2025 pricing guide
How much does an ADU cost in Sacramento? (2025 guide)
Real numbers — not internet averages — for Sacramento-area homeowners. Pricing depends on ADU type, size, and finish level. Here's what we actually quote in 2025.
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2025 Sacramento ADU pricing
| ADU type | Typical size | All-in price |
|---|---|---|
| Junior ADU (JADU) | Up to 500 sqft, inside the existing home | $60,000 – $100,000 |
| Garage conversion | Typically 350–600 sqft | $80,000 – $150,000 |
| Attached ADU | Up to 50% of main home | $120,000 – $220,000 |
| Detached ADU | Up to 1,200 sqft | $150,000 – $300,000 |
All-in = design, engineering, permits, and construction. Site-specific costs (steep lots, long utility runs, panel upgrades) can push beyond these ranges. We give you a fixed written price within 24 hours of the site visit.
What drives the price
- • Size — bigger costs more, but cost per square foot drops as you scale up.
- • Utility connections — a long sewer or panel-upgrade run can add $10K–$25K.
- • Finishes — quartz vs. laminate, tile vs. vinyl plank, mid-range vs. premium appliances.
- • Site access — easy backyard access keeps labor down; tight side yards add cost.
- • Foundation and grading — flat lots are cheap; sloped lots need engineering.
Paying for it
Most Sacramento homeowners use an ADU-specific construction loan, a HELOC against the main house, cash-out refinance, or a combination. See our financing options page for current rates and the loan types we see most often.
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