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Granny Flats Cost $120K–$350K in 2025: Real Numbers
In 2025, constructing a granny flat typically costs between $120,000 and $350,000, influenced by design choices, site conditions, and material selections. These accessory dwelling units not only provide additional living space but also enhance property value and offer rental income opportunities. This guide covers essential expenses, project timelines, and key steps, from initial zoning verification to the final inspection, ensuring a compliant and long-lasting build.
By Melissa Flowers
6 min read