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4/273 Alfred St N, North Sydney, Sydney, NSW

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Granny Flats

Granny Flats Sydney

At Betta Build Group, we have a range of innovative floor plans and designs for one, two and three bedroom granny flats. You will have the flexibility to customise one of our existing plans or we can help you design something special!
We have a reputation in delivering the highest quality, most cost effective and stress free granny flat solution in Sydney.Whether you are wanting to build a granny flat for a family member or to earn some extra income, the granny flat build stage is both exciting and daunting. Our many years of experience and knowledge will help you make the most complex of projects look like a walk in the park.

Our Granny Flat Designs

3 Step Granny Flat Building Process:

  1. 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.

  1. Design and approval
  • 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)
  • The project is handed over to our construction team for preparation.
  1. Construction

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.

Benefits of building a Granny Flat:

  • Independence for Family – building a granny flat is a great investment in intergenerational living. Whether it’s housing a young adult or your parents and grandparents, a granny flat lets you keep your loved ones close by.
  • Extra rental income – this is the major benefit of owning a granny flat. Gone are the days where you simply used them to house your teenager or ping pong table. Granny flats can be a solid source of income fetching up to $1000/week in capital cities.
  • Increase the Value of Your Property – a granny flat won’t just keep you close to your parents, grandparents or children; it’s also a great way to increase the resale value of your home. A granny flat on your property is an asset and their popularity is only increasing.


Where are granny flats allowed to be built?

Granny flats may be allowed in several residential zones. Councils determine if granny flats are permissible in the zones which include:

  • Zone R1 General Residential
  • Zone R2 Low Density Residential
  • Zone R3 Medium Density Residential
  • Zone R4 High Density Residential
  • Zone R5 Large Lot Residential (via development application only
  • Equivalent zones for the council area.

If you have questions about whether your granny flat is allowed in your area, speak to your local council.

Do other council panning controls still apply?

The State Environmental Planning Policy (Affordable Rental Housing) 2009, applies to granny flats built as complying development. If the proposed granny flat does not comply with the development standards, you will need to get development approval from your council. In this instance, council controls apply.

Do I need to obtain a BASIX certificate to accompany my application?

The State Environmental Planning Policy (Affordable Rental Housing) 2009 does not change the application of the BASIX requirements. Read more about how BASIX applies to granny flats and which BASIX tool to use.

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