The cost of granny flat construction can feel like a mystery, but you can crack it with the right data and a clear plan. In this guide I’ll walk you through the big‑ticket items, state‑by‑state permitting quirks, per‑square‑metre pricing for different finishes, and the hidden expenses that bite most owners. You’ll also get a realistic timeline, financing options, and a quick case study from a Melbourne backyard cottage. By the end you’ll know exactly where to focus your budge

Across Australia, the housing market is rapidly changing. With ever-increasing property prices, growing interest in multigenerational living, and flexible spaces some homeowners went back to the drawing board to replan their land use. The granny flat is one of the proposed solutions that keep on growing in popularity. These days, granny flats are no longer viewed as a simple backyard addition; they are now seen as thoughtfully designed independent tiny homes that respond to a