A California Homeowner's Guide to ADU Rules, Costs, and Financing
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About this Capsule
Building or buying a home with an accessory dwelling unit (ADU) in California involves navigating complex rules on impact fees, fire safety requirements, and water permits that can significantly affect project costs and timelines. Financing options vary widely—from construction loans to using retirement accounts—with each approach carrying different risks and benefits. Understanding these options helps determine whether the investment makes financial sense given local regulations and market conditions.
6 key options for adding or buying a home with an ADU
Impact fees and regulations for ADU development.
Try asking: “When are California impact fees usually collected for an ADU?”
ADU fire flow and water permitting checklist
How to finance an ADU project safely.
Permit process for ADUs in California
Comparing financing options for ADU projects
Using retirement accounts for home purchase
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A California Homeowner's Guide to ADU Rules, Costs, and Financing
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