Skip to main content
Basix page

About BASIX

Dwelling types

BASIX categorises projects for assessment into three distinct residential building types

BASIX categorises projects for assessment into three distinct residential building types:

Definitions of these dwelling types can be found in our BASIX definitions. If you are unsure which BASIX residential building type applies to your project, you may need to show your building plans to the council or PCA.

Single Dwelling

Multi dwelling 

Alterations and Additions

Single house on one lot

Bungalow

One part of semi-detached home

Cottage

Secondary dwelling
(Granny flat) (change of use or next to existing principal dwelling)

Townhouse

Row house

Terrace

Residential flat building

Dual occupancy

Two houses on one lot

A new principal dwelling and a new Secondary dwelling (Granny flat)  

Addition to existing house

Swimming pool

Basement or an attic

Sunroom

Spa room

Sauna

Secondary dwelling (Granny flat)  (conversion of existing habitable space)