







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Garage Conversion Contractor Across Camarillo
A garage conversion in Camarillo typically runs $85,000 to $160,000 before permit fees, depending on whether you’re doing a straight garage-to-bedroom conversion or a full ADU with a kitchen and bath. Most projects in Camarillo take 12 to 20 weeks from permit submission to final inspection, and the city’s ministerial ADU approval path means you won’t sit through months of discretionary design review. We coordinate schedules around Camarillo’s Building & Safety plan check, and our crews work from the Mission Oaks area to the Santa Rosa Valley.
If you’re pricing a garage conversion, call (361) 315-4177. We’ll give you a written price before any work starts, and we’ll show up at the inspection with permits posted on the board. Reed Calloway, our owner, signs off on every Camarillo project estimate himself.
Why Fielding ADU Builders Is Camarillo’s Preferred Garage Conversion Contractor Company

The Garrison Standard has been the operating rule at Fielding ADU Builders since 2006. We’re an independently owned member of the Garrison Partners family, and in Camarillo that means one thing for your garage conversion: a written price in your hands before a single nail is driven, permits pulled by the book, and a one-year written guarantee on every project we finish. If something fails inside those 365 days, we come back and correct it at no charge.
Camarillo homeowners have already dealt with contractors who moved the price at the door or left the permit board blank. We hear it on nearly every estimate visit in the Mission Oaks and Las Posas Estates neighborhoods. Our answer is to put the number in writing up front and to send a background-checked, uniformed crew to the job. You know exactly who is on your property.
We also answer the phone with a live person 24 hours a day. Call (361) 315-4177 at noon or midnight and someone picks up. No voicemail, no callback queue. For a Camarillo homeowner trying to line up quotes, that alone usually tells you how the rest of the project will go.
Garage to Bedroom Conversion in Camarillo
A garage-to-bedroom conversion in Camarillo commonly runs $45,000 to $75,000 when you keep the work to a single habitable room with a closet and egress window, and skip the kitchen or bath. That price covers insulation, drywall, flooring, electrical, a mini-split or ducted tie-in, fire separation at the shared house wall, and Title 24 compliance. Homes in the tract neighborhoods between Las Posas Road and Arneill Road, many built in the 1960s and 1970s, usually need more insulation work than newer construction, which moves the number toward the top of that range.
The job involves raising or replacing the garage door opening with a framed wall, bringing the slab to a level surface, insulating to current Title 24 standards, and adding a permitted egress window. Camarillo’s clay-heavy soils push moisture up through older slabs, so we always test before we lay flooring. Skip that test and you’ll have buckling laminate inside a year.
Attached Garage Conversions
Attached garage conversions in Camarillo are the most common type we see, because the shared wall with the house simplifies the mechanical and electrical rough-in. The trade-off is fire separation: the code requires a specific fire-rated assembly at the house wall, and pre-1980 garages almost always need upgrades to meet it.
Detached Garage Conversions
Detached garages take more work to bring utilities to – running a new electrical feeder, water and sewer lines if you’re adding a bath – but they offer cleaner separation and better privacy as a bedroom or home office. On standard Camarillo lots, detached structures usually sit at the rear of the parcel off the alley, which makes access for trenching simpler than on tight side-yard lots.
Garage Conversion ADU in Camarillo

A garage conversion ADU in Camarillo typically runs $95,000 to $160,000 before permit fees, depending on whether the unit is a studio or one-bedroom and whether the existing garage slab and electrical service can be reused. The city’s ADU ordinance under its certified Local Coastal Program and General Plan allows conversions without discretionary design review, so the project turns on the Building & Safety plan check and standard ministerial approvals, not a long entitlement process.
That’s a meaningfully faster path than neighboring Ventura or Oxnard, where some projects still trigger discretionary review. In Camarillo, a clean ADU conversion can be permitted in as little as 4 to 8 weeks if plans are complete. The rest is construction time.
Garage ADU Scope and Details
Every ADU conversion starts with a site check on zoning and setback compliance, then a structural review of the existing garage. Most pre-1980 Camarillo garages need added insulation, a raised ceiling if the original is under 7 feet 6 inches, and an electrical service upgrade – a 100-amp panel is common in these homes, and a kitchen plus mini-split plus water heater routinely exceeds that.
Garage Apartment Conversion
When the ADU will be rented, we treat it as an apartment build: separate address, separate utility meters where the utility allows, sound attenuation at shared walls, and a fire-rated separation from the main house. Camarillo’s rental market supports these units strongly, especially near the 101 corridor, and we’ve seen homeowners recoup the cost through rent within six to eight years.
Trusted Brands We Service in Camarillo
We work with leading prefab and modular ADU platforms including Cover, Dvele, and Boxabl, and we pair them with conventional builds using James Hardie siding when the lot and budget call for it. For Camarillo homeowners, the advantage is straightforward: if your garage conversion is a good fit for a prefab shell, you can cut weeks off the framing schedule and keep the building inspector visit count down. We stock common finish materials locally and coordinate deliveries around Camarillo’s building inspection calendar so a missing part doesn’t stall a scheduled inspection.
Common Garage Conversion Contractor Problems We See in Camarillo Homes
- Untreated slab floors. Camarillo’s clay-heavy soils and winter groundwater push moisture up through garage slabs, and a floor laid directly on an untreated slab fails fast. We always test for moisture and level first.
- Undersized electrical panels. The original 100-amp service on a 1960s or 1970s Camarillo home was sized for a garage door opener and two outlets. Add a kitchen, mini-split, and water heater and you need a panel upgrade before the inspector will sign off.
- Insufficient ceiling height and insulation. Most pre-1980 Camarillo garages have a ceiling under 7 feet 6 inches and no insulation, which fails the habitable-space requirements in the California Building Code and Title 24. A raised ceiling and full insulation package are usually required.
- Setback encroachments. Even though Camarillo is ministerial for many ADU conversions, a garage that sits too close to the side property line can trigger a variance, and that stalls the project. We confirm setback compliance before plan submittal.
Pricing for Garage Conversion Contractor in Camarillo, CA
Here are the real ranges we see in Camarillo, before permit fees and any required upgrades to the existing slab or electrical service:
| Project Type | Typical Range |
|---|---|
| Garage to bedroom (single room, no bath) | $45,000 – $75,000 |
| Garage to living space (with half bath) | $60,000 – $90,000 |
| Garage conversion ADU (studio) | $95,000 – $130,000 |
| Garage conversion ADU (one-bedroom) | $110,000 – $160,000 |
What moves the number: whether the slab passes a moisture and level test, whether the panel needs an upgrade from 100 to 200 amps, whether the ceiling needs to be raised, and whether a prefab system like Cover or Boxabl fits the lot. We put all of that in writing before work starts. Call (361) 315-4177 and we’ll walk the garage with you free.
We Also Serve Cities Near Camarillo
Our crews serve Camarillo and the surrounding areas, including Somis, Oxnard, Newbury Park, and Santa Paula. If you’re just outside the city line, we can still help – our Garage Conversion Contractor team schedules work across the Camarillo Plain and coordinates dispatch from our metro office. For a full picture of what we do, see our Garage Conversion Contractor in Camarillo page.
Serving Camarillo, CA - Our Local Coverage Area
We’re based in the Camarillo 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 Garage Conversion Contractor in Camarillo
Yes. Every garage conversion in Camarillo requires a building permit through the city’s Building & Safety division, and any ADU conversion must also go through the ministerial ADU approval path under Camarillo’s certified Local Coastal Program. We pull all permits on your behalf and post them on the board for every inspection. Call (361) 315-4177 if you want a written quote.
Most garage conversions in Camarillo take 12 to 20 weeks from permit submission to final inspection. Clean projects with no setback variance and a reusable slab land on the shorter end. A panel upgrade, raised ceiling, or moisture remediation moves it toward the longer end.
The biggest cost drivers are the condition of the slab, the electrical panel, ceiling height, and whether the garage’s existing framing can carry the new roof and insulation loads. A slab that needs self-leveling underlayment, a 100-amp panel that needs to go to 200, and a ceiling that needs raising can add $15,000 to $30,000 to the total. We write all of this into the estimate before you sign. Call (361) 315-4177 for a free walk-through.
Yes, and many Camarillo homes from that era are good candidates because the city’s ministerial ADU path doesn’t force a discretionary design review. The work usually includes adding insulation, upgrading the panel, and sometimes raising the ceiling, but the project is straightforward once those are scoped. We’ve completed conversions on 1960s detached garages in Mission Oaks and Las Posas Estates without a single variance hearing.
Generally no. When a garage is converted to an ADU, California state law and Camarillo’s ADU ordinance do not require replacement parking on the lot, but the structure must still comply with existing side-yard and rear-yard setback rules. We verify setback compliance during the site check, before plan submittal. Call (361) 315-4177 to have us check your property.
Get a Written Price Before Any Work Starts

If you’re serious about converting a garage in Camarillo, the first step is a site visit. Reed Calloway or one of our project leads will walk the garage, check the slab, panel, ceiling, and setbacks, and hand you a written line-item price. No verbal guess. No price change at the door. The number you approve on day one is the number on the final invoice.
Call (361) 315-4177 now to schedule your free estimate. The Garrison Standard covers workmanship defects for 365 days, and if something fails, we come back and make it right at no charge.
Written by Reed Calloway, Owner at Fielding ADU Builders, serving Camarillo with garage conversion, ADU, and room addition work since the company’s founding in 2006.



