Costs
Hidden Costs of Building an ADU: The 2026 Homeowner’s Guide
That $150,000 contractor bid for your California ADU might actually be a $220,000 project in disguise. It's a common frustration to realize that a quote often ignores the site-specific realities of your property, leaving you to discover the hidden costs of building an adu the hard way. You're likely feeling cautious about low-ball estimates and stressed by the complexity of local building codes. It's completely normal to fear running out of money mid-build when the financial finish line keeps moving.
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