Common projects & consent
Detailed guidance for the most common home improvement projects in New Zealand. Learn what typically requires consent — and what typically doesn't.
General guidance only. This website provides general guidance only. It does not confirm that building work is exempt and does not replace advice from your local council, architect, architectural designer, engineer, planner, licensed building practitioner or other suitably qualified professional. Any exempt building work must still comply with the New Zealand Building Code and any other relevant legal requirements. Full disclaimer →
Decks & Outdoor Platforms
Decks are one of the most common home improvement projects in New Zealand. Whether a deck requires building consent depe…
Bathroom Renovations
Bathroom renovations are a major source of consent uncertainty for NZ homeowners. Whether you need consent depends heavi…
Garage Conversion
Converting an existing garage into a habitable room — such as a bedroom, office, rumpus room, or minor dwelling — almost…
Retaining Walls
Retaining walls hold back soil and can be significant structural elements. Whether consent is required depends primarily…
Relocatable Houses
Relocating an existing house to a new site is a complex process that almost always requires building consent — and frequ…
Fences & Boundary Walls
Fences are one of the most common home improvement projects in New Zealand, yet the consent rules are widely misundersto…
Kitchen Renovations
Kitchen renovations are one of the most common home improvement projects in New Zealand. Whether building consent is req…
Heat Pump Installation
Heat pumps are one of the most popular home upgrades in New Zealand. Standard split system heat pumps are explicitly lis…
What Needs Building Consent in NZ?
Building consent is required for most significant building work in New Zealand under the Building Act 2004. However, a w…
Want professional advice on your project?
The team at 4C Architecture Studio works with NZ homeowners every day — from initial consent questions through to design and documentation.