A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Riverside, CA
ADU work in Riverside, CA moves on two tracks: older homes with detached garages and big rear yards in historic districts, and newer stucco subdivisions where a prefab unit can go up fast. Lodgewick ADU Riverside builds accessory dwelling units (ADUs, which are small homes on the same lot as a main house), garage conversions, and home additions under The Kingswell Guarantee: a written price before work starts, a defined arrival window, a clean job site, and a written guarantee on every project. Call (831) 292-4191 for a free estimate.
Why Riverside Homes Are Different
Riverside’s housing stock spans early-20th-century Craftsman and Spanish Revival homes downtown, mid-century ranch tract houses across the east and west sides, and newer 1980s to 2000s stucco subdivisions in Orangecrest and La Sierra. The older homes often have detached garages or large rear yards that make garage conversions and standalone ADUs practical. The newer subdivisions tend to have tighter lots and HOA rules that push homeowners toward attached ADUs or permitted guest-house conversions.
The climate shapes the work too. Summers regularly pass 100°F, so cooling is not optional – we size mini-split systems and insulation for Riverside heat, not coastal mildness. When Santa Ana winds blow, hillside neighborhoods face fire-risk rules: defensible-space clearing and fire-resistant siding, roofing, and vents are often required before an ADU gets final sign-off. In the Wood Streets historic district near downtown, design review often means matching the neighborhood’s early-1900s bungalow character – a detached garage conversion behind the house usually clears review faster than a visible new structure.
Our Main Riverside Services
Riverside homeowners call us most often about three jobs: adding a room or wing to the existing house, converting a garage into living space, and building a detached or attached ADU from the ground up. Each has its own Riverside page with pricing, timelines, and what to expect.
Home Addition Contractor in Riverside
A home addition in Riverside means extending the footprint of an existing house – a new bedroom suite, a family room bump-out, or a second-story addition. On ranch tract homes across the east and west sides, slab foundations and single-story framing usually keep additions simpler than on hillside lots, where grading and retaining walls add cost. We handle the engineering, permits, and construction as one contract with a written price up front. Home Addition Contractor in Riverside
Garage Conversion Contractor in Riverside
A garage conversion turns an existing detached or attached garage into a permitted living space – a studio, a one-bedroom unit, or a home office. In Riverside’s pre-1950s neighborhoods, detached garages were often built to match the house, so conversions preserve the original look while adding square footage behind the main structure. We replace the garage door with a proper wall, upgrade electrical and insulation, and pull all city permits. Garage Conversion Contractor in Riverside
ADU Builders in Riverside
A backyard ADU is a standalone small home built from the ground up on your existing lot. Riverside’s “Riverside Renaissance” initiative has streamlined ADU permits as part of a push to add 40,000 housing units by 2029, which means faster approval timelines than many California cities. We build both stick-frame ADUs and prefab units from manufacturers like Abodu and Cover, matched to your lot size and setback rules. ADU Builders in Riverside
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 Riverside
We work hands-on with prefab ADU systems from Abodu, Cover, Dvele, and Mighty Buildings, choosing the unit that fits the lot, budget, and Riverside’s fire-resistance and insulation requirements. See our brands for the full range we service and stock locally.
Pricing for ADU Company in Riverside, CA
| Service | Typical range in Riverside |
|---|---|
| Prefab ADU (permit-ready, site work included) | $95,000 – $180,000 |
| Stick-frame ADU, 400-600 sq ft | $140,000 – $260,000 |
| Garage conversion to studio ADU | $80,000 – $140,000 |
| Garage conversion to 1-bedroom ADU | $110,000 – $190,000 |
| Home addition, 200-400 sq ft | $65,000 – $140,000 |
| Home addition, 400-800 sq ft | $130,000 – $280,000 |
| Second-story addition | $220,000 – $450,000 |
| Permit drawings and city submittal | $4,500 – $9,000 |
| Foundation pour (new ADU or addition) | $12,000 – $28,000 |
| Fire-resistant siding upgrade (hillside zones) | $18,000 – $42,000 |
| Mini-split cooling system, 2-3 zones | $8,000 – $16,000 |
In Riverside, prices climb most on hillside lots that need grading, retaining walls, or fire-resistant materials, and in historic districts where design review adds drawing and revision time. Every Lodgewick Riverside quote is a written, line-item price before any work starts – no change orders at the door.
Neighborhoods We Serve in Riverside
Our crews work across Riverside, from the Wood Streets and downtown core to the east and west ranch-tract neighborhoods and the newer subdivisions on the south side. We schedule work in defined arrival windows and keep the job site clean throughout the build.
- Wood Streets (historic district)
- Orangecrest
- La Sierra
- Victoria
- Arlington Heights
Service Area – Cities Near Riverside
Our Riverside, CA office also schedules work in nearby Inland Empire communities. If your property is outside the city limits, we can usually coordinate a site visit from the same local team. See our pages for Rialto, CA, Fontana, CA, Mira Loma, CA, and Highland, CA for area-specific pricing and permit details.
Serving Riverside, CA - Our Local Coverage Area
We’re based in the Riverside 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 Riverside
Permit-ready prefab units can often start site work within a few weeks of a signed contract. Stick-frame ADUs and additions typically take 4 to 8 weeks to get through Riverside plan check, then construction runs 3 to 7 months depending on scope. Call (831) 292-4191 for a real timeline on your lot.
Yes. Many Orangecrest and newer subdivisions require HOA architectural review before the city will issue permits. We prepare the submittal package, attend review sessions when needed, and adjust the design to meet HOA guidelines without changing the price.
We pull all Riverside city and Riverside County permits ourselves, and we schedule every inspection through to final sign-off. You’ll get permit status updates as part of the written project schedule, and the permit record stays with the project file for the lifetime of the guarantee.
If you’re comparing ADU builders in Riverside, get a written price first. We’ll walk the lot, talk through what fits the zoning and the neighborhood, and hand you a line-item quote before you commit to anything. Call (831) 292-4191 for a free estimate.
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 Riverside Customers Say
"Garage conversion into a studio for our teenager. Honest about what was realistic and what wasn't, finished close to schedule, and cleaned up the site daily."
- Marcus Beaumont"Garage conversion into an office and guest room. Fair written price, finished close to on schedule, and they fixed a small drywall crack under warranty months later without any hassle."
- Diana Cho"I was nervous about adding on but they walked me through every step and every cost before we started. No surprise change orders halfway through like I'd heard horror stories about."
- Eleanor Pratt
