Complete a granny flat: step-by-step guide
Last updated: 3 July 2026
This guide provides the completion step-by-step instructions and process stages for granny flats built using the building consent exemption. It clarifies roles and responsibilities for key parties and explains important steps and considerations
Step 1: Building work is complete on site and required paperwork provided
The designer provides final plans, which form the final record of the completed granny flat. The designer provides a Certificate of Work to cover the final plans.
- Form 2A: Record of design work Licensed Building Practitioner [PDF 204KB]
Used by Licensed Building Practitioner (LBP) designers to record any restricted design work they complete on a granny flat.
Step 2: Maintenance information provided
The builder(s) provide maintenance information together with copies of relevant guarantees and warranties to the homeowner. The builder understands their future liability for defects.
Step 3: Completion
The homeowner has received all records and the building work is now ‘complete’. The homeowner uses the completion checklist to confirm that they have all the information that they need.
Step 4: Documents are provided to relevant parties
The homeowner provides the records to the council within 20 working days of the date the work was complete.
The homeowner also notifies completion to other relevant parties, for example insurer and lender.
Step 5: PIM updated and DCs are paid
The council receives the records and updates the PIM record on the property file, noting the completion date. They confirm that development contributions (DCs) are due and the homeowner pays these.
Step 6: Homeowner occupies completed building
The homeowner occupies and maintains the completed building.
Step 7: Granny flat record updated
The council updates the property file record for the granny flat and includes the information for future Land Information Memorandum applications.
Step 8: Future alteration, subdivision or sale
Once the building is complete the homeowner follows the usual process for altering, subdividing or selling an ‘existing building’.
Step 9: Completion records used
The council uses the PIM and completion records provided by the homeowner and the records that they hold about the building when assessing future applications to alter, subdivide or change the use of the building.
Where to get more help
Use the build a granny flat resources hub to find more tools, guidance and support on the granny flats exemption.