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We’ve come a long way from England when the widow could stay in the ‘dowager house’ when the heir took over an estate but what was the ‘dowager house’ is now what we call ‘Granny Flats’ today.

But what is a Granny Flat?

A Granny flat is simply a small house on your property.

Its defined as a self-contained unit, usually located at the rear it can share a backyard with the main home or have its own section. Local councils will dictate the maximum size a Granny Flat can be depending on the size of your existing land.

What’s in a Granny Flat?

Aside from the size there’s no difference between a Granny Flat and a house. You’ll usually find:

  • One or two bedrooms
  • Kitchen or kitchenette
  • Bathroom or ensuite
  • Laundry area
  • Living or dining area

Who are Granny Flats suited to?

Although Granny Flats are highly suitable for aging people (parents, grandparents) because they can keep their independence, they are highly versatile in terms of who can occupy them. Children who are moving out, guest house or rental for additional income.

What requirements are there when building a Granny Flat?

  • There can only be a maximum of one Granny Flat and one house on the same lot.
  • The combined total area used is to be in accord with the local environment plan relevant to the house in question.
  • The maximum area used does not exceed 70 square metres; or that prescribed by the local environment plan.
  • There is no SUBDIVISION* of the lot.
  • The Granny Flat must meet the planning controls set by State Legislation – for example, open space. It must also/ or meet the provisions of the Residential Design Codes.
  • It must comply in every instance to the National Construction Code.


ITS TIME TO START NOW! Contact the team at Perth Granny Flat Specialist’s today – (08) 9284 7778


We work with you to build you a superior quality granny flat that is built to your budget, on time and defect free. Our clients get to stay informed every step of the way and can sleep well at night knowing that they are being looked after by professionals who genuinely care.


Copyright All Rights Reserved © 2015 Swan River Construction Pty Ltd

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