Granny Flats WA has long been Perth’s trusted builder for Granny Flats, and also renovations and extensions. We have many years experience and know-how. Booragoon (08) 9329 6888 and Joondalup (08) 9329 6800. Most people know that we build granny flats, but did you know that we also build renovations and extensions: from a small studio or office all the way to a complete home renovation to transform your 2 bedroom, 1 bathroom home into a 5 bedroom by 3 bathroom family home with pool and al fresco.