Defect Origin Assessments (DOA)
When damage is discovered during or after construction, the stakes are high. Questions about responsibility, timing and liability arise — especially when there's no clear-cut evidence. That's where a Defect Origin Assessment comes in.
Expert, evidence-based analysis of visible damage.
Our DOA reports 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.
A defensible, transparent analysis.
- →Site-specific photographic comparisons
- →Defect categorisation and location mapping
- →Analysis of contributing risk factors (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
Protect every party with a third-party analysis.
Defect disputes can stall projects, damage reputations, or result in costly legal claims. A DOA delivers an objective, third-party analysis that clarifies what actually happened — and why — so you can move forward confidently, with documentation to back you up.
Defect Origin Assessments (DOA), answered.
What is a Defect Origin Assessment?+
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 supported by a confidence rating.
When do I need a DOA?+
If you're dealing with unexplained cracking, property complaints or potential claims, a Defect Origin Assessment provides the clarity you need to move forward — with documentation to back you up.
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