The 3 Step Process

1Assessment & Quote

3 Step Process 03

Prior to the site visit, a desktop assessment will be completed to check whether your property meets the minimum requirements for granny flat compliance.

We check lot size, width, setbacks, surrounding environment (laneways, reserves etc).

At this stage it is also ideal to investigate further by looking at your 149(2) planning certificate, sewer diagram and title search to ensure compliance with State Government requirements but more importantly to find any issues that may add to the cost so that it’s clearly covered in your proposal.

A representative from Granny Flats Australia will visit your site for an inspection. The following are checked:

  • Access to your back yard
  • Slope of your back yard
  • Stormwater Connection
  • Electricity Connection
  • Water Connection
  • Gas Connection
  • Trees
  • Positioning of the Granny Flat
  • Distance from other structures
  • Items to be demolished

We will then prepare and provide you with a preliminary fixed quote for your consideration which includes the cost to build one of our standard designs on your block, plus any additional site costs and connection of services.

If you require upgrades or other items, we are very happy to revise the proposal for you. It is at this stage we suggest that you come in and meet with us to discuss your project in depth.

2Design & Approval

3 Step Process 06

Now the fun begins. This is usually a very exciting time as you get involved in the design and colour selection process. This is a time where we take care of all the detail allowing you to simply enjoy. Here’s a brief summary of what to expect:

  • Upon proposal acceptance, a survey is ordered (and if required, a sewer pegout is ordered also)
  • Concept design begins
  • You will be invited to come in for a ‘Material & Colour Selection’ session with our Project Coordinator
  • Architectural plans are refined (modifications to your chosen design are allowed and you will have the opportunity to sign off during the process)
  • Detailed bathroom, kitchen and electrical plans will be drawn
  • BASIX is completed
  • Other consultants and authorities are engaged (Sydney Water, Structural Engineer, Stormwater Engineer)
  • All documentation is prepared for lodgement with the Private Certifier
  • Upon approval by the Certifier, a Department of Fair Trading Building Contract is drawn up and provided to you for checking and signing
  • The project is handed over to our construction team for preparation.


3 Step Process 08

We will build your granny flat in your backyard with minimum disturbance to you and your tenant, and in accordance with your selected materials, colours and approved architectural plans.

Initial weeks involve site establishment & installation of foundations, framing, windows, gutters, fascias, eaves & external cladding. Then insulation to the ceiling and walls is installed, waterproofing, kitchen, tiling and plumbing installation.

Final weeks involve shower screen & wardrobe fit out, painting, electrical fit out, final clean and final hand over of project to the owner.

The above time frame is typical and may vary on all projects, subject to the weather conditions, availability of materials, complexity of the project, site conditions and other unexpected delays.

Always keep in mind that Granny Flats Australia are the builder and construction is not outsourced.

Have questions?

If you are interested in building a granny flat to your property, either for
investment, extra income or additional living space for family, contact
us today.

Granny Flats Australia Pty Ltd
ABN 49 137 405 513
8/10 Anella Avenue, Castle Hill 2154


Monday-Friday 9am-4:30pm
Closed for lunch 1pm-1:45pm daily


Saturdays – Closed
Weekdays – 9am – 4:30pm

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