







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Camarillo, CA
Fielding ADU Builders is the ADU company Camarillo homeowners call when a garage conversion, backyard unit, or room addition needs to be priced honestly and built to code. Camarillo’s housing stock runs from 1960s ranch homes near the 101 to newer developments east of the 23, and the soil, sun, and setback rules all shape what a project costs and how long it takes. If you’re weighing an ADU, a garage conversion, or an extra bedroom, call (361) 315-4177 and we’ll put the price in writing before any work begins.
Why Camarillo Homes Are Different

Camarillo sits on a coastal plain with warm, dry summers and cool, foggy mornings that roll in from the Pacific. That climate is easy on framing and siding, but it punishes poor flashing and cheap sealants. Many homes in the oldest parts of the city, particularly north of Las Posas Road and around Mission Oaks, were built in the 1960s and 1970s, so we regularly deal with undersized panels, older foundations, and framing that was not built for today’s living loads. A garage conversion on a 1968 house off Arneill Road often needs new shear wall and a service upgrade before finish work can start.
Ventura County enforces stricter energy and fire-resistance standards than many homeowners expect, and Camarillo’s planning department reviews every ADU for setbacks, lot coverage, and height limits. Some neighborhoods with HOAs add their own architectural review on top of the city permit, which can add weeks to a schedule. None of this is a surprise if you plan for it. We price for it, pull the permits in the right order, and do not show up later with a change order.
Our Main Camarillo Services
Most Camarillo homeowners reach us for one of three jobs: turning an attached garage into living space, building a detached ADU in the backyard, or adding square footage to the main house. Each has its own page with local pricing and permit detail.
Room Addition Contractor in Camarillo
A room addition in Camarillo usually means extending the rear or side of the house, and the first question is always how much the lot will allow. Setbacks on older R-1 lots are tight, and the city sometimes requires a variance, which is written permission to build closer to the property line than the standard rule allows. We handle that paperwork, the foundation work, and the roof tie-in, and every addition is covered by our one-year written guarantee. See Room Addition Contractor in Camarillo for full pricing.

Garage Conversion Contractor in Camarillo
Garage conversions are the fastest path to extra space in Camarillo because the structure and roof already exist. But pre-1980s garages often have slab foundations that were never intended for living space, and bringing them up to code means cutting for plumbing, adding insulation, and sometimes replacing the slab edge. We also coordinate with the city on the required replacement parking rule where it applies. Read the full breakdown at Garage Conversion Contractor in Camarillo.

ADU Builders in Camarillo
Backyard ADUs in Camarillo come in two forms: a prefab unit from a platform like Cover or Dvele, or a conventional stick-built unit with James Hardie siding. The prefab route can save months of site work, while a stick build gives you more control over the floor plan and roofline. We have built both, and we will tell you which one fits your lot and budget before you commit. Visit ADU Builders in Camarillo for the full range and local pricing.

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 Camarillo
We service and build on several ADU platforms Camarillo homeowners already research online, including our brands. For prefab work we commonly work with Cover, Dvele, and Mighty Buildings, and for conventional builds we specify James Hardie siding and Tuff Shed-style structures where they make sense.
Pricing for ADU Company in Camarillo, CA
| Service | Typical range in Camarillo |
|---|---|
| Attached ADU (garage conversion, 400 – 600 sq ft) | $130,000 – $210,000 |
| Detached ADU (new build, 400 – 600 sq ft) | $180,000 – $320,000 |
| Detached ADU (new build, 600 – 800 sq ft) | $250,000 – $420,000 |
| Prefab ADU (Cover, Dvele, or Mighty Buildings, 400 – 600 sq ft) | $160,000 – $290,000 |
| Room addition (200 – 400 sq ft) | $90,000 – $180,000 |
| Room addition (400 – 600 sq ft) | $140,000 – $260,000 |
| Room addition (600 – 800 sq ft) | $200,000 – $360,000 |
| Garage conversion (attached, with plumbing for bath) | $110,000 – $190,000 |
| Garage conversion (detached, with kitchenette) | $120,000 – $210,000 |
| Site work and utility trenching for detached ADU | $15,000 – $40,000 |
In Camarillo, the biggest price variables are soil conditions (some lots need deeper footings), the age of your electrical panel, and whether your lot triggers HOA review. The number we hand you in writing is the number on the final invoice. No change orders for conditions we should have caught in planning.
Neighborhoods We Serve in Camarillo

We work throughout Camarillo, from the established streets off Las Posas Road to the newer subdivisions up toward the 101. Most of our job sites fall in a handful of neighborhoods.
- Mission Oaks
- Las Posas Estates
- Springville
- Central Camarillo (near Arneill and Carmen)
- Village at the Park
Scheduling depends on which crew and which permit stage your project is in, but most Camarillo estimates are booked within three to five business days.
Service Area – Cities Near Camarillo
Our Camarillo crews also cover the surrounding communities in Ventura County. If you are a few miles out, we can often schedule an estimate within the same week. We serve Somis, CA, Oxnard, CA, Newbury Park, CA, and Santa Paula, CA.
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 ADU Company in Camarillo

Most estimates in Camarillo are scheduled within three to five business days. We coordinate local crews directly, so we do not have to wait on a remote dispatcher. Call (361) 315-4177 and we will put you on the calendar that week.
Every ADU, garage conversion, and room addition in Camarillo requires a city permit. We pull them, we build to the approved plans, and we close out the permit with the city. Unpermitted work is a liability if you ever sell or refinance.
Some Camarillo HOAs require architectural review before the city will issue a permit. That can add two to six weeks depending on the association’s meeting schedule. We identify that early in the estimate and build it into the timeline so it does not surprise you later. Call (361) 315-4177 for a free estimate on your Camarillo project.
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 Camarillo Customers Say
"Foundation and slab poured on schedule. Crew kept the yard orderly."
- Marian J."Garage conversion with a new bath and kitchenette. Permit was handled by them. Inspection passed first time."
- Sheila B."Honest feedback on what the lot could fit. Told me up front what would fit on the lot and what the setbacks would allow."
- Rita C.



