A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Perris, CA
Fielding ADU Builders handles permitted ADUs, garage conversions, and room additions across Perris, CA. The work here runs into a specific mix of older single-family lots, newer subdivisions, and city rules that are still tightening as Perris grows. We put the price in writing before any work starts, and every job carries a one-year written guarantee under The Garrison Standard. Call (361) 315-4177 to schedule a free estimate.
Why Perris Homes Are Different
Perris sits on terrain that shifts how we build. Many lots slope gently toward former agricultural drainage lines, and expansive clay soil is common in pockets across the city. That clay swells when wet and shrinks when dry, which means foundation work on a room addition or detached ADU often needs a soils report before we pour. We have seen this repeatedly on older homes off Perris Boulevard and around the downtown grid.
Housing stock varies block by block. There are 1950s and 1960s ranch homes with block walls and flat lots near the center of town, plus newer master-planned subdivisions on the north and east sides where HOAs rule with their own paint colors, setbacks, and design reviews. A garage conversion in an HOA community off Nuevo Road has to clear that board before the city will even look at the plans. Permits go through the City of Perris Building and Safety Division, and ADU applications there now move under state-mandated timelines, but site-specific corrections still come back for grading, drainage, and sewer lateral ties. We plan for those reviews on every Perris job.
Our Main Perris Services
Perris homeowners call us most often for two reasons: they need more living space and they do not want to move. Each service below has its own Perris page with local pricing and job specifics.
Room Addition Contractor in Perris
A room addition in Perris usually means tying new framing to an existing slab foundation, and the soil conditions here make the foundation detail the first thing we check. Older homes off San Jacinto Avenue often have shallow footings that need a structural tie-in detail before the permit set is complete. We handle the plans, the permit, the build, and the final inspection. Room Addition Contractor in Perris.
Garage Conversion Contractor in Perris
Garage conversions in Perris are popular in older neighborhoods where the garage is a detached block structure and the lot has room to keep parking on the driveway. The city requires a replacement parking space in most cases, and HOA communities off Redlands Avenue often have their own rule on that point. We bring the conversion up to current code for electrical, insulation, and egress. Garage Conversion Contractor in Perris.
ADU Builders in Perris
Detached ADUs in Perris run the full range: prefab units like Abodu and Cover on newer lots, plus conventional stick-built units with James Hardie siding where the setback and grading allow. The city’s ADU rules follow state law, but Perris still reviews each site for drainage and utility connections. We match the build method to your lot and your budget, and the price is in writing before we start. ADU Builders in Perris.
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 Perris
We work with Abodu, Cover, and Dvele modular platforms, and we build conventional ADUs with James Hardie siding. Parts and panels are sourced from regional suppliers, so lead times stay short. Our brands page lists the full set and what each one suits best.
Pricing for ADU Company in Perris, CA
| Service | Typical range in Perris |
|---|---|
| Detached ADU (prefab, 1-bed) | $180,000 – $260,000 |
| Detached ADU (custom build, 1-bed) | $230,000 – $310,000 |
| Garage conversion (finished living space) | $90,000 – $150,000 |
| Room addition (300 – 500 sq ft) | $120,000 – $190,000 |
| Room addition (500 – 800 sq ft) | $170,000 – $260,000 |
Soil corrections, sewer lateral replacements, and HOA design reviews are the three things that push Perris prices up. Whatever the number lands at, it goes in writing before we start, and that same number is what appears on the final invoice.
Neighborhoods We Serve in Perris
We cover all of Perris and the surrounding area. Most of our jobs are concentrated in the neighborhoods below, but we take work anywhere in the city limits.
- Downtown Perris
- North Perris near the 215
- Community east of Perris Boulevard
- Subdivisions off Nuevo Road
- Area around Lake Perris
Service Area – Cities Near Perris
We also serve nearby cities in Riverside County, including Moreno Valley, CA, Lake Elsinore, CA, Menifee, CA, and Homeland, CA. Dispatch and scheduling are coordinated from our Inland Empire office, and crews serve Perris locally.
Serving Perris, CA - Our Local Coverage Area
We’re based in the Perris 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 Perris
Planning and permit approval in Perris typically takes 4 to 8 weeks depending on the scope and whether an HOA review is involved. Construction start follows within a few weeks of permit issuance. Call (361) 315-4177 for a schedule that fits your lot.
Yes. Many Perris subdivisions have design review rules for setbacks, colors, and parking. We work through that review in parallel with the city permit so the schedule is not stretched. Estimates are free and the price stays in writing.
We cover the full city, from downtown Perris to the north and east subdivisions near the 215 and Lake Perris. Our crews work in Perris weekly, and scheduling goes through our Inland Empire office. Call (361) 315-4177 to confirm your address.
To schedule a free estimate for an ADU, garage conversion, or room addition in Perris, call (361) 315-4177. A live person answers, day or night, and the price is in writing before any work starts.
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 Perris Customers Say
"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."Clear price breakdown. Change orders were all in writing."
- Hal P.
