How Much Does an ADU Add to Your Home Value?
Estimated increase in appraised home value from adding a detached ADU, across 11 major US metros for 2026. Watch the bars fill, then see your city.
Average ADU value bump
+$0
range +$143,000 to +$340,000
🟠 biggest value bump·🟢 all others·tap a city for its full cost guide
🏡 Turn that equity into a building budget.
An ADU can add six figures of appraised value — and many homeowners tap existing home equity to fund the build. See what financing you could qualify for; checking rates won't affect your credit score.
Data & method: Value-increase estimates apply a market-typical value-add ratio (roughly 65–85% of build cost, higher in supply-constrained, high-rent metros) to ADUCosts 2026 build-cost figures. Tap any city for its full local cost breakdown.
Disclaimer: Actual appraised value depends on the local market, lot, ADU size, and finishes. These are estimates for general guidance — not an appraisal, valuation, or financial advice. Confirm with a licensed appraiser and local builders before budgeting.
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