05/28/2026
Thinking about building an ADU but not sure how to pay for it? We just published a full breakdown of every financing option available to San Diego homeowners in 2026 β including a City of San Diego program that offers 1% interest loans up to $250K that most people have never heard of.
We cover HELOCs, cash-out refis, construction loans, RenoFi, the SDHC program, and the CalHFA grant β ranked by who they actually work for. Plus a new Fannie Mae rule from March 2026 that changes how much you can qualify to borrow.
Includes an interactive payment calculator so you can run your own numbers before talking to a lender.
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Finance your San Diego ADU with confidence. We compare 6 loan options β HELOC, cash-out refi, RenoFi, SDHC program, and more β with real 2026 rates and a payment calculator.