How should you assess building workmanship and tolerances?
Owners, builders and property professionals
A tolerance gives you a reference for discussing workmanship. It does not, by itself, tell you why a crack appeared, whether a building is safe or who must pay for repairs. A useful comparison matches the applicable provision to the actual work, its dates and the way it has been measured.
For an assessment of recurring leaks or other building defects, explore our building defects inspections. An article cannot determine the cause or appropriate solution for an individual property.
Check the edition before the number
The current Victorian advisory workmanship framework applies to domestic building contracts entered into, or building work that commences, on or after 1 August 2026. It does not apply retrospectively. The age of the house alone will not settle the question: an old house can contain a recent extension, earlier repairs and original work. Keep the contract date, commencement records, scope and completion documents together. Where those dates span the change, ask the relevant practitioner which assessment basis applies rather than inventing a rule from the property's age.
Advisory workmanship guidance is not legislation or a mandatory construction standard. Applicable legal requirements, approvals, contract drawings and specifications need to be considered; manufacturer installation requirements also take precedence over advisory guidance. A contractual choice cannot remove a statutory obligation. A project may use a Performance Solution, a Deemed-to-Satisfy Solution or both. A standard quoted in a general checklist may therefore be the wrong basis for that particular work.
Read the conditions attached to the provision
Identify the material and issue first. A slab crack, a plasterboard joint and a gap under skirting are different questions. Then read the relevant provision with its measurement and viewing methods. Keep the reference length, datum, lighting, completion condition and any stated period with the result. Recycled materials, old work and repairs may need different consideration from an entirely new finish.
Dates deserve their own record. General workmanship periods may be counted from completion, while some crack provisions expressly discuss observation after identification. Preserve both the completion date and the date the symptom was first recorded. These passages are not a substitute for advice about a contract, notification requirement or legal deadline.
Use a concern to frame a better enquiry
Instead of sending a photograph labelled 'non-compliant wall', describe the location, material, observed condition, measurement method and change, then identify the guide provision you want checked. Add the relevant drawing or product instruction. This gives the practitioner something specific to assess and leaves room for requirements or site conditions that a photograph cannot establish.
Consult a suitably registered building practitioner when investigating a tolerance exceedance and its underlying cause. An advisory workmanship comparison does not allocate responsibility to rectify. Consequential damage also requires a clear link between issues; two defects appearing at a similar time do not establish that link on their own.
Do not wait for a completed checklist where there is sudden movement, apparent instability, falling material or an electrical or gas hazard. Keep away from the affected area and obtain urgent professional advice, involving emergency services or the relevant utility where appropriate. A workmanship comparison is not a reason to delay a safety response.