A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable ADU Builders Across Camarillo
For a homeowner in Camarillo, adding an accessory dwelling unit (ADU, or a small separate house on your existing lot) usually runs $180,000 to $420,000 for a detached build and $95,000 to $220,000 for a garage conversion, depending on size, site work, and the system you choose. Our crews work throughout Camarillo, from the older ranch neighborhoods near Las Posas Road to the newer subdivisions east of the 101, and we scope every job with a written price before any work starts. Call (831) 230-7250 and we’ll walk your lot, check the zoning, and give you a real number.
The Kingswell family has been building ADUs since 2010, and our Ventura team knows Camarillo’s R-1 lots, its hillside clay, and its permit process well enough to tell you on day one whether your backyard fits a two-bedroom unit or whether the rear-yard setback changes the floorplan. That local knowledge is the difference between a build that sails through inspection and one that stalls for three months. Dispatch and scheduling for our Camarillo crews are coordinated from the brand’s Los Angeles office, but the people who show up at your door live and work in Ventura County.
Why Lodgewick ADU Ventura Is Camarillo’s Preferred ADU Builders Company
Camarillo homeowners tend to ask the same two questions before they sign anything: will the price change once work begins, and will someone actually come back if something goes wrong. Our answer to both is written down. The Kingswell Guarantee puts a fixed price, a real arrival window, a clean job site, and a 365-Day Done Right Promise on paper before the first inspection is scheduled. If the work isn’t right within that year, we return and make it right at no charge. That’s not a slogan; it’s a clause in every Camarillo contract we write.
Our local reputation in Camarillo comes from crews who show up in uniform, background-checked, and who know the difference between a Mission Oaks hillside lot and a flat parcel near Adolfo Road. We’ve framed ADUs near Camarillo Heights, set prefab shells in the neighborhoods off Las Posas, and converted garages in the Spanish Hills area. Russ Delmar, who leads Lodgewick ADU Ventura, insists that every Camarillo homeowner get the same scope review, the same written line-item price, and the same direct phone line to a live person, 24 hours a day.
When you call about an ADU in Camarillo, you won’t reach a voicemail tree or a chatbot. You’ll talk to someone who can answer questions about R-1 zoning, foundation inspections for prefab units, and what a Title 24 energy sign-off actually costs on a Camarillo lot. That’s how we keep trust, one Camarillo project at a time.
ADU Contractor in Camarillo
An ADU Contractor in Camarillo handles the entire build from the first zoning check through the final inspection: soil evaluation, foundation, framing or panelized shell set, utilities, interior finish, and the Camarillo building department sign-off. Homeowners typically hire us in Camarillo when they need a rental unit, a place for an aging parent, or a home office that doesn’t require a move. A straightforward 500-square-foot studio ADU in Camarillo runs $180,000 to $260,000, while a larger two-bedroom detached unit with site work on a hillside lot can reach $360,000 to $420,000.
Scope and Permitting
Every Camarillo ADU needs a building permit, and the city’s plan check looks at zoning, setbacks, fire access, and Title 24 energy compliance. We pull permits on every project and coordinate all inspections. For a garage conversion, Camarillo also requires a pre-drywall inspection after framing and rough electrical, which means you can’t simply hang sheetrock and call it done.
Site Work and Foundations
On Camarillo’s flatter lots west of the 101, the foundation is often a straightforward slab on grade. East of Mission Oaks Park, where clay soil and steeper grades are common, we sometimes need deeper footings or small retaining walls. That’s a real cost driver we’ll identify in the written estimate before mobilization, not after excavation starts.
ADU Design in Camarillo
ADU Design in Camarillo starts with a zoning reality check, because the city’s R-1 lot-size formulas decide what you can build before aesthetics ever enter the conversation. On a standard R-1 lot under 20,000 square feet, Camarillo caps ADU size at 1,200 square feet; on larger lots, the allowance grows. Homeowners come to us in Camarillo after drafting a two-bedroom floorplan only to realize their rear-yard setback trims it to a one-bedroom. Design fees for a Camarillo ADU usually run $4,000 to $9,000 including plans, structural engineering, and the Title 24 energy calculation.
Zoning-First Layouts
We run the lot address through Camarillo’s zoning map before we sketch anything. That solves problems before they’re drawn. A Mission Oaks lot might allow a 1,000-square-foot unit where a Spanish Hills parcel only clears 700 square feet, and the difference changes roofline, bedroom count, and price.
Prefab vs. Custom Design
Camarillo homeowners often ask whether a panelized shell from Abodu or Dvele saves design time. It can, but the city still requires full architectural and structural submittals, plus a foundation design that matches the shell. We handle both paths and tell you honestly which one fits your lot and calendar.
Trusted Brands We Service in Camarillo
We work hands-on with several established ADU systems and materials, including Abodu, Dvele, Mighty Buildings, Boxabl, Cover, Plant Prefab, Tuff Shed, and James Hardie siding. That matters for Camarillo customers because not every lot suits every system. A Dvele panelized shell sets quickly on a flat lot near the 101, while a hillside parcel east of Mission Oaks often benefits from a custom-framed build with Hardie siding to handle moisture and fire-risk zones. We stock schedule parts locally for Camarillo jobs and can often pull a permit set together faster because we already know what the city’s plan check asks for on each brand’s submittal.
Common ADU Builders Problems We See in Camarillo Homes
- Designing before zoning. A homeowner drafts a two-bedroom ADU, pays for plans, then learns the R-1 lot size or rear-yard setback trims the unit to one bedroom. We check zoning first, always.
- Treating a prefab as a shed. Camarillo still requires a full foundation inspection, trench check, and Title 24 sign-off for a Boxabl or Abodu unit. Skipping the pre-construction permit meeting stalls at the first inspection.
- Underpricing hillside site prep. On older lots east of Mission Oaks Park, clay soil and grade changes push retaining walls and deeper footings past the original quote. We write site work into the first number.
- Missing the pre-drywall inspection. Camarillo requires an inspection after rough framing and electrical but before drywall on a garage conversion. Hire a contractor who doesn’t know this and the project stops cold.
Pricing for ADU Builders in Camarillo, CA
A detached studio ADU in Camarillo typically runs $180,000 to $260,000. A two-bedroom detached unit runs $300,000 to $420,000 depending on hillside earthwork and finish level. A garage conversion generally lands between $95,000 and $220,000. Attached JADUs (junior accessory dwelling units, or smaller units built within an existing home) run $70,000 to $140,000. What changes the price most in Camarillo is lot grade, foundation depth, utility trench length, and whether the city requires fire sprinklers, which adds roughly $8,000 to $15,000 for a detached unit. We’ll give you a written line-item price for your specific Camarillo address at no charge. Call (831) 230-7250 to schedule the estimate.
We Also Serve Cities Near Camarillo
Our crews serve all of Camarillo and also take on ADU projects in ADU Builders in Camarillo and the surrounding communities of Somis, Oxnard, Newbury Park, and Santa Paula. If you’re just outside the Camarillo city line, call us at (831) 230-7250 and we’ll confirm coverage and schedule a free lot walk.
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 Builders in Camarillo
Yes. Camarillo treats an attached conversion and a detached new build as two different permit paths, even though both fall under the city’s ADU ordinance. An attached garage conversion follows the existing structure’s permit route with a pre-drywall inspection, while a detached unit requires a full new-construction permit including foundation, utilities, and Title 24. The permit fees differ, and the plan check review time is usually longer for the detached path. Call (831) 230-7250 for a written scope breakdown for your Camarillo lot.
Because Camarillo’s building code treats the foundation as a separate structural element even when the unit above it arrives factory-built. The city inspects the slab, anchor bolts, and utility stub-outs before the Boxabl shell is set. Skipping that inspection means the entire unit gets red-tagged until the foundation is exposed and re-inspected. We schedule the foundation inspection before the shell arrives on any Camarillo prefab project.
A standard R-1 lot under 20,000 square feet in Camarillo caps ADU size at 1,200 square feet. Near Mission Oaks Park, where many lots sit on hillsides, the rear-yard setback and slope often reduce the buildable footprint further, so a 1,200-square-foot allowance might shrink to 800 or 900 usable square feet. We calculate that before design begins, not after. Call (831) 230-7250 and we’ll run your address.
Camarillo requires a pre-drywall inspection after the framing, rough plumbing, rough electrical, and insulation are complete but before any gypsum board goes up. The inspector checks wall assembly, fire blocking, and any required shear reinforcement. If drywall is hung first, the city can require removal. Our crews schedule this inspection as a fixed milestone in every Camarillo garage conversion.
It depends on the unit’s distance from the main house, access for fire vehicles, and whether the primary residence already has sprinklers. Many detached ADUs in Camarillo trigger the sprinkler requirement when the lot is deep or on a hillside with limited access. Budget $8,000 to $15,000 if sprinklers are required. We’ll confirm the requirement during the zoning and permit review. Call (831) 230-7250 for a free Camarillo estimate.
Get a Written Price Before You Decide
If you’re weighing an ADU in Camarillo, start with the lot, not the brochure. We’ll send a crew to walk your property, check the R-1 zoning math, test the grade, and hand you a written line-item price. No verbal ballpark that drifts later. No price change at the door. Just the number, the calendar, and the Kingswell Guarantee in writing. Russ Delmar and the Lodgewick ADU Ventura team answer calls live at (831) 230-7250. Call today and we’ll schedule your free Camarillo estimate.
Written by Russ Delmar, Owner at Lodgewick ADU Ventura, serving Camarillo since 2010.
