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Defect Origin Assessments (DOA)

Contact us today to find out more about our expert commercial dilapidation services

Know Exactly What Caused the Damage โ€” and When

When damage is discovered during or after construction, the stakes are high. Questions about responsibility, timing, and liability often ariseโ€”especially when thereโ€™s no clear-cut evidence. Thatโ€™s where AusDilapsโ€™ Defect Origin Assessment (DOA) comes in.

Our DOA reports provide expert, evidence-based analysis of visible damage. We assess the nature, location, and context of each defect to determine what caused it, when it likely occurred, and how confidently that conclusion can be drawn.

Our DOA Reports Include:

  • Site-specific photographic comparisons
  • Defect categorisation and location mapping
  • Analysis of contributing risk factors (e.g. vibration, water ingress, structural movement)
  • Summary of likely origin and timing of damage
  • Confidence rating assigned to each conclusion
  • Recommendations for next steps, further inspection, or remediation

What Is a DOA?

A Defect Origin Assessment is a specialist report that supplements pre- and post-construction condition reports. It identifies physical changes in a structure and uses photographic evidence, site context, and engineering insight to assess whether a defect is:

  • Pre-existing
  • Construction-related
  • The result of worsening conditions
  • Or unrelated entirely

Each DOA is supported by a confidence rating that reflects the strength of the conclusionโ€”providing clarity and transparency when it matters most.

Why DOAs Are Essential

Defect disputes can stall projects, damage reputations, or result in costly legal claims. A DOA helps protect all parties involved by delivering an objective, third-party analysis that clarifies what actually happened—and why.

This service is increasingly used by builders, developers, councils, insurers, and property owners seeking resolution, protection, or supporting evidence in complex projects.

Ask AusDilaps TODAY about protecting yourself during your commercial construction or development project

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1800 345 277

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Need Clarity on a Defect?
Start Here.

If you’re dealing with unexplained cracking, property complaints, or potential claims, a Defect Origin Assessment can provide the clarity you need to move forwardโ€”confidently, and with documentation to back you up.

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