How Structural, Minor and Major Defects Are Classified in Tasmania

What it is

Tasmania takes a different classification approach from most Australian states. The Residential Building Work Contracts and Dispute Resolution Act 2016 (Tas) uses the concept of a "minor defect" as a limb of the section 4 practical completion definition, but it does not run a two-tier warranty period. Section 32(1) fixes a flat 6 year proceedings limit for statutory warranty claims measured from the date of practical completion. Structural, non-structural, major and minor all run the same clock.

That flat structure is different from NSW, QLD, ACT and NT (all two-tier) and closer to South Australia (flat 5 years) or Western Australia (flat 4 months plus 6 year workmanship complaint window). What Tasmania adds that no other state has is the "defects document" mechanism in sections 4 and 44, which formalises the minor defect concept without changing the warranty period.

Minor defect as the completion trigger

Section 4 of the Act defines the date of practical completion by three conjunctive limbs. The third limb is the important one for classification: if the owner claims minor defects or minor omissions, the building contractor has given the owner a defects document for them.

That third limb turns minor defects into a completion trigger rather than a warranty period trigger. Practical completion does not occur until the defects document is handed over where the owner raises minor defects. A contractor cannot reach practical completion by declaring it.

The Act does not define minor defect. The ordinary meaning applies: a defect that does not unreasonably affect occupation. That aligns with the second limb of section 4, which permits practical completion to be reached with "minor defects or minor omissions that will not unreasonably affect occupation".

The defects document mechanism

Section 44 sits alongside the completion definition. Where on or after the completion day the owner claims minor defects or minor omissions and the building contractor agrees they exist, the contractor must give the owner a defects document as soon as practicable. Section 4 requires that document to list the agreed defects, state when they will be remedied, list the defects the owner claims but the contractor disputes and be signed by the contractor.

Section 44(3) then requires the contractor to correct the defects listed in the document within 6 months after giving it. The 6 month period runs from the defects document, not from practical completion. That is Tasmania's statutory analogue of a defects liability period.

No statutory major or structural split

Section 32(1) sets a flat 6 year period from practical completion for proceedings for breach of a statutory warranty. There is no separate longer period for structural defects or shorter period for cosmetic defects. Whether the defect is a cracked cornice or a failed roof structure, the same 6 years apply.

Section 32(3) supplies a fallback cascade where the date of practical completion cannot be established by reasonable diligence: the date a certificate of completion issues under the Building Act 2016 (Tas), otherwise the occupancy permit date, otherwise 2 years after the building permit, otherwise 2 years after building surveyor authorisation. Those fallbacks apply flat too, without any structural distinction.

What structural characterisation still does in practice

Even without a statutory split, TASCAT and CBOS look at severity when making orders and setting rectification timelines. A defect affecting structural stability, waterproofing or fire safety draws priority in the CBOS mediation cycle and typically a shorter TASCAT order timeframe. The Director of Building Control may direct urgent action on structural findings independently of the warranty analysis.

None of that changes the 6 year statutory period. All of it changes the practical experience of pursuing a defect claim.

How Tasmania compares

Tasmania is one of two flat-period jurisdictions in Australia. South Australia is the other, at 5 years under section 32(5) of the BWCA. Both leave classification off the warranty question and put it into the practical rectification pathway.

The two-tier states set separate periods. NSW: 6 and 2 years under section 18E of the HBA (with a statutory major defect definition in section 18E(4)). QLD: 6 and 1 years under section 29 of Schedule 1B of the QBCC Act. ACT: 6 and 2 years under section 88 of the Building Act 2004 (ACT). NT: 6 and 1 years under the Building Act 1993 (NT). Victoria and WA run their own mechanisms without a warranty split.

Tasmania at 6 years flat is longer than SA at 5 years but shorter than the structural period in the two-tier jurisdictions (all 6 years), and much shorter than the VIC 10 year long-stop.