Costs & Financing Archives - ADU Project Planner

California Garage Conversion ADU Cost: What to Budget for in 2026

August 29, 2026August 29, 2026 by ADU Project Planner

Where a California garage ADU budget goes, showing planning, permits, construction, utilities, site work and contingency categories

Planning a garage-to-ADU conversion in California? Learn how to budget for design, permits, impact and school fees, utilities, construction, property taxes, contractor risk, contingency and financing using current official guidance.