Can anyone build a granny flat on their block?

Can anyone build a granny flat on their block?

By Wally Gebrael | 05 September 2013

Wally Small Many people are led to believe that as long as they have a 12 metre-wide block and 450 square metres of land, then they are guaranteed approval to build a granny flat. Another misconception is that it takes just 10 days to get a permit to start building one in your back yard.

Blogger: Wally Gebrael, Design & Approvals manager, Granny Flat Solutions

The truth is, there is still a rigorous process of calculations, consultants and documentation required before approval can be granted for a granny flat.

In 2009, the NSW government introduced the Affordable Rental Housing SEPP to encourage granny flats as a form of affordable housing.
Below is a summary of some of the approval criteria to consider, to determine if a granny flat can be built on your block.


Other things you need to consider include:
-    How close are you to any large trees, either on the site or adjacent to the site?
-    Does your property slope towards the rear? If so how will the stormwater be connected?
-    Are you building over or near a Main Sewer Line?
-    Is your property Flood, Bushfire or Heritage affected?


When the site does not comply with even one of the criteria of the SEPP, all is not lost. There is still an opportunity to lodge a Development Application with your local council

wally blog pic

If you are unsure if your block is suitable for a granny flat, don’t take any chances. Make sure to seek the advice of an expert in this area.

Call Granny Flat Solutions today on (02) 9481 7443 or go to for more information.


Wally Gebrael
Wally Large

Wally is a respected designer who is passionate about all things relating to residential design and building. Living in a granny flat should not compromise your quality of life, and so we approach EVERY building with the same philosophy:

‘Not every backyard is the same, and so we design each building from scratch, to be unique and sustainable, to suit the client’s needs and the environment in which it is built’

Granny Flat Solutions are the Granny Flat specialists and we take care of the whole project for you, from your first obligation-free onsite discussion, right through the design, approval and construction stages of your granny flat. With over 100 years' combined experience, we only build quality and affordable granny flats that meet all Australian standards and will stand the test of time.



A flat is a term used to describe an apartment or a self-contained housing unit that occupies a small part of a large building.

Can anyone build a granny flat on their block?
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