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 Orange
A garage conversion in Orange typically runs $85,000 – $135,000 for a full ADU with kitchen and bath, and $45,000 – $70,000 for a simpler living-space conversion without plumbing. Those are the numbers we put in writing before you sign anything. We’re Fielding ADU Builders, a Garage Conversion Contractor serving Orange, Villa Park, the neighborhoods around Old Towne, and the streets off Chapman and Tustin Avenue. Our crews know Orange’s older housing stock, its permit desk quirks, and what it actually takes to turn a 1950s garage into a legal, comfortable living space. Call (361) 315-4177 and we’ll walk you through scope, cost, and timeline in plain English.
Why Fielding ADU Builders Is Orange’s Preferred Garage Conversion Contractor Company
Homeowners in Orange call us because they want the number on day one to match the number on the final invoice. That’s how Garage Conversion Contractor work should go. We hand you a written price before any work starts, and every project carries the Garrison Standard guarantee: workmanship defects are covered in writing for 365 days. If something fails, we return and correct it at no charge. That’s not marketing language. That’s the deal, on paper, every time.
Our crews arrive background-checked and in uniform. You know exactly who’s on your property on any given morning. When you call, a live person answers – noon or midnight – not a voicemail queue. For Orange homeowners who’ve dealt with contractors that vanished mid-project or moved the price at the door, that alone changes how the whole job feels.
Reed Calloway runs the Fielding team, and he holds every project to the same standard: show up in the window, price in writing, permit by the book, leave it clean, and stand behind it for a year. That’s the Garrison Code. It’s how we’ve kept homeowners in Orange from getting burned twice.
Garage Conversion ADU in Orange
Garage Conversion ADU work in Orange means taking an existing attached or detached garage and converting it into a legal accessory dwelling unit with its own entrance, kitchen, bath, and sleeping area. For most Orange homeowners, this is the fastest path to a rentable unit or a private space for an aging parent or adult child without building from the ground up. Expect to spend $85,000 – $135,000 depending on the condition of the existing structure and what the City of Orange requires for setbacks, parking replacement, and utility separation.
Older Garage Walls and Slabs
Orange’s pre-1960 garage stock commonly has single-wall or unbraced construction and undersized slabs. Converting one usually means structural upgrades and a slab evaluation before anything cosmetic happens. We scope that work from the start, not after the drywall comes down.
ADU Parking and Zoning Review
The City of Orange publishes ADU handouts that differ from neighboring cities on what converts by-right. Some lots need a parking replacement plan. Some need setback review. We coordinate that review as part of the written scope, so you’re not surprised three weeks into the job.
Garage Apartment Conversion in Orange
Garage Apartment Conversion in Orange is the version of this project with a separate address, a dedicated utility meter where the city requires it, and a fully independent living setup. It’s what we did on North Cambridge Street, where we converted a detached two-car garage into a one-bedroom garage apartment without changing the footprint. The original slab had a shallow footing at the rear corner, so our crew upgraded the perimeter framing, added a continuous footing, and ran plumbing and electrical rough-in through the City of Orange permit and inspection sequence. Final scope: full kitchenette, 3/4 bath, mini-split, separate address for billing.
Separate Meter and Address
A garage apartment conversion often requires a separate utility meter so the tenant or family member gets their own bill. Orange reviews this as part of the ADU permit package. We coordinate with the utility and the city so the numbering and metering are set before final inspection.
Keeping the Footprint
When the garage sits within legal setbacks, keeping the original footprint is the cheapest path. It avoids foundation work for new square footage and typically shortens the permit review. But it still depends on what’s under the slab. We evaluate that early.
Trusted Brands We Service in Orange
Orange homeowners ask us about prefab garage ADU options from Cover, Dvele, and Mighty Buildings, and we’re fluent in all three. For the right lot and budget, a prefab shell can cut weeks off the timeline compared to conventional framing. We also do conventional builds with James Hardie siding and Tuff Shed-style structures, matching the method to the lot, the setback rules, and the condition of the existing garage. The same Orange service area applies either way, and we keep local parts and material lead times front of mind when we scope the job.
Common Garage Conversion Contractor Problems We See in Orange Homes
- Cosmetic-only scoping. A homeowner gets a low bid for drywall, flooring, and paint, then the walls open and the framing isn’t braced and the slab isn’t thick enough. The price jumps. We scope structure first so that doesn’t happen.
- Skipping Orange’s ADU-specific review. Some contractors treat a garage conversion like a standard room addition. Orange reviews setbacks, parking replacement, and ADU zoning separately. Missing that step changes the design and the timeline after plans are checked.
- Internet per-square-foot pricing. Generic national numbers don’t account for Orange’s permit fees, utility connection costs, or the reality of older garage slabs. We price from local conditions, not blog averages.
- Shallow footings on older detached garages. Orange has plenty of detached garages poured with footings that were fine for parking a car in 1958 but aren’t adequate for living space. We evaluate and upgrade where needed before framing proceeds.
Pricing for Garage Conversion Contractor in Orange, CA
Here are honest Orange market ranges. A garage-to-living-space conversion without plumbing or a kitchen runs $45,000 – $70,000. A full garage ADU with kitchen, bath, and separate entrance runs $85,000 – $135,000. A garage apartment conversion with separate utility metering and address falls toward the top of that range, typically $110,000 – $140,000. Structural upgrades for older Orange garages – continuous footings, wall bracing, slab thickening – add $8,000 – $20,000 depending on what’s uncovered. Permit fees, utility connection, and parking replacement requirements are line items in your written quote, not surprises. Call (361) 315-4177 and we’ll send a written estimate for your specific garage and lot.
We Also Serve Cities Near Orange
Fielding ADU Builders works across north Orange County. In addition to Orange, our crews serve Santa Ana, Tustin, Garden Grove, and Placentia. If you’re in a neighboring city and looking at a garage conversion or ADU, call and we’ll send someone to scope it. Schedules and permit lead times vary by city, and we’ll be straight with you about the difference.
Serving Orange, CA - Our Local Coverage Area
We’re based in the Orange 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 Orange
Yes. The City of Orange treats a garage conversion ADU as a separate dwelling unit, which means it needs a full bathroom and a kitchen with a cooking facility, not just a wet bar. That’s part of what drives the permit classification and the cost. Call (361) 315-4177 and we’ll walk you through exactly what the city requires for your lot before you commit to anything.
Yes, in many cases. Orange allows partial garage conversions where the ADU occupies part of the footprint and the remainder stays as storage or a single parking bay, if your lot meets the parking replacement rules. The key is that the two spaces need a proper fire separation and separate access. We scope it as a partial conversion on the plans so the permit matches reality. Call (361) 315-4177 for a site assessment.
Unbraced walls, undersized slabs, shallow footings, and the need to upgrade the electrical service to handle a new kitchen and mini-split. Those are the common drivers on Orange’s older garage stock. That’s why we evaluate structure and slab before we price the cosmetic work, so the number you approve is the number you’re paying at the end. Call (361) 315-4177 and we’ll price it from the actual conditions, not a guess.
Plan check and permitting for a garage conversion in Orange typically runs 6 to 10 weeks depending on the complexity and whether the lot needs zoning or parking review. Construction for a full ADU conversion runs 3 to 5 months. Partial conversions go faster. We pull the permits and pass the inspections for you. Call (361) 315-4177 and we’ll give you a realistic calendar for your specific scope.
If you’re renting the unit or want utility separation, yes in most cases. Orange reviews address assignment and metering as part of the ADU permit. A garage apartment conversion with a separate address usually needs its own electric meter at minimum, and sometimes separate water service depending on the parcel. We coordinate that during plan check so the final inspection doesn’t stall. Call (361) 315-4177 and we’ll confirm what applies to your lot.
Get a Written Price Before You Commit
If you’re in Orange and considering a garage conversion, start with a site visit. We’ll evaluate the existing garage structure, the slab, the lot setbacks, and the parking situation, then hand you a written line-item price. No vague numbers, no change orders unless you change the scope. That’s the Garrison Standard. Call (361) 315-4177 or reach the team at Fielding ADU Builders and ask for Reed. Scheduling and dispatch are coordinated from our Los Angeles office, and our crews serve Orange locally.
Written by Reed Calloway, Owner at Fielding ADU Builders.
