Loomis, CA · Placer County
Detached ADU in Loomis
Upside ADU builds detached adus in Loomis, Placer County, for a $1,000 deposit with transparent fixed pricing and inspection-tied payments. A typical Loomis detached adu runs $131,250–$453,600 all-in, and we permit it through the Town of Loomis / Placer County Building Division end to end.
Loomis rules that affect a detached adu
Loomis's mix of lots leaves room for a standalone backyard unit with its own entrance, kitchen, and bath — the highest-value, most-rentable ADU type. The Town of Loomis / Placer County Building Division reviews detached builds on the standard 60-day clock.
Local permitting: Loomis reviews ADUs through the Town of Loomis with Placer County building support. Rural-residential zoning means larger minimum lots, frequent septic and well systems, and tree-protection review — all of which we scope before pricing a detached build.
That's the detached adu-specific picture. For the full Placer County rulebook — every setback, height, and owner-occupancy detail — see our Sacramento-region ADU rules guide, and learn how the build type works statewide on our detached adu page.
Why Loomis homeowners pick Upside
- $1,000 deposit — the CA legal max
- Inspection-tied milestone payments
- We know the Town of Loomis / Placer County Building Division process
- Transparent, all-in Loomis pricing
- Property-manager referral when you rent
Loomis detached adu cost snapshot
A fully independent dwelling in your backyard with its own entrance, kitchen, and bath. Detached ADUs add the most property value and command the highest rents of any ADU type. In the Placer County market that prices out to about $263–$378 per square foot, or $131,250–$453,600 for a finished, permitted unit. A typical Loomis detached adu rents for $1,700–$2,700 a month.
| Size | Typical use | Loomis all-in cost (2026) |
|---|---|---|
| 500 sq ft | Studio / 1-bed, max cash-on-cash | $131,250–$189,000 |
| 850 sq ft | 1–2 bed, most popular | $223,125–$321,300 |
| 1200 sq ft | 2–3 bed / multigen, max value | $315,000–$453,600 |
Dial in your own number with the ADU cost calculator.
Estimate your ADU
Ballpark 2026 turnkey cost, financing, and rental return for your area.
Estimated turnkey cost
$263–$378 / sq ft · incl. design, permits & construction
Estimates only — 2026 regional ranges, not a bid. Your real price depends on site conditions, finishes, and your lot. We confirm with a free feasibility check.
Detached ADU projects in Loomis
Loomis lots suit a guest house as readily as a rental — acre-plus parcels in central Loomis and toward Penryn give privacy to spare for a detached unit. Septic, well, and tree-protection review come standard on rural-residential parcels here. Every detached adu is fixed-price, funded on inspection-passed milestones, and backed by our written guarantee.
Browse finished builds and specs in our ADU project gallery.
Detached ADU in Loomis — FAQs
A detached adu in Loomis typically runs $131,250–$453,600 turnkey in 2026, based on $263–$378 per square foot for the Placer County market. We confirm your exact number with a free feasibility check.
Loomis detached adu permits are handled by the Town of Loomis / Placer County Building Division. Loomis reviews ADUs through the Town of Loomis with Placer County building support. Rural-residential zoning means larger minimum lots, frequent septic and well systems, and tree-protection review — all of which we scope before pricing a detached build. We prepare and submit the full package and manage inspections.
A detached adu in Loomis rents for about $1,700–$2,700 a month in 2026 depending on size and finish. Loomis's premium rural-residential character supports higher-end finishes and strong resale value, so the play leans toward guest homes and value-add over pure cash flow.
A detached ADU in the Sacramento region typically runs $165,000–$500,000 in 2026, or roughly $250–$360 per square foot turnkey (design, permits, and construction included). A 750 sq ft 2-bed/1-bath lands around $230,000–$300,000 at mid-range finishes.
State law allows detached ADUs up to 1,200 sq ft. Units under 750 sq ft are exempt from impact fees, which is why many Sacramento homeowners build right at that threshold for the best cost-per-rental-dollar.
Plan on about 6–9 months end to end: 2–6 weeks design, 4–10 weeks permitting (as fast as 30 days with pre-approved plans), and 12–16 weeks construction.
Detached ADU near Loomis
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Not sure which type fits your lot? See all ADU services in Loomis or compare every build type on our ADU services hub.
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