Loomis, CA · Placer County
Junior ADU (JADU) in Loomis
Upside ADU builds junior adu (jadu)s in Loomis, Placer County, for a $1,000 deposit with transparent fixed pricing and inspection-tied payments. A typical Loomis junior adu runs $46,200–$168,000 all-in, and we permit it through the Town of Loomis / Placer County Building Division end to end.
Loomis rules that affect a junior adu
A junior ADU stays inside your existing Loomis home (up to 500 sq ft) with an efficiency kitchen and its own entrance, so it skips most setback and site-work questions. Note that JADUs carry an owner-occupancy requirement, which we confirm against Placer County rules.
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 junior 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 junior adu (jadu) 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 junior adu cost snapshot
A Junior ADU is up to 500 sq ft created within the walls of your existing house — often a converted bedroom with an efficiency kitchen. It's the lowest-cost way to add a legal rental, and you can pair one with a detached ADU on the same lot. In the Placer County market that prices out to about $210–$336 per square foot, or $46,200–$168,000 for a finished, permitted unit. A typical Loomis junior adu rents for $1,700–$2,700 a month.
| Size | Typical use | Loomis all-in cost (2026) |
|---|---|---|
| 220 sq ft | Studio / 1-bed, max cash-on-cash | $46,200–$73,920 |
| 360 sq ft | 1–2 bed, most popular | $75,600–$120,960 |
| 500 sq ft | 2–3 bed / multigen, max value | $105,000–$168,000 |
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
$210–$336 / 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.
Junior 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 junior 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.
Junior ADU (JADU) in Loomis — FAQs
A junior adu (jadu) in Loomis typically runs $46,200–$168,000 turnkey in 2026, based on $210–$336 per square foot for the Placer County market. We confirm your exact number with a free feasibility check.
Loomis junior adu (jadu) 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 junior adu (jadu) 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 Junior ADU is a unit up to 500 sq ft created inside your existing home's footprint, with its own entrance and an efficiency kitchen. JADUs can share a bathroom with the main house and, unlike standard ADUs, may carry an owner-occupancy requirement.
Junior ADU (JADU) near Loomis
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