Checking whether your garage conversion has building consent is straightforward once you know where to look. The most reliable method is to search your local council's property records or order a Land Information Memorandum (LIM) report — both will show any consents issued and whether a Code Compliance Certificate (CCC) was granted. If you're buying a property or planning renovations, this check is essential.
Why Building Consent Matters
In New Zealand, most garage conversions — particularly those creating a habitable room like a bedroom, office, or sleepout — require building consent under the New Zealand Building Code. Consent ensures the work meets minimum standards for things like insulation, ventilation, weathertightness, and structural integrity. Unconsentable or unconsented work can affect your insurance, your ability to sell the property, and the safety of anyone living in the space.
MBIE Building Performance is the government authority that oversees the Building Act 2004, and their website has clear guidance on when consent is and isn't required.
Step 1 – Order a LIM Report From Your Council
A LIM report is the most comprehensive way to check the consenting history of any property. It's issued by your local territorial authority (city or district council) and lists:
- All building consents applied for and granted
- Whether a Code Compliance Certificate (CCC) was issued
- Any outstanding notices or requisitions
- Zoning and drainage information
LIM reports vary in cost and processing time by council (as a guide — check with your local council for current fees and timeframes). You can usually order one online through your council's website.
Step 2 – Search Council Property Files Directly
Most councils allow you to request a property file search or view building records online. This can be quicker and cheaper than a full LIM if you only need consent information. Contact your local council's building or consents team and ask for:
- A list of building consents associated with the property address
- Copies of any approved plans or inspection records
- Confirmation of whether a CCC was issued for the conversion
Some councils have online portals where you can search by address yourself.
Step 3 – Check the Original Plans and Documents
If you already own the property, check whether the previous owners left any paperwork. Look for:
- A building consent approval letter from the council
- Stamped and approved architectural or building plans
- A Code Compliance Certificate — this is the document that confirms the work was inspected and met the Building Code
- Any producer statements from engineers or specialists
No paperwork doesn't necessarily mean no consent — the council records are the definitive source.
What the Records Might Show
| Scenario | What It Means |
|---|---|
| Consent granted + CCC issued | Work was consented and signed off — ideal |
| Consent granted, no CCC | Work started legally but was never fully inspected or signed off |
| No consent on record | Work may have been done without consent — needs investigation |
| Schedule 1 exemption applies | Some minor work is exempt; confirm with your council |
Understanding Schedule 1 Exemptions
Not all building work requires consent. Schedule 1 of the Building Act 2004 lists exemptions for certain minor or low-risk work. However, converting a garage into a habitable room almost always exceeds these exemptions because it typically involves changes to structure, insulation, plumbing, or electrical systems. Always confirm with your council whether an exemption genuinely applies — don't assume.
MBIE Building Performance publishes guidance on Schedule 1 exemptions to help you understand what's covered.
What If There's No Consent?
If your search reveals the conversion was done without consent, you have a few options:
- Apply for a Certificate of Acceptance (COA): This is a formal process where the council assesses whether the existing work meets the Building Code. It's not always possible if work is hidden in walls, and councils may require invasive inspections.
- Retrospective consent: In some cases, councils may allow you to apply for consent after the fact, but this is complex and not guaranteed.
- Disclose when selling: You are legally obligated to disclose known unconsented work to buyers. Failure to do so can have serious legal consequences.
- Seek legal advice: If you've purchased a property with unconsented work, a property lawyer can advise on your options and any recourse against the previous owner.
For guidance on your rights and obligations, BRANZ is a trusted NZ building research authority with useful resources for homeowners.
Healthy Homes and Rental Properties
If the converted garage is used as a rental, it must also comply with the Healthy Homes Standards, which set minimum requirements for heating, insulation, ventilation, moisture, and draught stopping. Unconsented conversions often fail these standards. Check Tenancy Services for the full requirements.
When to Call a Professional
If you find the conversion was done without consent — or you're unsure how to interpret what the council records show — it's strongly advisable to engage a Licensed Building Practitioner (LBP) or a qualified building inspector. A professional inspector can assess the physical condition of the conversion, identify any non-compliant work, and help you understand your next steps.
You can find experienced local building inspectors and LBPs on tradedirectory.co.nz. Always check that any LBP you hire is currently registered at Licensed Building Practitioners.
If the conversion involved electrical or plumbing work, those elements must have been carried out by licensed tradespeople. Electrical work is regulated by the Electrical Workers Registration Board (EWRB) and plumbing by the Plumbers, Gasfitters and Drainlayers Board (PGDB). Unconsented or unlicensed work in these areas is a serious safety risk.
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