Costs
ADU Project Budget Template: A 2026 California Homeowner's Guide
Did you know that the hidden soft costs of a California ADU, like soil testing and utility connection fees, can consume up to 15% of your total budget before the first nail is even driven? It is a common source of anxiety for homeowners who realize their initial estimate could easily spiral into a financial headache without a clear ADU project budget template. You want to build more space for your family or generate rental income, but the fear of a 20% cost overrun is enough to keep any property owner in a state of uncertainty.
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