A construction defect is any flaw, fault, or deficiency in a building that results from faulty design, materials, or workmanship. Defects can range from minor cosmetic issues to serious structural problems.

Types of Construction Defects

Minor (Cosmetic) Defects

• Paint touch-ups needed
• Minor cracks in plasterwork (non-structural)
• Door adjustments, sticky handles
• Scratched tiles or benchtops
• Incomplete silicone or caulking

Major (Functional) Defects

• Waterproofing failures
• Drainage issues
• Window and door leaks
• Plumbing or electrical faults
• Non-compliant work (doesn’t meet BCA/NCC)

Structural Defects

• Foundation settlement or cracking
• Structural member failures
• Load-bearing wall issues
• Roof structure problems

Defect Liability Periods in Australia

State	Minor Defects	Structural Defects
VIC	5 years	10 years
NSW	2 years	6 years
QLD	6 months	6 years + 1 month
WA	Contract terms	6 years
SA	5 years	10 years

Frequently Asked Questions

How should builders manage defects?

Use a defect management system to log, track, and resolve defects. Record photos, assign responsibility, set deadlines, and document when defects are rectified. This protects you legally and keeps clients informed.

Can a builder be liable for defects after the warranty period?

In some cases, yes. If a defect was concealed or if there was negligence, liability can extend beyond the standard warranty period under Australian Consumer Law or common law.

What is the difference between a defect and fair wear and tear?

A defect is a fault in the original construction. Fair wear and tear is normal deterioration from use over time. Cracking plaster from ground movement is typically wear and tear; cracking from inadequate framing is a defect.