How much does an ADU cost in Sacramento?

The cost to build an ADU in Sacramento can vary widely depending on various factors such as on-site conditions, construction style, materials, and finishes. A detailed cost estimate will typically require consultation with a contractor. As a rough guide, about 80% of the total project budget can be expected to go towards construction (materials and labor), with the remaining 20% covering consulting, design, and permitting fees. Additionally, the City of Sacramento collects certain fees for the review of each ADU application, including a Planning Application fee (flat rate), Building Plan Review fee (variable), and other miscellaneous fees that are generally determined by the valuation of the project​1​.