Buying guide
House extensions: Everything you need to know
Read this before you break ground
AI summary
Considering a house extension? Costs range from $50k for a basic room to over $400k for larger projects, influenced by size, materials, and site conditions.
The process involves an architect and builder, securing finance, and getting council consent. A solid contract is crucial, and it's wise to budget for a 15% contingency. Upon completion, apply for a Code Compliance Certificate (CCC) to finalise the project.
How much does a house extension cost?
Rough guide to NZ house extension costs
What affects the cost of house extensions?
Extent of extensions
Materials used
Your site’s conditions
Council consents
In most cases you'll need to get consent before extending your property.
The NZ house extension process
It's a good idea to get a clear idea of costs before you start a project
If you can do some work yourself you could save thousands of daollrs.
Hot tips for building an extension
The contract is key
Think about your neighbours
Prioritise consents
Demand cost and timeline certainty but plan for blow outs
Build for the future
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