FAQs

You can build a granny flat on either a concrete slab or steel piers. At Inhouse Granny Flats, our preferred method of construction is concrete slab on ground. However, some properties are unable to use this option when they’re within a flood zone or if the property is on a large slope.

Yes. We have a large range of suppliers, colours and materials for you to choose from in our own Sydney showroom. At Inhouse, we understand the overwhelming nature of building your first project. So that’s why we offer you our expertise and guidance during the material selection stage.

No, our granny flats are permanent structures. At Inhouse Granny Flats, we specialise in building custom-designed homes that are cut and constructed on-site by fully licensed and qualified tradesmen.

Generally it takes 12 -14 weeks for your granny flat to be built from start to completion. This is also subject to weather and other unforeseen circumstances.

Granny flats can only be rented out once the private certifying authority has issued the final occupancy certificate.

Yes. All building approvals come provided with a seven-year structural home owners warranty on your granny flat.