Flat Grannys is a trusted and reputable name in the granny flat industry, and we pride ourselves on our personalised and customised service.


If you are looking to build a granny flat (secondary dwelling) on your property, then you have come to the right place. Located in Sydney, Flat Grannys specialises in designing granny flats in accordance with the NSW Affordable Housing State Environment Planning Policy (SEPP).

Whether you want to accommodate the in-laws, work from home or earn rental income from your property, a granny flat is certainly a great investment.

Once we have undertaken a desktop review of your site / property and have a greater understanding of your vision, our team will design a plan to suit your budget. You can choose from our range of pre-designs, or together, we can create a bespoke design that is tailored just for you.

There is no one-size-fits-all approach to building a granny flat as everyone’s lifestyle is unique. That is why we will work with you every step of the way to come up with an affordable and modern granny flat that meets the needs of you and your family.



Flat Grannys offers a number of quality pre-designs to choose from



Our talented team offers complete transparency when it comes to the design process of your granny flat.