenger and light commercial vehicles entering the Australian market from 1 July 2025. See the Department of Infrastructure’s frequently asked questions on the standard.

What that means for a specific site is a judgement about location, traffic composition and dwell time rather than a national trend line. A highway site with a food offer and long dwell times sits differently from a suburban site built around a two-minute refuelling stop.

How does this work in New Zealand?

New Zealand runs a national environmental standard for contaminated soil that captures service stations by name, and a separate hazardous substances regime that is stricter on petrol than most Australian states.

The relevant instrument is the Resource Management (National Environmental Standard for Assessing and Managing Contaminants in Soil to Protect Human Health) Regulations 2011, in force from 1 January 2012. It applies to land where an activity on the Hazardous Activities and Industries List (HAIL) has been, is being, or is more likely than not to have been undertaken. Category F7 on the list is “Service stations including retail or commercial refuelling facilities”, and A17 covers “Storage tanks or drums for fuel, chemicals or liquid waste”. See the Ministry for the Environment on the standard and on the Hazardous Activities and Industries List (HAIL).

The Ministry describes the standard as classifying certain activities as permitted, meaning no resource consent is required if the stated requirements are met, including “removal or replacement of fuel storage systems and associated soil, and associated subsurface soil sampling”, soil sampling, small-scale and temporary soil disturbance no greater than 25 cubic metres per 500 square metres of affected land and no more than two months in duration, and subdividing land or changing land use where a preliminary investigation shows it is highly unlikely the proposed new use will pose a risk to human health.

Where those conditions are not met, the work becomes part of the resource consent application. The consent category for a specific activity should be confirmed against the regulations themselves.

On the hazardous substances side, WorkSafe New Zealand states that “Any service station with petrol or LPG must establish a hazardous substance location where the petrol or LPG is to be situated at the site. All hazardous substance locations must have a location compliance certificate,” and that “Diesel does not need a location compliance certificate.” The threshold is low: WorkSafe gives more than 50 litres of petrol in a single location as an example that triggers the requirement. The certificate is issued for one year for flammable substances, extendable to three years on application, and a new location must be notified at least 30 working days before commissioning. Secondary containment is required for all below-ground stationary tanks holding petrol or diesel, and for above-ground tanks holding more than 1,000 litres of petrol or 10,000 litres of diesel. The certificate requirement is set by regulation 10.34 of the Health and Safety at Work (Hazardous Substances) Regulations 2017 for class 3.1 substances. See WorkSafe on location compliance certificates and on keeping a service station compliant.

The wider planning framework is mid-reform. The Ministry for the Environment states that the Planning Bill and Natural Environment Bill were introduced on 9 December 2025, that Parliament’s Environment Committee completed its scrutiny in July 2026, and that the Government aims to pass the Bills into law in 2026. Neither is enacted at the date of writing, so the timing of any transition is a live question rather than a settled one. See the Ministry on resource management reforms.

What to ask your environmental lawyer

These are the questions that decide the deal on your own facts.

• Which statutory duties would attach to me as owner, occupier or person in management and control from settlement, in this state, and can any of them be transferred by contract?
• Has this land been reported, classified, registered, or made the subject of a notice or order, and how do I search everything that is not on the public database?
• Is there a memorial, notice, annotation or register entry attached to the title, and what does it prevent me doing?
• If contamination is discovered after settlement, what is my notification obligation, on what timeframe, and what is the effect of notifying on my position?
• What contractual protection is available: a price adjustment mechanism, a remediation cap, a vendor contribution, a retention, an environmental indemnity, or a transfer of liability where the state allows one, and how enforceable is each in practice?
• What is the practical effect of an indemnity where a statutory duty falls on me personally or on my company, and what is the position on executive or director liability if the entity fails to comply?
• On an operating site, what does the existing lease say about make good, remediation standard, baseline condition and indemnities, and what does it not say?
• How long do I realistically need for site control, and which structure gives it to me without triggering duty or tax consequences I have not planned for?

What to ask your contaminated land consultant or site auditor

• Based on the site history, what is the realistic range of remediation cost, and what would move it to the top of that range?
• What is the difference in acceptance criteria and cost between the current use, a commercial redevelopment and a residential redevelopment on this site?
• Is groundwater affected, does it appear to be moving off site, and does the plume extend under neighbouring land?
• How much of the investigation can be done before settlement, what access do I need, and what will it cost?
• What is the likely audit or validation timeframe here, and what would extend it?
• What is the disposal classification of the soil likely to be, where does it go, and what is the current cost of that disposal route?
• What residual management obligations would survive remediation, such as a site management plan, ongoing monitoring or a restriction on use?

What to ask your town planner and quantity surveyor

For the planner:

• Is a service station permissible in this zone under the applicable local instrument, and with consent or without?
• Which separation distances or amenity thresholds apply here, and how close is the nearest sensitive use?
• What does the road authority require for access, and is concurrence needed on a classified road?
• Is contamination assessment required at the development application stage, the rezoning stage, or both?
• If I later add charging, food, or a car wash, does that sit inside the defined use or trigger a new application?

For the quantity surveyor:

• What does the elemental cost plan look like split between the civil and services package, the fuel system, the forecourt and canopy, and the store?
• Which elements are best priced by a specialist contractor rather than estimated?
• Should the remediation allowance be treated as a contingency, a provisional sum, or an excluded item priced separately?
• How much of the spend falls before any revenue arrives?