A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Loomis, CA
Loomis occupies a rare position among Sacramento-area towns: it’s still mostly rural, still mostly quiet, and still governed by Placer County rather than its own city council. That matters for ADU work. The lots run large, the wells and septic systems are private, and the zoning rules read differently here than they do ten minutes down the road. If you’re planning an accessory dwelling unit on your Loomis property, you need a builder who understands county permitting, septic capacity evaluations, and the wide-open site conditions that make Loomis jobs feel more like custom rural builds than standard suburban infill. Call (279) 300-1690 to talk through your property.
Why Loomis Homes Are Different
Most Loomis homes sit on parcels measured in acres, not square feet. A typical property here was built between the 1970s and 1990s, often as a ranch-style or custom home with room for horses, outbuildings, and mature oak trees. The older the home, the more likely you’re dealing with a septic system that predates modern ADU rules, which means your project may need an environmental health review before a permit is issued. That’s a step most suburban ADU builders never see.
Placer County also manages Loomis permitting, and the county requires a septic system capacity evaluation when you add a second dwelling to a property served by one. Well setbacks come into play too – your ADU has to sit a minimum distance from the wellhead, and from any leach field, and from the barn or horse facility that many Loomis lots still have. Add in the local climate – hot, dry summers where cooling matters more than heating, plus the persistent wildfire risk of the foothills – and you get a build that needs different decisions than a backyard cottage in Rocklin or Lincoln. Homes here wrap around the land, and your ADU should too.
Our Main Loomis Services
Loomis homeowners call us for three things most often: adding square footage onto an existing house, building a fully separate backyard ADU, or converting an existing room or wing into something genuinely livable. Each job below has its own dedicated Loomis page with full pricing detail.
Home Addition Contractor in Loomis
A home addition in Loomis means extending plumbing, HVAC, and often electrical into a new footprint attached to a house that was built decades before current codes. Many additions we see here trigger septic reconsideration too, because the county counts added bedrooms when evaluating system capacity. Older ranch-style homes with pier-and-post foundations need careful tie-in work, and that changes the framing plan. If you want more detail on how this works on your kind of lot, visit our Home Addition Contractor in Loomis page.
ADU Builders in Loomis
Detached ADUs in Loomis often meet a set of questions no subdivision ever asks: which direction does the land slope, where is the closest oak tree’s root zone, how far can the structure sit from an existing horse pasture or barn, and whether the septic system has capacity for a second bathroom and bedroom. The agricultural zoning on many Loomis parcels can allow a larger ADU than nearby cities permit, but only if placement is right. The full picture is on our ADU Builders in Loomis page.
Room Addition Contractor in Loomis
Room additions often mean reworking an existing single-family home for a parent, an adult child, or a working-from-home situation the original floor plan never anticipated. In Loomis, we frequently see additions that touch older electrical panels and outdated truss framing, both of which need to be brought to current standard. Fire-resistant exterior materials are a recurring recommendation given the foothills location. Our Room Addition Contractor in Loomis page walks through scoping and pricing in detail.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Loomis
We work with Abodu and Cover prefab systems on many Loomis projects, plus Dvele for homeowners who want a higher-performance building envelope. Each comes with different septic and foundation needs on rural lots, which is exactly where our experience helps. See our brands for the full list and what each product line does well.
Pricing for ADU Company in Loomis, CA
| Service | Typical range in Loomis |
|---|---|
| Detached ADU, 400 – 600 sq ft | $180,000 – $260,000 before site work |
| Detached ADU, 600 – 900 sq ft | $220,000 – $320,000 before site work |
| Detached ADU, 900 – 1,200 sq ft | $280,000 – $400,000 before site work |
| Garage conversion to ADU | $130,000 – $210,000 depending on existing structure |
| Primary suite addition | $140,000 – $240,000 |
| Secondary bedroom or bedroom set addition | $110,000 – $190,000 |
| Living room or family room addition | $100,000 – $180,000 |
| Second-story addition, one room | $160,000 – $250,000 |
| Home office addition, detached or attached | $90,000 – $180,000 |
| In-law suite / junior ADU | $120,000 – $200,000 |
Loomis pricing moves when the county requires septic upgrades, well relocation analysis, or significant site grading – all three are common on larger, sloped, or heavily treed lots here. Whatever the final number, you get a written price before any work begins, and that price does not change unless you change the scope.
Neighborhoods We Serve in Loomis
We work across Loomis and the surrounding unincorporated areas of western Placer County. Crews typically reach any Loomis address within the same workday of a scheduled visit.
- Downtown Loomis and Taylor Road corridor
- Penryn area
- Rural Loomis east of Sierra College Boulevard
- Horseshoe Bar Road properties
- Lake Forest and surrounding hillside parcels
Service Area – Cities Near Loomis
Beyond Loomis, our Placer and Sacramento County service area includes Rocklin, CA, Lincoln, CA, Orangevale, CA, and Rancho Cordova, CA. Each area has its own page covering local conditions, pricing, and what to expect from the crew.
Serving Loomis, CA - Our Local Coverage Area
We’re based in the Loomis area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About ADU Company in Loomis
Most Loomis appointments are scheduled within a few business days of your call. Scheduling is coordinated from our Sacramento office, but crews are dispatched locally to Loomis. For exact availability, call (279) 300-1690.
Yes. Loomis is unincorporated, so Placer County handles all building and environmental health permits. Septic evaluations, well setbacks, and fire-safe siting are standard parts of the process, which is why local experience matters. We handle the permit path on every project.
No. Your written price is fixed before work begins. The only thing that changes it is a change you request. If something was built wrong, our 365-Day Done Right Promise covers a free second visit to make it right. Call (279) 300-1690 for a written estimate on your Loomis property.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Loomis Customers Say
"Great build and clear weekly updates. Plumbing inspection got pushed a week because of the city, which wasn't their fault, but it set us back a bit."
- Lucia P."Detached unit with a small kitchen and bath. Windows and finishes were nicer than I expected for the budget."
- Philip S."Garage conversion into a studio. They framed the insulation, added a mini split, and matched the siding. Inspectors passed everything on the first visit."
- Andrew K.
