A Certificate of Acceptance can help with certain building work already completed without the required consent. ArchSolutioNZ helps homeowners understand the likely pathway, prepare as-built documentation and coordinate the evidence council may need.
Bottom line
Start by choosing the right pathway. Council can only assess completed work that can reasonably be verified. Hidden elements may need opening up, specialist reports, remedial work or may be excluded from the Certificate of Acceptance.
Choose the correct approval
A CoA is not the default workaround for a missing CCC. The deciding question is whether consent already existed, the work was completed without consent, or the work is still proposed.
Building consent was issued, but final sign-off is missing.
Missing final inspections, producer statements, certificates or old consent records normally point to CCC support—not a CoA workaround.
Open CCC helpCertain work was completed without the required building consent.
Council assesses what can now be verified. Hidden work may need opening-up, specialist evidence, remediation or may be excluded.
Choose CoA supportThe work is proposed and has not yet been built.
Use the normal building consent pathway for council-ready drawings, specifications and supporting consultant information before construction.
Open Building ConsentsChoose the right pathway
Each pathway below goes deeper into a specific situation. Use the free check if you are still unsure what applies.
Best for
Owners with alterations, additions, decks, sleepouts, bathrooms or converted spaces already built without the right approval.
Understand whether a Certificate of Acceptance may be possible, what evidence may be needed, and where council may need specialist verification.
Open next stepBest for
Auckland homeowners dealing with property file gaps, LIM issues, unconsented work or council evidence expectations.
Clarify the likely CoA pathway, evidence gaps and consultant inputs before lodging with Auckland Council or responding under sale pressure.
Open next stepBest for
Owners who already know they need a CoA and want help assembling drawings, reports, forms, photos and supporting evidence.
Prepare a clear package that explains what work is covered, what can be verified, what evidence supports it and what consultants may need to confirm.
Open next stepBest for
Completed work with missing, incomplete or poor records where council needs drawings that show what is actually built.
Create architectural base drawings for unconsented rooms, decks, additions, conversions and property-sale issues where records are thin.
Open next stepBest for
People searching for retrospective building consent who need to know whether the real pathway is a CoA, building consent or another route.
Separate proposed work from completed work, and avoid spending on the wrong approval pathway before the issue is properly understood.
Open next stepBest for
Owners, buyers and agents dealing with LIM issues, due diligence questions, settlement pressure or sale objections.
Identify what the issue appears to be, what evidence exists, and what technical pathway may reduce uncertainty before decisions become urgent.
Open next stepBest for
Anyone unsure whether completed work is likely to fit a Certificate of Acceptance pathway.
Use the free CoA feasibility check before paying for reports, as-built drawings or the wrong council process.
Open next stepEvidence depends on the work
Different completed work needs different evidence. Council still decides what can be accepted, and concealed work may require opening-up, qualified reports, remediation or another pathway.
Use, fire separation, ventilation, sanitation, planning and new or altered services can all affect the pathway.
Likely evidence: existing-use records, as-built plans, fire and services information, plus specialist review where required.
Planning a proposed conversion?Structure, barriers, stairs, fixings, membranes and durability need to be considered against what can still be inspected.
Likely evidence: measured drawings, visible framing or opening-up records, structural review and product information.
Planning proposed deck work?Waterproofing, fixture changes, plumbing, drainage, ventilation and hidden wet-area work create different verification limits.
Likely evidence: as-built layouts, photos, installer records, drainage information and waterproofing or specialist evidence.
Planning proposed wet-area work?Beams, lintels, foundations, bracing and altered load paths can be difficult to verify once linings and finishes conceal the work.
Likely evidence: as-built drawings, opening-up, structural review and a defined remedial or documentation scope.
Planning proposed alterations?Connected resources
The service pages help you choose a support pathway. The guide, tool and related services help when you need education, triage or a different council process.
Our CoA process
We review photos, property file information, LIM notes, owner details, drawings, invoices or council correspondence.
We identify whether the issue is likely to be CoA, building consent, CCC support, planning advice, remedial work or another council process.
We identify what as-built drawings, photos, reports, inspections or specialist evidence may be needed.
We prepare architectural documents and coordinate engineering, drainage, fire, waterproofing or other specialist inputs where relevant.
The CoA package is organised so council can understand what is being applied for and what evidence supports it.
If council requests clarification on the documents we prepared, we help update the relevant information and coordinate responses.
Why ArchSolutioNZ
We help avoid spending on the wrong approval pathway, prepare architectural information that reflects what is actually built, and coordinate specialist input where the scope requires it.
CoA FAQs
A Certificate of Acceptance is a council pathway for certain building work that has already been completed without the required building consent. It is not the same as a normal building consent or a Code Compliance Certificate.
No. Council can only assess what can reasonably be verified after the work is complete. Some work may need opening up, specialist reports, remedial work, planning advice or another pathway.
People often use the phrase retrospective building consent, but in New Zealand the pathway for completed work without consent is often a Certificate of Acceptance. The correct route depends on what was built, when, and whether any consent already exists.
That may belong under Council Support rather than a standard CoA pathway. The issue may involve final inspections, old consent records, missing producer statements, remedial work or Code Compliance Certificate strategy.
No. The evidence depends on what was built and what can still be verified. A deck may need structural and barrier evidence, while a bathroom may need waterproofing, plumbing and drainage evidence. A CoA is not guaranteed, and hidden work may need opening-up, specialist reports or remediation.
Official references
These official resources help explain why CoA evidence, scope and verification limits matter.
Start with a pathway check. Send the work description, photos, property file notes or council correspondence and we will help identify the sensible next step.
