Home Building Act Disputes Lawyers

Residential building disputes can arise at any stage of a construction or renovation project. Disputes commonly involve defective workmanship, delays, variations, incomplete works, payment disputes, statutory warranty claims, non-compliance with the building contract, or failures to comply with the requirements of the Home Building Act 1989 (NSW) (‘HB Act’).

Building disputes are often financially and emotionally stressful. Delays in obtaining advice can also significantly affect a party’s legal position, particularly where statutory warranty periods or limitation periods are approaching expiry.

Citilawyers acts for homeowners, owner-builders, builders, developers, subcontractors, and owners corporations in home building disputes across Sydney and New South Wales. We assist clients in resolving disputes through negotiation, NSW Fair Trading, NSW Civil and Administrative Tribunal (NCAT) proceedings, and Court litigation where necessary.

If you are involved in a residential building dispute, contact our team today to discuss your options.

What is a Home Building Act Dispute?

A HB Act dispute generally arises where a party alleges that residential building work:

• is defective, incomplete, or delayed;
• fails to comply with the building contract; check the building contract disputes lawyers page.
• breaches statutory warranties under the HB Act;
• involves non-payment or disputed variations;
• does not comply with approved plans or applicable standards; or
• has caused financial loss or property damage.

Common disputes include:

• defective building work claims;
• waterproofing and structural defects;
• disputes over variations and progress payments;
• incomplete or abandoned works;
• delay claims;
• disputes concerning owner-builder works;
• contractual disputes between builders and homeowners;
• defective common property in strata buildings; and
• claims involving non-compliance with the National Construction Code.

Statutory Warranties Under the Home Building Act

Section 18B of the HB Act implies mandatory warranties into every contract for residential building work in New South Wales. These warranties apply automatically and cannot be excluded by contract. The warranties include obligations that the work will:

• be carried out with due care and skill and in accordance with the contractual plans and specifications;
• use suitable and, unless otherwise agreed, new materials;
• comply with all applicable laws, including the NCC and other building regulations;
• be completed with due diligence and within the contractual or reasonable time;
• result in a dwelling reasonably fit for occupation; and
• be reasonably fit for any specified purpose made known by the owner who relied upon the contractor’s skill and judgment.

Importantly, subsection (2) extends these statutory warranties beyond owners and principal contractors to subcontracting arrangements, allowing warranties to operate throughout the contractual chain of residential building work.

Generally:

• major defects have a 6-year statutory warranty period; and
• non-major defects have a 2-year statutory warranty period.

Strict limitation periods apply. Delay in obtaining legal advice may affect your ability to bring a claim.

Owner Builders and Home Building Act Disputes

Owner-builders are also subject to obligations under the HB Act. McIntosh v Lennon [2024] NSWSC 169 confirmed that individuals who undertake owner-builder work without obtaining the required owner-builder permit under the HB Act remain subject to the statutory warranties in section 18B of the Act.

The Supreme Court held that a strict literal interpretation of the definition of “owner-builder” would undermine the consumer protection purpose of the legislation by allowing individuals who unlawfully failed to obtain a permit to avoid liability for defective residential building work.

Applying the principles in Taylor v The Owners – Strata Plan No 11564 [2014] HCA 9, the Court concluded that additional words should be read into the statutory definition so that it included persons who were required to obtain an owner-builder permit but failed to do so.

Disputes involving owner-builders commonly arise in relation to:

• defective workmanship;
• incomplete works;
• disclosure obligations on sale of property;
• non-compliance with statutory warranties; and
• insurance and approval issues.

We advise both owner-builders and purchasers on their rights, obligations, risk exposure, and dispute resolution options arising from owner-builder residential building work.

The Home Building Compensation Fund (HBCF)

Where a residential building contract is for work over $20,000, the builder must obtain HBCF insurance under section 92 of the HB Act and provide the homeowner with a certificate of insurance before commencing work or accepting any deposit.

HBCF insurance protects the homeowner where the builder:

• Has died, become insolvent, or disappeared (the “fire, flood, or famine” requirement)
• Has had their licence suspended or cancelled
• Has been the subject of a court or tribunal order requiring rectification that they have not complied with

Importantly, HBCF is a last-resort insurance, it only responds where the builder cannot. Claims must be made within strict timeframes:

• For non-completion: 12 months from the time the homeowner became aware (or ought to have become aware) of the non-completion
• For defective work: as for the statutory warranty periods (6 years/2 years from completion)

If your builder has become insolvent or otherwise cannot rectify defects, urgent action to lodge a HBCF claim is critical. Our lawyers regularly assist with HBCF claim preparation, dispute resolution, and litigation against insurers who deny claims, see our litigation page.

When Should You Contact a Lawyer?

Contact Citilawyers for legal advice as soon as one or more of the following circumstances arise:

• defective works have been identified in residential building work;
• the builder refuses to rectify defective works;
• the works are incomplete, delayed, or abandoned;
• waterproofing, structural, or fire safety defects have emerged;
• disputes have arisen regarding progress payments or variations;
• an expert report identifies defective workmanship or non-compliance;
• a Rectification Order has been issued;
• your builder has become insolvent, disappeared, or died, requiring a claim to be made under Home Building Compensation Fund (HBCF) insurance;
• the statutory warranty period is approaching expiry;
• you have received a NCAT application or Court proceedings;
• an owners corporation has identified defects in common property; or
• you are unsure whether the issues identified constitute legally actionable defects.

The earlier legal advice is obtained, the more options may be available to resolve the dispute efficiently. To learn more about how we can assist, check our defective building work claims lawyers page.

Acting for Owners Corporations and Purchasers

Owners corporations and purchasers face particular challenges in defective building work disputes involving common property, latent defects, and statutory warranty claims.

We advise owners corporations and purchasers regarding:

• statutory warranty claims under the Home Building Act 1989;
• common property defects;
• waterproofing, structural, fire safety, and building compliance issues;
• coordination of claims involving multiple lot owners;
• expert evidence and defect reports;
• disclosure and defect issues arising on the purchase of residential property;
• owner-builder disputes and HBCF insurance claims;
• claims under the Design and Building Practitioners Act 2020; and
• litigation strategy in NCAT and Court proceedings.

We also advise on statutory duty of care claims against builders, developers, contractors, and design practitioners under the DBP Act.

Acting for Builders, Developers, and Contractors

We also act for builders, developers, contractors, and other construction participants defending Home Building Act disputes.

This includes:

• defending defective work allegations;
• disputes concerning variations, delays, and payment claims;
• challenging causation and scope of alleged defects;
• disputing expert evidence and defect reports;
• defending NCAT proceedings and Court litigation;
• advising on rectification obligations and statutory warranties;
• advising developers regarding defect liability and compliance obligations; and
• advising on regulatory investigations, Rectification Orders, and building compliance issues.

Early legal advice is often critical in limiting exposure, preserving evidence, and resolving disputes before formal proceedings escalate.

Why Choose Citilawyers?

Citilawyers provides practical and strategic advice in residential building disputes across NSW.

Our approach focuses on:

• commercially realistic outcomes;
• early dispute resolution where possible;
• strategic use of expert evidence;
• strong representation in NCAT and Court proceedings; and
• practical advice tailored to the construction industry.

We understand that building disputes can place significant pressure on homeowners, builders, and owners corporations alike. Our team works closely with clients to resolve disputes efficiently while protecting their legal and commercial interests.

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