Phone: 02 94817443

Building A Granny Flat In Your Backyard


18-North-Richmond-Gary-Melissa1Ever thought of turning excess backyard space into a beautiful, well-furnished 2 or 3 bedroom property? Called a granny flat, these buildings are constructed on the additional space on existing properties for grandparents, parents or children, or for renting out to tenants. A mandatory requirement, to get the approval of granny flat designs in Australia is to have a backyard with sufficient space. This can be sought from your respective local council for the construction of a flat and can be a long and involved process.

Granny Flat Requirements

With a recent push towards affordable housing in NSW, a property owner who is planning to build a flat on his or her backyard is allowed to do so with much greater ease.

Granny flats are now permitted in all residential zones across the State, subject to meeting the following requirements:

  • There is only one house and one granny flat on the lot
  • The combined total floor area of the house and the granny flat complies with the floor spacearea controls in the local environment plan
  • The maximum floor area of the granny flat is no greater than:
    • 60 square metres; OR
    • The maximum floor area prescribed by the council in the local environmental plan
  • The lot is not subdivided
  • The granny flat meets planning controls such as building height and setbacks, floor space ratios, and open space in the local environmental plan and/or the complying development provisions in the Affordable Rental Housing SEPP.


So whether you are thinking of getting your parents or grandparents a fully furnished flat, to add additional value to your property or as an investment property for additional rental income, make sure that you have a space complying by the conditions set by the council.

This is applicable to all property owners and is mandatory for getting council approval to build a flat in the backyard of a property. Approval cannot be obtained until the application for the construction meet all development criteria set by the relevant council.

The size of available space matters a lot in the construction of a granny flat. The design of the building very much depends on the size of the land, other environmental factors and the location of utilities. So, when you are choosing a design, it is advisable to keep the space size in mind.  There are different types of designs for granny flat made to suit different needs.  Not only can a reputable granny flat builder help with reducing red tape, they can make the whole process smoother as well as helping you with a granny flat design.



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