A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Covina, CA
Fielding ADU Builders handles accessory dwelling units, garage conversions, and room additions across Covina, CA. Most Covina lots were platted in the 1950s and 1960s, which means standard setbacks, mature trees, and specific soil conditions shape nearly every project we price here. If you’re weighing an ADU, a garage conversion, or an addition, call (361) 315-4177 and we’ll put a written number in front of you before any work begins.
Why Covina Homes Are Different
Covina’s housing stock runs heavily to single-story ranch homes built between 1947 and 1975, many on lots that are wider than they are deep. That lot geometry changes ADU placement: on a deeper lot you tuck the unit behind the house; on a wider Covina lot you’re more likely working along the side yard, which can push you into setback variance territory (the city’s written permission to build closer to the property line than the standard rule allows).
The climate matters too. Covina sits far enough inland that summer temperatures regularly run 10 to 15 degrees hotter than the coast, so we spec insulation and window packages differently than we would in a beach city. Older Covina homes also carry galvanized plumbing and 100-amp panels. When we price an ADU with a kitchen or a bathroom, we check the service panel early, because upgrading to 200 amps is a real line item that some contractors conveniently forget until week three. Terrain around neighborhoods like Charter Oak and the hills above Rancho La Paz adds grading and drainage work that flat-lot quotes never include.
Our Main Covina Services
Covina homeowners call us most often about three things: adding square footage to the main house, converting an existing garage into living space, and building a detached ADU in the back. Each one has its own Covina page, because each one hits differently on permits, cost, and timeline.
Room Addition Contractor in Covina
A room addition in Covina usually means extending off the back or side of a mid-century ranch, and the first question is whether the existing foundation is up to carrying new framing. We handle the structural review, the permit drawings, and the build under one written price. On the older streets around downtown Covina, matching rooflines and stucco texture matters more than it would on a newer build, so we carry that into the quote. Room Addition Contractor in Covina.
Garage Conversion Contractor in Covina
Garage conversions in Covina are common on the tract-home lots north of the 10 freeway, where detached two-car garages sit toward the back of the property. The typical Covina garage conversion means raising the floor to match the house, replacing the slab or leveling it, and running new sewer and electrical lines. We’ve handled conversions where the old garage door becomes a wall and a window, and others where the homeowner keeps an 8-foot door opening for a workshop feel. Garage Conversion Contractor in Covina.
ADU Builders in Covina
Detached ADUs in Covina work best on the deeper lots in and around Charter Oak, Rancho La Paz, and the streets south of Badillo Street, where there’s room to keep the unit outside the main yard’s usable space. Covina’s ADU rules follow California state law, but the city still reviews your lot for setbacks, utility placement, and tree protection. We price both conventional stick-built ADUs and prefab platforms like Abodu and Dvele, and we’ll tell you plainly which one fits your lot and budget. ADU Builders in Covina.
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 Covina
We install and finish ADUs from Abodu, Cover, and Dvele, and we build conventional units with James Hardie siding. Turnaround on parts and panels is usually days, not weeks, because we order direct and carry our own finishing crews. See our brands for the full list.
Pricing for ADU Company in Covina, CA
| Service | Typical range in Covina |
|---|---|
| Detached ADU (prefab, 400 – 600 sq ft) | $155,000 – $225,000 |
| Detached ADU (conventional build, 600 – 800 sq ft) | $230,000 – $320,000 |
| Garage conversion (attached, 400 – 500 sq ft) | $95,000 – $140,000 |
| Garage conversion (detached, 400 – 600 sq ft) | $120,000 – $175,000 |
| Room addition (200 – 300 sq ft, bedroom or office) | $75,000 – $120,000 |
| Room addition (400 – 500 sq ft, primary suite) | $130,000 – $180,000 |
| Electrical panel upgrade to 200 amps | $3,500 – $6,000 |
| Foundation repair or leveling (per project) | $4,000 – $12,000 |
| Permit fees and city submittals | $2,500 – $7,000 |
What pushes a Covina quote upward is usually the lot itself: sloped terrain, older foundations, or a panel that needs upgrading. That’s why the written price we hand you before work starts is the one we hold to. No change orders, no door-by-door surprises.
Neighborhoods We Serve in Covina
Our crews work across Covina, from Charter Oak and Rancho La Paz to the streets around downtown, Covina Hills, and the newer subdivisions east of Azusa Avenue. Response time for a free estimate anywhere in Covina is generally 24 to 48 hours, depending on our schedule.
- Charter Oak
- Rancho La Paz
- Covina Hills
- Downtown Covina
- North Covina
Service Area – Cities Near Covina
We also run projects in the cities immediately around Covina. Homeowners from Azusa, CA to the north, West Covina, CA to the southwest, Baldwin Park, CA to the west, and Glendora, CA to the east reach us regularly for ADUs and additions. If your city borders Covina, call and ask; we’ll tell you straight whether we’re the right crew for your street.
Serving Covina, CA - Our Local Coverage Area
We’re based in the 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 ADU Company in Covina
Most Covina homeowners get a free estimate within 24 to 48 hours of calling, and the written price follows the site visit. Call (361) 315-4177 to get on the schedule.
Yes. We prepare and submit permit drawings to the City of Covina, and we coordinate with your HOA if you’re in a community like Rancho La Paz or a managed tract. HOA review can add two to six weeks to a Covina project, and we build that into your timeline up front, not after the fact.
No. The number you approve on day one is the number on the final invoice. If we find a problem behind the walls – an undersized panel or a cracked foundation – we stop, show it to you in writing, and get your sign-off before spending another dollar. Call (361) 315-4177 for an exact quote; estimates are free.
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 Covina Customers Say
"Built a detached ADU behind our house. The builder is a veteran and runs the site like a platoon: schedule posted, crew on time, everything labeled. Finished within a few days of the date."
- Ken W."Room addition over the back patio. Framing is square, windows are tight, and the roofline matches."
- Danny L."Foundation and slab poured on schedule. Crew kept the yard orderly."
- Marian J.
