How to Choose a Builder: Australian Developer Due Diligence Guide

Choosing a builder is one of the few decisions a property developer makes that can quietly absorb the entire profit margin of a project. Most of the Australian content ranking for “how to choose a builder” is written for first-home buyers picking from a glossy showroom of project-home brochures, and treats the question as a matter of finish quality and rapport. For a developer the question is materially different. It is a due diligence exercise on a counterparty about to sit between the developer’s funding stack, the certifier, the subcontractor base and the end purchaser, with the ability to consume cash for twelve to thirty months and the contractual capacity to claim variations, extensions of time and prolongation costs along the way.

This guide approaches the question the way a developer should. It works through the regulatory licence classes that determine which builders can lawfully take on a given project type across all eight states and territories, the financial position checks that may reveal a builder heading into trouble before they sign the contract, the past-project verification process that exposes the gap between a builder’s marketing and their delivery, the contractual posture that protects the developer’s downside, and the phoenix-risk markers that may be visible in public records months before a collapse. Australian Bureau of Statistics figures show that 3,217 construction firms entered external administration in 2024 alone, a 26% lift on 2023 and the sector remains the single largest source of business insolvency in the country per ASIC insolvency data. For a developer, the cost of a mid-build builder collapse may exceed the entire forecast project margin, so the due diligence process matters more than the marketing brochure ever will.

Why “choosing a builder” is a different question for developers

A homeowner choosing a builder is typically asking which builder will deliver the home they want for the price they have budgeted. Cost, design fit and rapport carry the most weight in that decision. The Australian search engine results for the phrase “how to choose a builder” are dominated by that framing, including consumer-protection guidance from the NSW step-by-step guide to choosing the right tradesperson or builder and from Consumer Affairs Victoria’s choosing a building team guidance. Both are useful starting points, particularly on the legal minimums around licences and contracts. Neither addresses the question a developer is actually asking.

A developer choosing a builder is asking whether this counterparty has the regulatory authority, financial depth, technical experience, contractual posture and behavioural track record to deliver a specific project type, at a contracted price, within a contracted timeframe, while sitting between the developer’s debt facility, its presale contracts, its certifier and its subcontractor chain. The framing is closer to lender due diligence than to consumer purchase. The decision sits inside a feasibility model and changes the developer’s modelled construction cost, variation contingency, programme contingency, and downside risk all at the same time. It is also rarely a single-builder decision; serious developers may run a tender across three to five qualified builders and use the differences between their submissions to test the underlying numbers.

The practical consequence is that the developer’s process needs to do four things the homeowner process does not need to do: verify that the builder is licensed for the specific project class (not just licensed in general), verify that the builder’s financial position can absorb the project size without breaching regulatory thresholds, verify that the builder’s prior project history matches the project type at hand (not just looks similar), and verify that the builder is unlikely to be insolvent in twelve months. Each of these uses different primary sources, and each is built into the contract structure as a separate risk mitigation.

Licence class matching: the regulatory floor

Every Australian state and territory requires builders performing residential or commercial building work above a defined value threshold to hold a licence or registration issued by the state regulator. The detail varies. The fundamental issue for a developer is that licences are class-specific. A builder licensed to construct a single-storey detached dwelling may not be licensed to construct a three-storey walk-up apartment, and a builder licensed for three-storey work may not be licensed for an eight-storey high-rise. Confirming the licence is not enough. Confirming that the licence class authorises the specific project type is what matters.

New South Wales

In New South Wales (NSW), residential building work valued over $5,000 generally requires the contractor to hold a contractor licence issued by NSW Fair Trading (now sitting within the NSW Building Commission). The Verify NSW register lets a developer check that a builder’s licence is current and that any disciplinary actions sit against the licence. The NSW categories and classes of building and trade work page sets out the full schedule.

On top of the Home Building Act 1989 (HBA) contractor licence, NSW imposes a separate registration regime for building practitioners working on regulated buildings under the Design and Building Practitioners Act 2020 (DBPA). The DBPA currently regulates Class 2 buildings (residential apartment buildings) and certain Class 3 and Class 9c buildings, including mixed-use buildings with a Class 2 part. A 2024 amendment is expanding the DBPA framework progressively. The DBPA categories are set out in Schedule 1 of the Design and Building Practitioners Regulation 2021 per the Bannermans Lawyers DBPA regulation update.

The DBPA building practitioner classes are typically understood as:

• Building Practitioner (Low Rise): work on a building with a maximum gross floor area of 2,000 square metres, but not including Type A or Type B construction.
• Building Practitioner (Medium Rise): Class 2 buildings with a maximum of three storeys, or four storeys if the ground level or first storey is a carpark (Class 7a).
• Building Practitioner (General): all Class 2 buildings without storey or area limit.

For a developer of an apartment building in NSW, the practical test is therefore two-layered: the builder must hold a current Home Building Act 1989 (HBA) contractor licence sufficient for the contract value, and a Design and Building Practitioners Act 2020 (DBPA) building practitioner registration in the class that matches the building. A builder with a Medium Rise registration cannot lawfully take on the developer’s eight-storey Class 2 building. The Building Practitioner Register on the NSW Government Building Commission website is the primary source for both checks.

Beyond the licence and registration, NSW imposes specific compliance declaration obligations under the DBPA: registered building practitioners must lodge regulated designs and a compliance declaration before construction commences, must lodge variations to regulated designs as they occur, and must lodge a final building work declaration on practical completion. A developer engaging a builder for Class 2 work should expect the builder to be operationally familiar with the declaration regime. The Norton Rose Fulbright DBPA obligations summary sets out the operational reality. Where the proposed builder cannot describe how they manage the declaration workflow, that is a finding.

Victoria

In Victoria, building practitioner registration was historically administered by the Victorian Building Authority (VBA). On 1 October 2024 the VBA was replaced by the Building and Plumbing Commission (BPC), which now sits within Consumer Affairs Victoria’s regulatory umbrella. The registration framework continues. The Victorian builder registration classes most relevant to a property developer typically fall under either Domestic Builder or Commercial Builder per VBA’s building practitioner registration page.

Domestic Builder (Unlimited) covers all components of domestic building work on Class 1 and Class 10 buildings (free-standing houses, townhouses, duplexes, and ancillary structures). Domestic Builder (Limited) classes cover specific trades or trade-adjacent work (carpentry, glazing, blockwork) and are typically too narrow to take on a complete residential development project.

For multi-residential apartment buildings (Class 2) and commercial work, the Commercial Builder classes apply:

• Commercial Builder (Unlimited), commonly written as CB-U, authorises work on commercial buildings without height or class restriction, including high-rise apartments and complex mixed-use projects.
• Commercial Builder (Limited – Low Rise), commonly written as CB-L-L, authorises commercial building work on buildings up to 15 metres in height.
• Commercial Builder (Limited – Medium Rise), commonly written as CB-L-M, authorises commercial building work up to 25 metres in height.
• Commercial Builder (Limited – Fit-out Structural and Non-Structural) classes authorise specific fit-out work only.

A developer of a four-storey Class 2 apartment building in Victoria therefore needs a builder holding at least Commercial Builder (Limited – Low Rise), and arguably needs CB-L-M for buildings approaching 25 metres. A developer of a six-storey or higher apartment building needs Commercial Builder (Unlimited). The Building and Plumbing Commission (BPC) practitioner register is the primary source. A developer should also check that the company contracting (the entity signing the building contract) holds a contractor registration, in addition to the practitioner registration held by the individual nominee.

Queensland

Queensland uses the most explicit licence-class system of any Australian jurisdiction. The Queensland Building and Construction Commission (QBCC) issues builder licences in three principal classes (Low Rise, Medium Rise and Open) that map directly to building scale per the QBCC available licences page:

• Builder (Low Rise) authorises building work on Class 1 and Class 10 buildings, plus Class 2 to Class 9 buildings with a gross floor area not exceeding 2,000 square metres and not in Type A or Type B construction. Typical scope is detached housing, townhouses, small commercial.
• Builder (Medium Rise) authorises building work on Class 2 to Class 9 buildings up to three storeys, but not Type A construction. Typical scope is medium-density apartments, walk-up unit blocks, mid-size commercial.
• Builder (Open) authorises all classes of building work without restriction. This is the only QBCC builder licence class that authorises high-rise residential, large hospitals, and complex multi-use development.

The class-matching exercise is therefore straightforward in Queensland. A developer of a six-storey apartment building in South Brisbane needs to confirm the builder holds either a current Builder (Medium Rise) licence (if the building is no more than three storeys including the carpark) or a Builder (Open) licence. Anything narrower is not legally sufficient. The QBCC online licensee search is the primary check.

South Australia

In South Australia, Consumer and Business Services (CBS) administers building work contractor licences. The licence categories most relevant for property development work are typically:

• Building work contractor (general), authorising building work on Class 1 and Class 10 residential buildings.
• Building work contractor (restricted), authorising specific trades or building work subsets such as carpentry, tiling or commercial classes only.
• Commercial building work contractor (Class 2 to 9), authorising commercial building work on multi-residential and commercial buildings.

The Consumer and Business Services work and business advice page hosts the licence schedule and the public licensee search. South Australia’s licence categories are less granular than Queensland’s in respect of building height, so a developer must check experience and capability separately from the licence class.

Western Australia

In Western Australia, the Building Services Board administers registration under the Building Services (Registration) Act 2011. Registration is required for any builder providing building services valued above $20,000 where a building permit is required, per Master Builders WA’s getting your builder’s licence overview. The principal categories for property development are:

• Registered Building Contractor (Unrestricted), authorising all classes of building work.
• Registered Building Contractor (Restricted), authorising defined subsets of building work (for example residential only, or specific building classes).
• Registered Building Practitioner, the individual nominee held by a contractor.

A developer in Western Australia should expect a builder for a multi-residential or mixed-use project to hold a Building Contractor (Unrestricted) registration. Where the registration is Restricted, a developer should confirm that the restriction does not exclude the building class proposed.

Tasmania

Tasmania splits builder licences administered by Consumer, Building and Occupational Services (CBOS) into a class structure that includes General Construction Builder, Fire Protection Services Builder and Demolisher. Within General Construction Builder, the sub-classes (Domestic, Low Rise, Medium Rise and Open) align broadly with the Queensland approach per the Tasmania CBOS builder licence page. For a developer of a multi-storey project in Hobart or Launceston, the Open sub-class is generally the only sub-class authorising work on a building beyond three storeys.

Australian Capital Territory

The Australian Capital Territory (ACT) administers builder licensing through Access Canberra. Licences are issued in five classes (A, B, C, D and Owner-Builder) which map broadly to building height and complexity. Class A licences authorise all classes of building work without restriction. Class B authorises work on buildings up to three storeys. Classes C and D progressively narrow the scope to smaller and simpler work. For a developer of a multi-residential building, a Class A or Class B licence is typically required depending on the building height. Verification is via the Access Canberra public register.

Northern Territory

In the Northern Territory (NT), the Building Practitioners Board administers builder registration under the Building Act 1993 (NT). The principal builder registration categories are Building Contractor (Residential) and Building Contractor (Unrestricted), with Restricted sub-categories for specific building classes per the NT Building Practitioners Board practitioners page. The NT register is searchable and a developer should confirm the proposed builder’s registration class authorises the specific building class proposed.

Why class matching matters before contract execution

A common pattern in builder-failure cases is a builder taking on work outside their licence class on the basis that they “could get the licence upgraded before completion” or that the builder’s senior staff hold the relevant registrations individually. The legal position is that the contracting entity must hold the appropriate licence at the time the contract is entered into. Where the entity does not, the contract is generally unenforceable as to the recovery of contract payments by the builder, and any insurance cover may be voided. A developer who has paid against a contract with an under-licensed builder may also struggle to claim against the relevant home warranty or compensation scheme. This is one of the easiest checks to perform and one of the least negotiable.

Financial position due diligence: what to verify and where

Financial due diligence on a proposed builder is the area where most developers under-invest. The default behaviour is to assume that the regulator has done the work. This is partly true. QBCC in particular runs the most stringent financial requirements regime of any Australian builder regulator and requires builders to demonstrate net tangible assets sufficient for their forecast revenue. Other states are lighter. In all jurisdictions, the regulator’s check is a point-in-time minimum, not a guarantee of solvency over the build period. The developer’s job is to layer on independent checks that may reveal stress before it becomes failure.

The QBCC Minimum Financial Requirements: the most instructive framework

The Queensland Building and Construction Commission’s Minimum Financial Requirements (MFR) regime is the most explicit financial-strength framework in Australian builder regulation. Builders are placed into one of nine financial categories based on their net tangible assets (NTA) and maximum annual revenue per the QBCC net tangible assets page:

• Self-Certifying 1 (SC1) authorises annual revenue up to $200,000.
• Self-Certifying 2 (SC2) authorises annual revenue up to $800,000.
• Categories 1 through 7 cover progressively higher revenue tiers and require a Minimum Financial Requirements (MFR) Report prepared by a qualified accountant.

The QBCC categorisation is publicly searchable for any QBCC-licensed builder. For a developer in Queensland, the practical question is whether the proposed builder’s QBCC maximum revenue category leaves headroom for the developer’s project plus the builder’s existing pipeline. A builder operating at or above their maximum revenue is a flag, both for likely QBCC scrutiny and for the possibility that the developer’s project will compete for working capital with the builder’s other commitments. The same framework can be applied analytically in non-Queensland jurisdictions, even though regulatory disclosure is lighter.

The Queensland framework also requires builders to maintain a current ratio (current assets divided by current liabilities) of at least 1:1, and to report changes in financial position that materially alter the licensee’s category. A builder that has recently dropped categories is a clear signal of financial deterioration. Where a developer is engaging a Queensland-licensed builder, the maximum revenue history is available through the QBCC licensee search and is worth pulling.

Australian Securities and Investments Commission searches

For any builder contracted as a company (which is most builders engaged for development work), the Australian Securities and Investments Commission (ASIC) registers are the primary source for company position and history. The ASIC online services search page provides direct register access. The relevant checks include:

• Company current extract: confirms the company exists, is registered, identifies current directors and shareholders, and lists registered office details.
• Company historical extract: shows changes to directors, company name, and registered office over time. Frequent director changes, recent name changes, or unexplained turnover at director level are typically worth investigating.
• ASIC published notices: lists insolvency-related notices for any company that has entered external administration. The ASIC published notices website covers notices from 1 July 2012 forward.
• Personal Properties Securities Register (PPSR) check on the company: identifies registered security interests over the company’s assets, which may signal lender stress or vendor finance arrangements.

A developer should run the company extract and historical extract on the contracting entity, on any guarantor entity offered, and on the directors as individuals. The historical extract on directors typically reveals prior directorships of failed companies, which is the strongest single signal of phoenix risk.

Director Identification Numbers and phoenix-risk profiling

The Director Identification Number (DIN) regime, administered by the Australian Business Registry Services (ABRS), was introduced in 2021 specifically to address phoenix activity in the construction industry. Every director of a Corporations Act 2001 company in Australia is required to hold a Director Identification Number (DIN), a 15-digit unique identifier that follows the individual for life per the ABRS about director ID page.

The Director Identification Number (DIN) regime addresses what is generally understood as the dominant pattern in construction insolvency: a director liquidates a building company carrying defect claims, unpaid subcontractor debts and warranty exposures, then reincorporates under a new corporate name and continues trading. The Director Identification Number (DIN) makes the link between past and current directorships traceable to ASIC and to any party performing due diligence on the new entity. As of May 2026, ASIC’s published guidance is that 100% of new company director appointments require a Director Identification Number (DIN) prior to appointment, and historical directors were required to obtain a DIN by November 2022 (or for Corporations (Aboriginal and Torres Strait Islander) Act 2006 directors by November 2023).

For a developer, the practical implication is that any director offered as guarantor under a building contract can be traced back through historical directorships. A director whose past five directorships have all entered external administration is a phoenix risk. The Australian Securities and Investments Commission’s (ASIC) registers, combined with the published notices website, allow this pattern to be reconstructed in under an hour for most directors.

Federal Court and state court judgement searches

Insolvency does not always announce itself through ASIC. A more common early signal is litigation. Subcontractors unable to recover payment will typically issue creditors statutory demands, and where these are unpaid, present winding-up applications in the Federal Court of Australia or the Supreme Court of the relevant state. These actions are searchable in advance of any insolvency event.

The Federal Court Federal Law Search, accessible via the Commonwealth Courts Portal, provides public search across cases filed in the Federal Court (back to 1984) and the Federal Circuit and Family Court of Australia. A search on the contracting entity’s name typically reveals winding-up applications, security-of-payment disputes, and contractual claims against the builder. Each state Supreme Court runs an equivalent register; the New South Wales Supreme Court’s Online Registry and the Victorian Supreme Court’s RedCrest are the most widely used.

A pattern of statutory demands or winding-up applications, even where dismissed or settled, is a clear stress signal. A developer’s contract due diligence should include the federal and state court searches alongside the ASIC company extract. The cost is low (typically under $50) and the read-through to risk is direct.

Australian Business Number, business name and Australian Taxation Office endorsements

Beyond ASIC, the Australian Business Register’s ABN Lookup confirms the contracting entity holds a current Australian Business Number (ABN) and may show Goods and Services Tax (GST) registration status. A builder whose Goods and Services Tax (GST) registration has lapsed, or whose Australian Business Number (ABN) was issued very recently for a builder claiming long operating history, both warrant investigation.

Where the Australian Taxation Office (ATO) is a creditor, the indications are not always public. The ATO’s reporting of disclosable tax debt regime was extended in 2019 to allow the ATO to disclose certain unpaid tax debts above $100,000 to credit reporting bureaux. A commercial credit report on the builder from Equifax or Illion will typically pick up ATO disclosures alongside other credit defaults. Where the builder is unwilling to share a current commercial credit report, that itself is worth weight.

Home warranty insurance eligibility as a financial signal

In jurisdictions with mandatory home warranty insurance for residential building work (notably NSW under the Home Building Compensation Fund and Victoria under the Domestic Building Insurance scheme), the insurer performs an independent financial assessment of the builder before issuing eligibility. The Home Building Compensation Fund (HBCF), administered in NSW by icare, issues a Certificate of Eligibility that sets out the maximum work value the builder may take on per the icare HBCF builders page.

A builder whose Home Building Compensation Fund (HBCF) eligibility is restricted, or whose Certificate of Eligibility was recently capped, has effectively been graded by the insurer. The insurer’s assessment is independent of the developer’s, uses different criteria, and may pick up financial signals not yet public. A developer should ask to see the current Certificate of Eligibility and the work-on-hand register that supports it before contract execution. The same logic applies to Victorian Managed Insurance Authority (VMIA) Domestic Building Insurance eligibility for Victorian residential work.

Past project verification: drive-bys, subbies and prior clients

Marketing photos prove only that a builder owns a camera. Real past-project verification means physically visiting completed buildings, speaking to prior developer clients (not homeowners), and where possible to subcontractors. The exercise is unglamorous and is the single highest-impact piece of due diligence available to a developer.

The drive-by

A developer should select two or three projects the builder has completed in the last three years that are closest in type, scale and complexity to the proposed project, and physically visit them. The visit answers questions that no documentation can. Does the external finish hold up at three years? Are the brick courses straight at the corners? Is the rendering cracked at the parapet? Is the carpark paving spalling? Is the building generally well-maintained or already showing signs of poor original specification? Have residents added unapproved alterations because the original layout did not work?

The drive-by also reveals what was actually built. A builder’s website may claim 85 dwellings completed in the past three years, but a list of project addresses, cross-checked against the Land Registry or council property data, may show that only 40 dwellings were completed by that entity. The remainder were completed under a different corporate name, or were claimed work by a related party. The Land Registry information system in each state (such as SIX Maps in NSW or LANDATA in Victoria) and council property data are public sources sufficient to verify what was built and by whom.

Conversations with prior developer clients

The reference call from a homeowner who built a house with the builder is helpful but not weight-bearing. The reference call from a prior developer client is the one that matters. The questions to ask are:

• Did the builder hold their contract sum within reason, and where did variations land relative to the contract?
• Did the builder hold programme, and what was the duration of extension-of-time claims?
• How did the builder behave when a dispute arose? Did they cooperate, or did they threaten to suspend work or claim prolongation?
• Were the subcontractors paid on time throughout the build?
• Did the builder cooperate at practical completion, defects liability period and final certification?
• Would the developer use the builder again, and if not, why not?

The honest answers to those six questions are typically more useful than any contract document. The conversation should be sought with a developer who has completed a project with the builder in the last two years, not five years ago. Older references are useful for early credentials but may not reflect current capability.

Conversations with subcontractors

Subcontractors are the second-most-reliable source of information on a builder’s current financial position. A subcontractor that has not been paid for sixty days or more, or who reports that the builder is now offering 90-day terms where they previously paid in 30 days, is reporting a builder with a working capital problem. A developer cannot easily commission this enquiry, but where the developer has trusted relationships with a quantity surveyor, project manager or structural engineer who has worked with the proposed builder recently, the question of how the builder is paying subbies is the right one to ask.

The Subbies United industry coverage and several state-based subcontractor support groups also publish builder collapse alerts and unpaid-claims patterns. They are not formal credit references, but they are an additional read on the current behavioural picture.

Verifying the licence holder was actually the builder

A subtle but important verification step is confirming that the licensed contractor on the past projects was the same entity proposed for the developer’s project. Building groups commonly trade through multiple related entities, and the company quoting on the developer’s project may be a newer or differently structured entity from the one that delivered the prior work. The Australian Securities and Investments Commission (ASIC) extract on each entity, cross-checked with the Personal Properties Securities Register (PPSR) and the relevant state regulator’s licensee history, allows the developer to confirm that the proposed contracting entity has the same operating history, the same directors, and the same insurance position as the entity that delivered the past projects. Where the proposed entity is a newer Special Purpose Vehicle (SPV) without that history, the developer should require parent-company or director guarantees explicitly.

Contract posture and procurement structure

The choice of contract is part of choosing the builder. A builder who insists on their own contract template, who refuses to entertain amendments to the Annexure to the Australian Standard form, or who pushes back hard on liquidated damages or retention, is signalling a posture the developer will live with for the next eighteen months. The negotiation pattern at contract stage is typically the negotiation pattern through the build.

The standard-form Australian construction contracts

For Australian developer-builder contracts, the most-used contract forms are typically:

• AS 2124-1992 (General Conditions of Contract): the older general construction standard form, still used on some commercial work, structured as a construct-only lump-sum contract.
• AS 4000-1997 (General Conditions of Contract): the most-used construct-only standard form, replacing AS 2124 in much current usage per the Mastt overview of AS 4000.
• AS 4902-2000 (General Conditions of Contract for Design and Construct): the dominant Design and Construct (D&C) form, used where the builder is responsible for design as well as construction. The contract structure and the developer’s negotiation points are covered in more depth in the design and construct contracts Australian developer’s guide.
• Master Builders Australia (MBA) suite of contracts: industry-association contracts, generally builder-friendly in the standard form.
• Housing Industry Association (HIA) contracts: industry-association contracts predominantly used in residential work, also generally builder-friendly in the standard form.
• Guaranteed Maximum Price (GMP) contracts: typically bespoke contracts, often used on larger or open-book projects where the builder commits to a price ceiling. The guaranteed maximum price contracts Australian developer guide covers the structure in detail.

A developer should typically prefer the Australian Standard forms over the industry-association forms. The standard forms are independently drafted, are familiar to lawyers across the country, and place the principal-driven amendments in the Annexure Part B, which makes the actual risk allocation visible at contract stage. Industry-association forms tend to embed builder-favourable positions inside the general conditions, which are not always negotiated.

Security and retention

In any developer contract, security and retention are the developer’s principal protection against builder non-performance. The typical structure is 5% of the contract sum, commonly split 50% bank guarantee and 50% retention moneys held from progress payments. Where the builder refuses to provide bank guarantees, that is a signal: bank guarantees require the builder’s bank to assess the builder’s financial position and commit to pay on demand. A builder unable to obtain bank guarantees may not have the working capital position to deliver the contract.

The retention regime should be structured to release at practical completion (with a residual held through the defects liability period) and to allow the developer to draw against retention to remediate defects that the builder fails to fix within the defects liability notice period. Where the builder pushes back hard on retention, the developer should question why.

Liquidated damages

Liquidated damages clauses set a daily or weekly rate that the builder must pay for delay beyond the contracted date for practical completion. The rate should be a genuine pre-estimate of the developer’s loss, which typically includes holding costs, additional interest on the construction facility, presale settlement timing risk, and project management overheads. A builder who refuses to negotiate any liquidated damages is signalling either that they will not commit to programme or that they expect to claim extensions of time more often than the developer expects.

For most developer projects, a liquidated damages rate in the range of 0.1% to 0.2% of the contract sum per week, capped at 5% to 10% of the contract sum in aggregate, is generally negotiable. Numerical claims here are highly project-specific and the actual rate should be tested against the developer’s modelled holding costs in feasibility.

Variation regime and extensions of time

The variation regime is where most developer-builder disputes arise. The contract should require all variations to be priced, agreed in writing and signed by both parties before work proceeds. The contract should require the builder to give notice of any claim for extension of time within a defined period (commonly 14 to 28 days) and should make notice a condition precedent to the entitlement. A builder who pushes for open-ended variation entitlements or for retrospective extension of time claims is requesting the contractual flexibility to absorb the developer’s contingency over the course of the build.

Construction cost sensitivity is one of the highest-impact variables in a development feasibility model. Modelling the impact of variation contingency, extension-of-time claims and liquidated damages under the proposed contract is a natural application of sensitivity analysis, and is one of the practical tests of whether the proposed contract posture leaves the project bankable.

Where Feasly fits

For developers comparing builder tenders, Feasly’s feasibility modelling allows the headline contract sum, the modelled variation contingency, the programme assumption and the liquidated damages exposure to be tested side-by-side under different builder scenarios. A builder offering a $300,000 lower contract sum but with a recent history of variation-heavy delivery may not be the lowest-cost option once the variation contingency is modelled to reflect their actual track record.

Phoenix-risk markers in public records

A developer can typically pick up phoenix activity months before a builder collapse if they know what to look for. The pattern is well-documented in Australian Securities and Investments Commission (ASIC) data and in academic studies of construction insolvency, and shows up in public records consistently.

The markers a developer should watch for in due diligence:

• Recent change of company name (visible in the ASIC historical extract).
• Recent change of registered office to a residential address or a virtual office.
• Recent transfer of significant assets to a related party (visible in the Personal Properties Securities Register or in subsequent ASIC filings).
• Director resignations followed by appointment of a new director without operational history.
• Withdrawal of historical company financial reports.
• Director’s prior directorships of liquidated companies, traceable via the Director Identification Number (DIN) regime.
• Pattern of statutory demands or winding-up applications, dismissed or settled.
• Decline in Queensland Building and Construction Commission (QBCC) maximum revenue category (Queensland builders only).
• Reduction in Home Building Compensation Fund (HBCF) eligibility cap (NSW residential builders).
• Subcontractor reports of extended payment terms or partial payments.
• ATO disclosure of tax debt above $100,000.

The combination of any three of these markers is generally understood as sufficient to warrant either a request for additional security (typically a parent-company guarantee or director guarantee with documented director personal balance sheet) or a decision to proceed with a different builder. A single marker may be explainable. Three markers is a pattern.

Quick state and territory summary

For developers operating across multiple jurisdictions, a summary of where to perform the licence check for each state and territory:

Putting it together: a minimum builder due diligence checklist

For most developer projects, the minimum due diligence on a proposed builder before contract execution may typically include:

1. Confirmation of current licence or registration in the class authorising the proposed project type, verified directly against the regulator’s public register.
2. Confirmation of current Home Building Compensation Fund (HBCF) or Domestic Building Insurance (DBI) eligibility (residential work), with copy of the Certificate of Eligibility and the work-on-hand register.
3. Current Australian Securities and Investments Commission (ASIC) company extract on the contracting entity and on each director.
4. ASIC historical extract on the contracting entity and on each director (looking specifically for prior directorships of liquidated entities).
5. Director Identification Number (DIN) confirmation for each director.
6. Federal Court and state court judgement search on the contracting entity for winding-up applications and security-of-payment disputes.
7. Personal Properties Securities Register (PPSR) check on the contracting entity.
8. Australian Business Number (ABN) confirmation via ABN Lookup, with Goods and Services Tax (GST) registration status.
9. Recent commercial credit report from Equifax or Illion (request from the builder).
10. Physical inspection of two to three recent completed projects of comparable type, scale and complexity.
11. Reference calls with two or more recent developer clients (not homeowner clients).
12. Confirmation that the contracting entity proposed is the same entity that delivered the past projects, with director continuity verified.
13. Review of proposed contract form, security regime, retention, liquidated damages and variation regime against the project’s modelled risk profile.

The exercise typically takes between two and four weeks for a proper build-out, runs to a few thousand dollars in search fees and legal time, and is the cheapest insurance available against the dominant downside risk in the project. Where the proposed builder resists any element of the exercise, the resistance itself is data.

The reframe a developer should hold in mind throughout: the question is not “is this a good builder”, in the abstract. The question is “is this builder, at this point in their cycle, with this licence class, this financial position, this insurance position, this track record and this contractual posture, the right counterparty to take on this specific project alongside our specific funding stack and our specific risk tolerance”. The answer is rarely binary, but the structured due diligence process is what allows it to be answered with confidence rather than hope.