Placer County, California
ADU Builder in Loomis
Upside ADU is a Loomis ADU builder serving all of Placer County. We design, permit, and build all 5 ADU types — detached, garage conversion, attached, junior, and multigenerational — for a $1,000 deposit, with transparent fixed pricing. Permits run through the Town of Loomis / Placer County Building Division, which we handle end to end.
Your Loomis ADU builder — from design to move-in
Premium rural-residential character supports higher-end ADU finishes and strong resale value.
We build every type of ADU in Loomis with one transparent, all-in price and a $1,000 deposit — the California legal maximum — then tie the rest of your payments to inspection-passed milestones so money only moves when verified work is done. When it's ready to rent, we'll connect you with a trusted local property manager.
Loomis lots: Acre-plus semi-rural parcels give plenty of room for spacious, private detached ADUs and guest houses.
Popular Loomis areas: Central Loomis, Penryn area.
- $1,000 deposit — the CA legal max
- Inspection-tied milestone payments
- All 5 ADU types built here
- Property-manager referral when you rent
Loomis ADU rules & limits
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.
Statewide, every Loomis ADU under 750 sq ft is exempt from impact fees, detached units can reach 1,200 sq ft, and no replacement parking is required when you convert a garage. For the full Placer County rulebook — setbacks, height, and owner-occupancy by ADU type — see our Sacramento-region ADU rules & setbacks guide.
ADU services in Loomis
Loomis ADU cost & ROI
Loomis ADUs run about $131,250–$453,600 all-in in 2026, and a typical unit rents for $1,700–$2,700 a month. 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.
See the full Loomis ADU cost breakdown by type and size, run your own numbers with the ADU cost calculator, or see the full payback and rent-comp math in our ADU rental income & ROI guide.
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.
Permitting & timeline in Loomis
Loomis ADU permits are issued by the Town of Loomis / Placer County Building Division. California law requires a decision within 60 days of a complete submittal, and pre-approved plan sets can shorten review to about 30 days. We prepare the full package, pull the permit, and manage every inspection so you never stand in line at a counter.
Plan on roughly 6–9 months end to end for a detached build: about 2–6 weeks of design, 4–10 weeks of permitting, and 12–16 weeks of construction. Garage conversions and junior ADUs move faster.
The Upside Guarantee
Your money is protected at every step
Sacramento homeowners were burned by builders who took huge deposits and vanished. We built Upside to be the opposite — structured so you're protected before, during, and after the build.
$1,000 down — the legal maximum
California caps a contractor's down payment at $1,000 or 10% of the contract — whichever is less. On an ADU that's $1,000, not the 30–50% other builders demanded. Everything after is earned.
Inspection-tied milestone draws
After the deposit you pay in defined draws — design, permit, foundation, framing, MEP, drywall, completion — each released only after that phase passes inspection.
Honest capacity & timelines
We only take on work we can actually deliver, with realistic schedules and references to completed local projects you can visit.
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 build is fixed-price, inspection-milestone funded, and backed by our written guarantee.
See completed builds, specs, and before-and-after photos in our Sacramento-region ADU project gallery.
ADUs in Loomis — FAQs
Most Loomis ADUs cost $131,250–$453,600 in 2026 depending on size and type, or roughly $263–$378 per square foot. A 750 sq ft detached unit runs about $196,875–$283,500 turnkey, with design, permits, and construction included.
Loomis ADU permits run through 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.
A typical Loomis ADU rents for about $1,700–$2,700 a month in 2026, with detached and larger units at the top of that range. 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.
We're an ADU builder, not a property manager — but once it's built we'll connect you with vetted Placer County property managers we trust to lease and run it for you. Plenty of owners self-manage instead.
Nearby service areas
Popular ADU models
Costs & rules in Loomis
Start your Loomis ADU
Get a transparent quote and a free feasibility check for your Loomis lot.