When HBCF Cover Is Required for Residential Building Work in NSW

The general threshold

In NSW, a building business acting as principal contractor generally must obtain Home Building Compensation insurance for residential building work valued at more than $20,000 including GST, unless the work falls within an exemption. The obligation commonly applies to new houses, duplexes, triplexes, low-rise residential buildings of up to three storeys, renovations, extensions, swimming pools and certain associated structures.

The threshold is not an invitation to divide one project into several smaller contracts. Current SIRA guidance requires related contracts to be considered together where they form part of the same residential building project. Artificially splitting a $30,000 scope into two $15,000 contracts does not necessarily remove the insurance obligation.

Timing is part of compliance

The certificate must be obtained and provided before the contractor starts the insured work and before the homeowner pays any money, including a deposit. A promise that the certificate will be issued later is not equivalent to cover. A quotation, broker invoice, eligibility letter or screenshot of a builder portal is also not the project-specific Certificate of Insurance.

This timing protects the homeowner before funds leave their control. Once a deposit has been paid or work has begun without valid cover, the owner may face a far more difficult position if the contractor later becomes insolvent or a serious defect emerges.

The work and the contracting party both matter

The principal contractor must obtain the policy in the same legal name used in the building contract. A certificate issued to a related company, a director personally, a business name without the correct legal entity or a subcontractor may not satisfy the obligation for the contract the owner actually signed.

Subcontractors working for the principal contractor generally do not need separate HBCF cover for that same project. Their work should sit under the principal contractor's insured project. The position can change where an owner contracts directly with a separate trade, because that trade may itself become the principal contractor for its own residential building work.

Exemptions require specific checking

Some work and building types are exempt, including certain high-rise multi-unit projects and other categories prescribed by NSW law. Exemptions are technical and should not be assumed merely because the project is unusual, staged, owner-managed or connected with a development company.

A homeowner should check the proposed work through the current SIRA guidance or HBC Assist tool, verify the contractor's licence and ask for written confirmation where the position is uncertain. Contract value should include GST and should be assessed before any payment is made.

Practical takeaway: Treat HBCF as a pre-contract compliance item. Confirm that the work requires cover, that the correct principal contractor obtained it and that the certificate was issued before both payment and commencement.

How ARK Houses can help

When ARK Houses enters a residential building contract, we keep the contracting entity, licence, project scope and required HBCF certificate aligned. On a recovery project, we apply the same discipline to the replacement contract before taking payment or commencing insured work.

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