







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Garage Conversion Contractor Across Wildomar
A garage conversion in Wildomar typically runs $95,000 to $185,000 for a full ADU build-out, and most high-end projects take 10 to 16 weeks once materials are ordered. The schedule on this tier of work gets driven by lead times on custom cabinetry, architectural glass, and specialty hardware, not by how fast a crew can frame walls. If you’re on a large Wildomar lot with a detached garage and a septic system sized only for the main house, you’ll want a contractor who flags the septic review before you sign anything. That’s the work we do. Call (831) 292-4191 and we’ll walk you through what your property actually needs.
Why Lodgewick ADU Riverside Is Wildomar’s Preferred Garage Conversion Contractor Company

Lodgewick ADU Riverside is the ADU company of the Kingswell family, and we’ve been building accessory dwelling units and garage conversions since 2010. Russ Delmar leads our Wildomar projects, and he’s the one who makes sure the written price you get at the start is the price you pay at the end. That commitment is called The Kingswell Guarantee: a written price before work begins, a defined arrival window, a clean job site, and a written 365-Day Done Right Promise on every project. If something’s not right within that year, we come back and fix it at no charge. No fine print, no phone tag.
Wildomar homeowners tell us the same thing over and over: they’ve been burned by a contractor who changed the price at the door or vanished after the deposit. We don’t work that way. A live person answers our phones 24/7, so when you call about your build, you reach a human who knows your project. And every Lodgewick technician who shows up at your Wildomar property is background-checked and uniformed. You’ll know exactly who’s walking onto your land.
Garage Apartment Conversion in Wildomar
A garage apartment conversion in Wildomar means turning an attached or detached garage into a self-contained living unit, usually with its own entrance, bathroom, kitchenette, and sleeping area. On Wildomar’s larger lots, this is often the smartest way to add rental income or a place for aging parents without giving up the open space that makes the city what it is. Detached garages are common here, and many sit far enough from the main house that the conversion functions like a small standalone home. That’s a good thing for privacy, but it also means the project needs its own utility plan, and often a septic capacity review.
Detached garage apartments on septic lots
A detached garage conversion in Wildomar frequently triggers a septic system capacity review with Riverside County. Most Wildomar septic systems were sized for the original house only. Add a second dwelling with a bathroom and kitchen, and the county wants to see that the system can handle the extra load. We coordinate that review early, before plans get locked in, so you’re not paying for redesigns later.
What a high-end conversion includes
On the higher end, we’re coordinating custom millwork, architectural glass, and specialty finishes that match the existing home’s character. Ranch-style Wildomar properties, especially the older ones, have a look that deserves respect. James Hardie siding, custom cabinetry, and fixtures ordered to spec take time, and we plan for that honestly.
Garage Conversion Permit in Wildomar

A garage conversion permit in Wildomar is required for any structural change, and on septic properties the permit path almost always includes a county health department review of the existing septic system. Riverside County handles the building permits for Wildomar, and they’re methodical about it. The first step is a site assessment and a conversation about your septic capacity, not a pretty rendering. We pull every permit ourselves, and the cost is included in our written estimate. Permitting fees for a garage conversion in Wildomar generally run $4,000 to $9,000 depending on scope, septic review requirements, and plan-check rounds.
Septic review before anything else
If your Wildomar property has a septic tank and no sewer connection, the septic capacity check is the single most important early step. We’ve seen too many projects stall at the permit counter because nobody looked at the septic system until the plans were already drawn. A septic expansion or alternative system approval can add $15,000 to $40,000, and that number needs to be in your written price before you commit.
How we keep permits moving
We submit plans that are complete the first time. Half the delays in Wildomar permitting come from incomplete submittals, missing energy calculations, or septic paperwork that no one checked. Our team handles all of it, and we’ll tell you exactly what the county is asking for and why.
Trusted Brands We Service in Wildomar
We work hands-on with leading ADU and prefab building systems, including Abodu, Cover, and Dvele. On Wildomar projects, we stock the common components and know these systems well enough to spec them properly for a rural lot, including drainage, insulation, and utility tie-ins. When you’re deciding between a panelized system and a traditional stick-built conversion, we’ll walk you through how each one performs in Wildomar’s climate, on your lot, with your septic constraints. We’re not tied to one manufacturer, so the recommendation you get is based on your property, not our inventory.
Common Garage Conversion Contractor Problems We See in Wildomar Homes
- Missing the septic capacity check. A garage conversion on a Wildomar lot with a septic system sized only for the main house can stall at the permit stage. The county flags the capacity issue late, and the homeowner is hit with a septic expansion cost that was never in the budget.
- Underestimating custom finish lead times. Architectural glass, custom millwork, and specialty cabinetry can add 10 to 16 weeks to a schedule. Rushing those orders leads to shoddy installation or finishes that clash with the rural character of the original home.
- Improper insulation for Wildomar’s dry heat. Garage shells often have no insulation and no real ventilation. Without a full envelope rework, your new living space will bake in July and August. We address this in every Wildomar quote, and it’s not an optional line item.
- Sloped lots and winter drainage. Many Wildomar parcels have grade changes that collect water in winter rains. Foundation waterproofing and drainage planning have to happen before the slab goes in, not after the first big storm.
Pricing for Garage Conversion Contractor in Wildomar, CA
A standard garage conversion into living space in Wildomar runs $85,000 to $145,000 for permitted work with a bathroom and kitchenette. A detached garage ADU with custom finishes, architectural glass, and septic expansion typically lands between $145,000 and $220,000. Septic expansion or alternative system approval alone can add $15,000 to $40,000 depending on soil conditions and the existing tank’s capacity. Custom millwork and cabinetry add $18,000 to $45,000 on high-end projects. We give you one written price before any work starts, and that price doesn’t move unless you change the scope. Call (831) 292-4191 to schedule a free estimate and get a real number in writing.
We Also Serve Cities Near Wildomar
Our Garage Conversion Contractor team works throughout the Wildomar area, including Wildomar and the neighboring communities of Homeland, Riverside, Beaumont, and Calimesa. If you’re on a septic lot or a rural parcel in any of these areas, call us. The same written price and 365-Day Done Right Promise applies everywhere we work.
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 Garage Conversion Contractor in Wildomar
Usually yes, if the existing septic system was sized only for the original house. Riverside County requires a capacity review when you add a second dwelling with plumbing, and many Wildomar systems fail that review. A septic expansion or alternative system approval can run $15,000 to $40,000. We handle the review early so the number is in your written price before any work begins. Call (831) 292-4191 for an exact quote on your property.
A high-end conversion with custom millwork, architectural glass, and specialty hardware typically takes 10 to 16 weeks, compared to 6 to 10 weeks for a standard finish. The difference is material lead times, not labor speed. Custom cabinetry and glass orders drive the calendar, and we give you a realistic schedule up front, in writing, based on what you’re actually ordering.
Yes, and that’s where we spend the most time. Wildomar’s horse properties have a character that matters. We use James Hardie siding in colors that match the existing structures, keep the rooflines consistent, and place the ADU so it doesn’t dominate the open space. We converted a 1987 ranch-style garage on a horse property near Bundy Canyon Road into a 750-square-foot ADU, coordinating a septic expansion permit and using custom millwork to match the original home. The architectural glass and specialty hardware drove a 14-week schedule, but our fixed-price agreement held before any materials were ordered.
The first step is a septic capacity review if your property isn’t on public sewer, followed by a site assessment and a written scope of work. Don’t pay for plans until you know the septic situation. We handle the county paperwork, the plan-check process, and every inspection. Permit fees for a Wildomar garage conversion generally run $4,000 to $9,000. Call (831) 292-4191 and we’ll walk you through it.
The two biggest reasons are a septic issue that surfaces late and custom finish lead times that weren’t accounted for. Both problems come from a contractor who didn’t do the upfront homework. We put the septic review, the material lead times, and the full scope into one written price before anything is ordered. If we miss something, that’s our problem, not a change order on your desk.
Russ Delmar and the Lodgewick ADU Riverside team build garage conversions in Wildomar the Kingswell Way: a written price first, a real arrival window, a clean job site, and a written 365-Day Done Right Promise on every project. Call (831) 292-4191 to schedule your free estimate. A live person answers, day or night.
Written by Russ Delmar, Owner at Lodgewick ADU Riverside, serving Wildomar and surrounding communities.




