ADU Company in Riverside, CA
Lodgewick ADU Builders is the ADU company of the Kingswell family, led by Russ Delmar. We design, permit, and build accessory dwelling units, garage conversions, and home additions across Riverside, CA. Riverside jobs run differently than coastal work: the heat demands heavier cooling calculations, the older housing stock often needs panel and plumbing upgrades, and Riverside Public Utilities runs its own inspection queue. That’s the work we know. Call (254) 602-5618 for a free estimate.
Why Riverside Homes Are Different
Riverside’s established neighborhoods – Wood Streets, Canyon Crest, Magnolia Center – sit on lots that routinely run 7,500 to 10,000+ square feet. That’s far larger than comparable parcels in coastal LA or Orange County cities. Combined with persistent rental demand from UC Riverside’s roughly 26,000 students, those lot sizes make fully detached ADUs both physically feasible and financially compelling here in a way that simply isn’t true in denser Westside or OC markets, where junior ADUs dominate. A detached ADU with its own address commands premium rent near campus, and Riverside lots actually have the room for one.
Older homes in the Wood Streets and Alessandro Heights areas present their own set of realities. A 1920s Craftsman or Spanish Revival bungalow frequently has an undersized 100-amp panel and cast-iron or galvanized supply lines. Both need upgrading before an ADU can receive final sign-off. Canyon Crest and east-side ranch homes from the 1950s through 1970s often have detached garages that are prime conversion candidates, though they carry the same panel and plumbing realities.
Then there’s the heat. Riverside sits in the Inland Valley heat pocket and regularly sees summer highs of 105 to 110°F. That puts ADUs here in Title 24 climate zone 10, with much heavier cooling-load requirements than coastal cities 50 miles west. Mini-split systems are effectively non-negotiable. Insulation and window specs that pass in a coastal ADU will fail Riverside’s energy calculations. We size and spec accordingly from day one, not after a plan check rejection.
Our Main Riverside Services
Most Riverside homeowners call us about one of three things: adding square footage to the main house, converting a garage into a rentable or in-law unit, or building a fully detached ADU. Each has its own dedicated Riverside page below.
Home Addition Contractor in Riverside
Home additions in Riverside mean extending the footprint of a ranch home in Canyon Crest or pushing out the back of a Wood Streets bungalow. The work usually starts with the same reality check: panel capacity, supply line age, and Title 24 cooling load. Older Riverside homes often need a service upgrade before framing begins. We handle the full permit path as a Home Addition Contractor in Riverside, from RPU service upgrade paperwork through final inspection.
Garage Conversion Contractor in Riverside
Detached garages on oversized Riverside lots convert well, but the existing slab, roofline, and electrical feed determine scope more than square footage does. A 1950s garage in Canyon Crest will need its own sub-panel and likely a new service drop coordinated through Riverside Public Utilities. We’ve done enough of these to know where the budget gets stressed and where it holds. See how we approach it as a Garage Conversion Contractor in Riverside.
ADU Builders in Riverside
Detached ADUs are the standout opportunity in Riverside because the lots are big enough to actually fit one and still leave a real yard. Rental demand near UC Riverside makes a one- or two-bedroom ADU a legitimate income property. We match prefab and site-built approaches to the lot, the setback constraints, and the RPU service situation. Read the full breakdown on our ADU Builders in Riverside page.
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 established ADU manufacturers including Abodu, Cover, and Dvele, plus Mighty Buildings for panelized options. Choosing between them comes down to lot access, setback constraints, and how much customization the homeowner wants. Visit our brands page to see what each system does well.
Pricing for ADU Company in Riverside, CA
| Service | Typical range in Riverside |
|---|---|
| Detached ADU (site-built, full build) | $180,000 – $350,000 |
| Detached ADU (prefab or panelized) | $140,000 – $250,000 |
| Garage conversion (attached garage to ADU) | $80,000 – $150,000 |
| Garage conversion (detached garage to ADU) | $120,000 – $220,000 |
| Home addition (basic room or suite) | $60,000 – $120,000 |
| Home addition (larger family room or primary suite) | $120,000 – $250,000 |
| Electrical panel upgrade (100A to 200A) | $3,500 – $6,000 |
| Mini-split HVAC system (per zone) | $4,000 – $8,000 |
In Riverside, the two things that push a number higher than expected are panel and service upgrades through RPU, and Title 24 compliance on older lots where the ADU’s orientation makes cooling load the dominant line item. Those are known quantities we price in writing before any work starts. No change orders at the door, ever.
Neighborhoods We Serve in Riverside
We work across the full span of Riverside, from the historic core up to the east-side tract neighborhoods. Scheduling is coordinated from our Inland Empire office, with crews dispatched throughout the area.
- Wood Streets
- Canyon Crest
- Magnolia Center
- Alessandro Heights
- Eastside Riverside
Service Area – Cities Near Riverside
In addition to Riverside itself, we serve several surrounding communities in the Inland Empire, including Grand Terrace, CA, Bloomington, CA, Colton, CA, and Loma Linda, CA. Each has its own page with local pricing and conditions.
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
We can typically start design and site work within 2 to 4 weeks, depending on current workload. The bigger variable is Riverside’s permit and RPU review timelines. Call (254) 602-5618 for a realistic schedule for your lot.
If your neighborhood has an HOA, its architectural review process applies, but California state law limits an HOA’s ability to outright prohibit ADUs. We’ll help you document compliance and submit what the HOA requires. Early coordination prevents delays.
Most older Riverside homes do. You’ll likely need a 200-amp upgrade before the ADU receives final sign-off. That work runs through Riverside Public Utilities’ permit desk, and we handle it as part of the project scope. Call (254) 602-5618 to get a written estimate that includes it up front.
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
"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"Junior ADU conversion inside the house. They protected the rest of our place with plastic and daily cleanup. Done nearly on schedule and on the number they quoted."
- Sabrina Veld"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