







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Wildomar, CA
Most Wildomar ADU projects involve more than framing and drywall. The lots are larger, many homes run on septic, and the terrain slopes toward the hills. That means an accessory dwelling unit here often needs custom utility work and real attention to drainage before the first wall goes up. We’re Lodgewick ADU Builders, the ADU company of the Kingswell family, and we put a written price in your hand before any work starts. Call (831) 292-4191 to talk through your Wildomar property.
Why Wildomar Homes Are Different

Wildomar is not Murrieta or Temecula. The city holds onto a rural feel with large parcels, ranch-style homes from the 1970s and 1980s, and subdivisions built through the 2000s. A lot of properties run on septic systems that were sized for one house, not two. When you add an ADU to a Wildomar lot, the county often wants the septic checked or upgraded, and that can add $15,000 to $40,000 depending on soil and system age. That’s a hurdle most homeowners don’t see coming, and it’s the single biggest cost variable on Wildomar ADU projects.
The climate adds another layer. Summers push past 100 degrees, and an ADU without proper insulation and ventilation turns into an oven by July. Winter rains soak sloped lots, so foundation waterproofing and drainage matter more here than on flat city lots in Riverside. If your property backs up to the hills or sits in a drainage path, we plan for that from the first site walk. Many Wildomar homes also lack natural gas hookups, which steers a lot of our projects toward electric heat pump systems and induction cooktops.
Our Main Wildomar Services
Wildomar homeowners call us most often for two things: turning an existing structure into living space, or building something new on the back half of the lot. Each service has its own Wildomar page with detailed pricing and timelines.
Home Addition Contractor in Wildomar
A home addition in Wildomar usually means expanding the main house rather than building a separate structure. On older ranch-style homes, that often involves tying new framing into existing 1980s construction, matching rooflines, and upgrading a panel that was never designed for the extra load. On sloped lots, the foundation work gets more involved, and we may need stepped footings or retaining walls. If your lot has a septic system, an addition that adds bedrooms can trigger a county requirement to verify system capacity. Russ Delmar leads our Wildomar projects and keeps every commitment in writing. See Home Addition Contractor in Wildomar for full details.

Garage Conversion Contractor in Wildomar
Converting a garage in Wildomar is one of the fastest ways to add a rental unit or a place for aging parents. Many Wildomar homes have attached garages built in the 1990s or early 2000s, and the concrete slab is usually in decent shape. The bigger questions are insulation, ceiling height, and whether the garage shares a wall with the main house. Wildomar’s hot summers mean a garage conversion needs real insulation in the walls and attic, not just a coat of paint. On properties with septic, converting a garage to living space doesn’t usually add a bedroom count that triggers an upgrade, which keeps costs down. Read Garage Conversion Contractor in Wildomar for pricing specific to your garage.

ADU Builders in Wildomar
A detached ADU in Wildomar often goes where the barn used to be, or on the open back acre of a horse property. That’s different from building in a tract subdivision. We’re working around existing wells, septic leach fields, and sometimes protected oaks. Placement matters: you want the unit close enough to tap existing utilities but far enough to preserve the open feel that brought you to Wildomar. We work with prefab manufacturers like Abodu, Cover, and Dvele when the lot and budget fit, which can cut months off the timeline compared to stick-built. Our ADU Builders in Wildomar page walks through lot requirements, septic considerations, and realistic budgets.

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 Wildomar
We work with established ADU and materials brands that hold up to Wildomar’s heat and occasional winter storms. That includes James Hardie siding for fire resistance, Abodu and Cover for prefab ADU shells, and Dvele for high-performance modular units. Since wildomar projects often need quick decisions on materials, we keep our suppliers local and can usually confirm availability within a day. Browse our brands to see what we install most.
Pricing for ADU Company in Wildomar, CA
| Service | Typical range in Wildomar |
|---|---|
| Detached ADU (1 bed, 1 bath, 400 – 600 sq ft) | $160,000 – $240,000 |
| Detached ADU (2 bed, 2 bath, 700 – 1,000 sq ft) | $240,000 – $380,000 |
| Prefab ADU (permit to install, 400 – 800 sq ft) | $140,000 – $240,000 |
| Attached JADU (converted from existing space) | $80,000 – $140,000 |
| Garage conversion to ADU (full finish, 400 – 500 sq ft) | $100,000 – $170,000 |
| Garage conversion, no utility moves | $75,000 – $120,000 |
| Septic upgrade or alternative system (if required) | $15,000 – $40,000 |
| Home addition, 300 – 500 sq ft (room or suite add-on) | $110,000 – $210,000 |
| Home addition, 500 – 800 sq ft (living room + bedroom) | $180,000 – $320,000 |
| Panel upgrade (100A to 200A) | $2,500 – $5,000 |
| Heat pump HVAC for ADU (per unit) | $7,000 – $14,000 |
What pushes a Wildomar ADU toward the top of these ranges? Septic capacity, sloped foundation work, and long utility runs from the main house to the back of the lot. Every estimate we give is a written price before work begins, and that price doesn’t change at the door.
Neighborhoods We Serve in Wildomar
Wildomar spreads across flat subdivision streets near the freeway and climbs into horse country toward the hills. We work throughout the city, and most of our crews reach any Wildomar address within 30 to 45 minutes after dispatch.
- The Farm (HOA-governed, tract homes, 1990s – 2000s)
- Wildomar Hills and ranchette properties along Grand Ave
- Lake Elsinore Hills side (shared border area)
- Sedco and Mission Trail corridors
- Clinton Keith Road corridor (newer subdivisions)
Service Area – Cities Near Wildomar
Lodgewick ADU Builders serves Wildomar and the surrounding communities across Riverside County. If you’re in a neighboring city and have questions about an ADU, a garage conversion, or a home addition, we can help. We also work in Homeland, CA, Riverside, CA, Beaumont, CA, and Calimesa, CA. Scheduling and dispatch for our Wildomar crews run from our Inland Empire office.
Serving Wildomar, CA - Our Local Coverage Area
We’re based in the Wildomar 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 Wildomar

Most Wildomar addresses are within 30 to 45 minutes of our crews. When you call, a live person answers and can get a site visit on the calendar, usually within a few business days depending on your schedule. Call (831) 292-4191 and we’ll set it up.
Some Wildomar neighborhoods, like The Farm, have active HOAs that require design review before you build. California law limits how much an HOA can block an ADU, but you still need to follow their application process. We’ll help you identify what your specific HOA requires so nothing stalls mid-project.
Many Wildomar lots have septic systems sized only for the main house. Adding an ADU with a bedroom often triggers a county review of system capacity. If the system can’t handle the load, you’ll need an upgrade or an alternative system, which typically adds $15,000 to $40,000. We assess this early so you know the real number before committing.
If you’re weighing an ADU, garage conversion, or home addition in Wildomar, call (831) 292-4191 for a free estimate with a written price. No pressure, no vague ballpark. Just a real number in writing.
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 Wildomar Customers Say
"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"A whole backyard ADU from scratch. Terrified me going in, but they kept me updated weekly and there were no nasty surprises. Quality work and a fair price."
- Noreen Fletcher





