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 West Covina
A garage conversion in West Covina typically runs $85,000 to $145,000 for a standard attached garage turned into a studio or one-bedroom unit, before permit and design fees. That number moves based on what we find when we open the walls: panel capacity, hillside drainage, framing condition. The work generally takes 10 to 14 weeks from permit submittal to final inspection. Call (559) 238-9583 for a written line-item estimate.
We work throughout West Covina, from the flatland tracts south of the 10 Freeway up into the hillside streets off Azusa Avenue and Grand Avenue. Our crews know these homes because they were built the same way for thirty years: wood frame, stucco or lap siding, attached garages with slab floors poured before waterproofing standards caught up to the terrain. When you call, a live person answers. We send a background-checked, uniformed crew to your property, and we put the price in writing before any work starts.
Why Fielding ADU West Covina Is West Covina’s Preferred Garage Conversion Contractor Company
Fielding ADU West Covina is an independently owned member of the Garrison Partners family, which has been building to The Garrison Standard since 2006. The Standard is not a slogan. It is five rules we operate by: show up in the window we give you, put the price in writing before the work starts, build it by the book with permits pulled, leave the site clean, and stand behind the job for a full year in writing. If something fails inside those 365 days, we return and correct it at no charge.
Homeowners in West Covina call us after a previous contractor missed the schedule, moved the price on them, or left the permit board blank. That history is why our written price policy matters. The number you approve on day one is the number on the final invoice, unless you approve a written change order. We do not surprise you with an electrical upgrade or a drainage fix after demo starts. We inspect first, write allowances into the contract, and price any surprise in writing before we touch it.
Reed Calloway leads our team. Every crew member on your West Covina job has passed a background check and shows up in uniform. You will know exactly who is in your driveway and who to call with a question. Dispatch and scheduling are coordinated from our Los Angeles office, with crews serving West Covina locally.
Garage Apartment Conversion in West Covina
A Garage Apartment Conversion in West Covina means turning an existing garage, attached or detached, into a legal dwelling unit with its own entrance, kitchen, bathroom, and sleeping area. For a 1960s attached two-car garage in the flatland tracts near Cameron Park, expect to spend $95,000 to $135,000 including finishes, fixtures, and the panel upgrade most of those homes need. A detached garage apartment on a hillside lot will run higher because of grading, retaining, and access work for the foundation.
This is the most requested conversion in West Covina because the housing stock supports it. Homes built between 1950 and 1980 sit on generous lots, and many garages were built with clear spans and standard framing that convert well. The work includes insulation, drywall, a mini-split for cooling, a compact kitchen, a full bath, and a separate electrical subpanel. We handle the full scope: design, engineering, permits, construction, and final inspection.
The Pre-1970 Electrical Reality
Many pre-1970 homes in West Covina’s eastern hillsides still carry 60-amp electrical panels. That is undersized for an ADU and must be upgraded to 200 amps before the garage apartment can pass final inspection. A service upgrade runs $4,000 to $6,000 in this market, and we inspect the panel before we quote so it is in your price on day one.
Hillside Garage Apartments
Garage apartments on sloping lots off Azusa Avenue or Grand Avenue need more than a standard flatland conversion. The original slab was often poured against a cut slope with no waterproofing. We add drainage, swales, and sometimes a retaining wall so the new unit stays dry and passes code. That work is written into the contract, not discovered later.
Garage Conversion Permit in West Covina
A Garage Conversion Permit in West Covina is the city’s written approval to legally change a garage from vehicle storage to living space, and it is not optional. The permit path covers zoning review, structural engineering for the new ceiling and any wall openings, Title 24 energy compliance, and electrical, plumbing, and mechanical inspections. Permit fees in West Covina for a standard garage conversion typically run $3,000 to $6,000 depending on scope, on top of construction cost.
We pull every permit for our West Covina jobs and we coordinate the inspections. The permit is not a formality here. West Covina’s planning and building department reviews the project against current state ADU law and local zoning, including setbacks, parking replacement requirements, and fire-safety standards for hillside lots. If the city requires a setback variance, we prepare the paperwork and walk it through. A setback variance is the city’s written permission to build closer to the property line than the standard rule allows.
What Opening the Walls Triggers
Once the permit is issued and we open your walls, the city gets to see what is actually there. That means the old knob-and-tube wiring, the termite-damaged sill plates, the missing insulation. This page tells you exactly what a West Covina garage conversion permit triggers when we open your walls: the 60-amp panel, the hillside drainage, and the asbestos test, so your quote has no hidden zeroes. We inspect for all three before we write the contract.
Asbestos and Older Garages
Garages built in the 1950s and 1960s often have drywall and popcorn ceiling texture that contains asbestos. If you grind that off without testing, the city can issue a stop-work order. We test first. If asbestos is present, we line up a licensed abatement contractor and include that cost in your written price before demo begins.
Trusted Brands We Service in West Covina
We build conventional garage conversions with James Hardie siding and standard wood framing, and we are fluent with leading prefab and modular platforms including Abodu, Cover, and Dvele. If you are researching a prefab ADU for your West Covina lot, we can match the right build method to your budget and site conditions. Call (559) 238-9583 and ask about the differences between a conventional build and a factory-built unit, or visit our Garage Conversion Contractor page for the full scope of what we build.
Common Garage Conversion Contractor Problems We See in West Covina Homes
Older homes hide things. Here is what we find most often on garage conversions across West Covina, and how we handle it:
- Undersized electrical panels. The 60-amp panel in a 1960s home cannot carry a new kitchen, bath, and mini-split. We inspect the panel before quoting so the $4,000 to $6,000 upgrade is in your price, not a surprise after demo starts.
- Hillside drainage failures. Slabs poured against cut slopes without waterproofing leak during the first winter rain. We add swales, drainage board, and retaining walls where the grade demands it, written into the contract.
- Termite and rot damage. Sill plates where the slab meets a hillside are often chewed or rotted on pre-1980 homes. We replace them, get written approval for the change order, and move on.
- Asbestos in drywall and popcorn ceilings. 1950s garage finishes frequently contain asbestos. We test before grinding anything off, avoiding a city stop-work order and a clean-air violation.
Pricing for Garage Conversion Contractor in West Covina, CA
Here are honest numbers for the West Covina market. A basic attached garage conversion, no panel upgrade, no hillside work, runs $85,000 to $110,000. The same job with a 200-amp service upgrade, new drainage, and a kitchen and bath lands at $120,000 to $145,000. A detached garage ADU on a steep hillside lot off Grand Avenue or Azusa Avenue runs $150,000 to $210,000 because of foundation, retaining, and access costs. All of these include our written one-year warranty. The estimate is free, it is in writing, and it is line-itemed. Call (559) 238-9583 to schedule yours.
We Also Serve Cities Near West Covina
Fielding ADU West Covina works in Covina, Baldwin Park, Hacienda Heights, and Walnut. If your property sits in one of those neighboring cities, the same written price policy and one-year guarantee apply. See our Garage Conversion Contractor in West Covina page for service area details.
Serving West Covina, CA - Our Local Coverage Area
We’re based in the West Covina 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 West Covina
Yes, in most cases. Pre-1970 homes in West Covina, especially on the eastern hillsides, often still have 60-amp panels, which cannot support a new dwelling unit. You will need a 200-amp upgrade, which runs $4,000 to $6,000 in this market. We inspect the panel before we quote so it is in your price upfront. Call (559) 238-9583 for an exact quote, estimates are free.
Yes. Hillside lots trigger drainage review, and in wildfire-prone areas the city may require additional fire-safety measures like tempered windows or ember-resistant vents. We handle the engineering and the paperwork for those conditions, and we write the costs into your contract before work begins. If you are on a steep lot, call us and we will walk the property with you.
We write a change order. You see the price, the scope, and the reason in writing, and we do not proceed until you approve it. On a hillside property off Azusa Avenue, our crew opened a 1962 attached garage and found knob-and-tube wiring feeding the original panel plus termite-damaged sill plates where the slab met the hill. We priced a 200-amp panel upgrade and full sill replacement, got written approval, then framed the new unit with James Hardie lap siding and added a mini-split for the valley heat.
In most cases, yes, but it depends on the condition of the slab and walls. Steep hillside garages often have slab settlement or rot that makes the original structure unsafe to build on. We assess it first, and if the foundation cannot support the added load, we tell you plainly and price the correction. You will not get surprised later.
We treat the prefab structure as a separate building. If it stays, we tie the garage conversion into it at the roofline and weatherproof the connection. If it has to go, we handle the removal and disposal. We work with Tuff Shed-style structures and major prefab platforms including Abodu, Cover, and Dvele, so we can match the right approach to what is already on your lot.
Call Fielding ADU West Covina
We are the garage conversion contractor in West Covina that writes the price down before anything gets hammered. If you own an older home here, you already know the walls hide things. We inspect first, price it straight, and stand behind the work for a full year in writing. Call (559) 238-9583 for a free written estimate. A live person answers, day or night.
Written by Reed Calloway, Owner at Fielding ADU West Covina, building to The Garrison Standard since 2006.
