Building Disputes (AU) glossary
Building disputes in Australia span residential defect claims under Home Building Acts, security of payment under construction legislation, and commercial construction disputes resolved through adjudication, tribunals, and courts. The regulatory landscape is state-based, with each jurisdiction having its own regime. This glossary explains the core terms practitioners need.
This glossary covers 40 terms that construction and building lawyers encounter when advising on residential and commercial building disputes in Australia. Each definition references the relevant legislation or tribunal guidance.
Definitions
Adjudication
A rapid, interim determination of a payment dispute under security of payment legislation — binding unless overturned by a court or tribunal.
Adjudicator
An authorised person who determines a security of payment dispute — appointed by an authorised nominating authority after an adjudication application is lodged.
ANA (Authorised Nominating Authority)
A body authorised to nominate adjudicators for security of payment disputes — such as Adjudicate Today or Resolution Institute.
AS 2124
A widely used Australian Standard general conditions of contract for construction — specifying roles, variations, defects liability, and dispute mechanisms.
AS 4000
The current Australian Standard general conditions of contract for construction, replacing AS 2124 — commonly used in commercial construction.
Building licence
A licence required to carry out residential building work — issued by state regulators such as NSW Fair Trading, VBA (VIC), or QBCC (QLD).
Building practitioner
A person registered or licensed to carry out building work — owing statutory duties to the building owner under recent duty of care reforms.
Claimable variation
A variation to the scope of work that entitles the builder to additional payment — must generally be in writing and approved in advance under the contract and statute.
Compliance certificate
A certificate issued by a private certifier or council confirming that building work complies with the Building Code of Australia and development consent.
Construction contract
An agreement for the carrying out of construction work or the supply of related goods and services — the prerequisite for security of payment entitlements.
Defect
Work that does not meet the plans, specifications, statutory warranties, or the Building Code — the basis for a defect claim against the builder or developer.
Defect rectification order
A tribunal or court order requiring the builder to rectify defective work within a specified timeframe.
Defects liability period
The period after practical completion during which the builder must return to rectify defects — typically 12 months under standard contracts.
Design and Building Practitioners Act
The 2020 NSW Act creating a statutory duty of care owed by building practitioners to current and future owners for economic loss from defective work.
Duty of care (building)
The statutory duty owed by building practitioners to owners and subsequent purchasers for defective building work — created by the Design and Building Practitioners Act 2020 (NSW).
Expert determination
A dispute resolution process where an independent expert makes a binding or non-binding determination on a technical question — commonly used for quantum disputes.
Extension of time
An extension to the date for practical completion granted under the contract for qualifying delay events — the builder must give notice within the prescribed time.
Home Building Act
The NSW Act regulating residential building work — imposing licensing requirements, statutory warranties, and dispute resolution mechanisms.
Home building compensation (insurance)
Insurance required for residential building work over $20,000 in NSW — covering homeowners if the builder dies, disappears, or becomes insolvent.
Latent conditions
Physical conditions on or near the site that differ materially from those that could reasonably have been anticipated — entitling the builder to a variation or extension.
Liquidated damages
A pre-agreed sum payable by the builder for each day of delay beyond the date for practical completion — must be a genuine pre-estimate of loss.
Mediation
A facilitated negotiation process commonly required before tribunal or court proceedings in building disputes.
NCAT
The NSW Civil and Administrative Tribunal — hearing residential building disputes under the Home Building Act, including defect claims and payment disputes.
Occupation certificate
A certificate authorising occupation of a new building or part of a building — issued by the principal certifier after final inspection.
Payment claim
A claim for payment served under security of payment legislation — must identify the construction work and the claimed amount, and be served within the prescribed timeframe.
Payment schedule
The respondent's response to a payment claim — indicating the amount the respondent proposes to pay and reasons for any difference. Failure to serve triggers automatic liability.
Practical completion
The point at which the work under the contract is substantially complete, with only minor defects remaining — triggering the defects liability period and release of retention.
Progress payment
A payment to the builder during the course of the work, typically based on the value of work completed at each claim date.
QBCC
The Queensland Building and Construction Commission — the regulator of the building industry in Queensland, administering licensing, insurance, and dispute resolution.
Retention
A percentage of progress payments withheld by the principal as security for the builder's obligations — released progressively after practical completion and the defects liability period.
Scott Schedule
A tabular format listing each defect, the claimant's description and costings, and the respondent's response — commonly used in building defect proceedings.
Security of payment
The statutory regime ensuring persons who carry out construction work or supply related goods and services can recover progress payments — enacted in every Australian jurisdiction.
Statutory warranty
Implied warranties under the Home Building Act that residential building work will be done with due care, be fit for purpose, comply with plans, and be completed within a reasonable time.
Superintendent
The contract administrator under AS 2124 or AS 4000 — responsible for administering the contract, certifying payments, and assessing variations and claims.
Unfair contract terms
Terms in standard-form building contracts that are unfair under the Australian Consumer Law — void and unenforceable since 2023 amendments.
Unlicensed work
Building work carried out by an unlicensed person — the builder cannot enforce the contract and the owner may be entitled to a refund of money paid.
Variation
A change to the scope, quality, or timing of work under a construction contract — must generally be in writing and may entitle the builder to additional payment and time.
VBA
The Victorian Building Authority — the regulator of the building industry in Victoria, administering registration, compliance, and dispute resolution.
Warranty period
The statutory period during which a homeowner can make a claim under statutory warranties — six years for major defects and two years for other defects in NSW.
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These definitions are general explanations for educational purposes — not legal advice. Building dispute law differs between states and territories. Always verify against the current legislation, contract terms, and tribunal practice directions.
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