How Much Does an ADU Cost in West Sacramento?
Updated June 12, 2026 · Upside ADU
Quick answer
A detached ADU in West Sacramento costs about $125,000–$432,000 turnkey in 2026, or roughly $250–$360 per square foot (design, permits, and construction included). A 750 sq ft 2-bedroom unit averages $187,500–$270,000; garage conversions and Junior ADUs cost less. West Sacramento build costs track the central-Sacramento baseline closely — the price differences you'll see come from your lot and finish level, not the city.
What does each ADU type cost in West Sacramento?
Price is driven first by type, because type decides how much new structure you build. The ranges below are West Sacramento-specific for 2026 — the regional market adjusted for this submarket's baseline build costs.
West Sacramento ADU cost by type — 2026 turnkey ranges
| ADU type | Typical size | $ / sq ft | Turnkey range |
|---|---|---|---|
| Detached ADU | 500–1200 sq ft | $250–$360 | $125,000–$432,000 |
| Garage Conversion ADU | 380–620 sq ft | $180–$280 | $68,400–$173,600 |
| Attached ADU | 450–850 sq ft | $240–$340 | $108,000–$289,000 |
| Junior ADU (JADU) | 220–500 sq ft | $200–$320 | $44,000–$160,000 |
| Multigenerational ADU | 600–1200 sq ft | $250–$370 | $150,000–$444,000 |
See also:Upside's published pricing · ADU builder in West Sacramento
What does an ADU cost per square foot in West Sacramento?
Smaller units cost more per foot — fixed costs like a kitchen, bath, utility hookup, and permit spread across fewer square feet. Here is a detached build at West Sacramento pricing.
West Sacramento detached ADU cost by size (2026)
| Size | Typical config | $ / sq ft | Estimated turnkey |
|---|---|---|---|
| 400 sq ft | Studio / JADU | $250–$360 | $100,000–$144,000 |
| 600 sq ft | 1 bedroom | $250–$360 | $150,000–$216,000 |
| 750 sq ft | 2 bedroom | $250–$360 | $187,500–$270,000 |
| 1000 sq ft | 2–3 bedroom | $250–$360 | $250,000–$360,000 |
What drives ADU cost up or down in West Sacramento?
West Sacramento build costs track the central-Sacramento baseline closely — the price differences you'll see come from your lot and finish level, not the city.
West Sacramento lots: Southport is newer, flatter, and built for a backyard unit. Broderick and the older grid carry detached garages and long parcels that read as conversion candidates first, ground-up builds second.
Local permitting: West Sacramento sits in Yolo County and permits through its own Community Development Department — a separate process from the City of Sacramento across the river. Standard 4 ft setbacks and 16 ft height apply; older Broderick lots often have detached garages well suited to conversion.
The single biggest cost lever is size: keeping a unit under 750 sq ft exempts it from local impact fees. Site conditions (slope, soil, utility runs) and finish level move the rest.
Know your West Sacramento budget — get an exact, all-in number for your lot.
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What will an ADU in West Sacramento rent for, and when does it pay back?
A typical West Sacramento ADU rents for $1,600–$2,700 a month in 2026. Bridge District growth and a quick commute to downtown Sacramento keep West Sacramento ADUs fast to rent, supporting reliable cash flow near the riverfront. Run your specific numbers with the calculator below, or see the full payback math in the ROI guide.
Tools & guides:ADU cost calculator · ROI & rent estimator · ADU rental income & ROI guide
How West Sacramento ADU cost compares across the region
West Sacramento sits in the Yolo County market. The regional baseline is central Sacramento; foothill and estate submarkets (El Dorado Hills, Granite Bay, Folsom) run highest, while Galt, Woodland, and Citrus Heights run lowest. For the full regional cost breakdown and methodology, see our Sacramento ADU cost guide, or compare every city on the ADU cost by city index.
Figures are 2026 West Sacramento-area market estimates, not a fixed quote. Your exact price depends on your lot, design, and finish level — we confirm it with a free feasibility check.
Sources & references
- Accessory Dwelling Units — official guidance — California Dept. of Housing & Community Development (HCD)
- City of West Sacramento Community Development Department — permits & fees — City of West Sacramento Community Development Department