A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Murrieta, CA
Adding an ADU in Murrieta usually costs between $180,000 and $320,000 for a turnkey one-bedroom unit, and the biggest variable is how your specific lot handles drainage and setbacks. Murrieta’s blend of 1990s tract homes, newer eastside developments, and large horse-property lots means a plan that works on one street can fail on the next street over. We build with brands like Abodu and Dvele so you can price a real product instead of a vague promise. Call (903) 568-7222 and we’ll put a written price in front of you before you commit to anything.
Why Murrieta Homes Are Different
Murrieta sits at the southern edge of the Inland Empire, and the housing stock shows it. The neighborhoods west of the 15, around Copper Canyon and the older sections off California Oaks Road, tend to be 1990s builds with smaller lots and established HOAs. East of the 215, you find newer subdivisions and larger parcels where a detached ADU has more breathing room. The soil here is decomposed granite over clay in spots, which affects foundation design more than people expect – a small addition can trigger deeper footings on one side of a yard and not the other.
Heat is the other factor we design around. Murrieta regularly sees summer days above 95 degrees, so ADUs and additions need real insulation planning and HVAC sizing that works for a 1,000-square-foot space, not a scaled-down copy of a whole-house system. Setback rules – the distance a structure must sit from property lines – vary by lot size and zoning, and HOAs in communities like Greer Ranch and The Colony add their own review step on top of the city’s process. None of this is a reason to hesitate. It’s a reason to work with someone who has already navigated it.
Our Main Murrieta Services
Murrieta homeowners call us most often about two projects: building a new ADU in the backyard, and adding square footage to the existing house when the family outgrows the floor plan. Here’s what each one looks like on the ground in Murrieta.
ADU Builders in Murrieta
A Murrieta ADU is usually a detached unit in the rear yard, though we also build garage conversions and junior ADUs (JADUs) inside the existing home. The most common path we see is a one-bedroom, one-bath unit between 450 and 750 square feet, placed where the lot’s setbacks allow. Prefab options from Abodu and Dvele can cut months off the build time compared to site-built framing. We handle the site survey, foundation, utility connections, and the city’s permitting review. Want the full breakdown? See ADU Builders in Murrieta.
Home Addition Contractor in Murrieta
A home addition in Murrieta often means extending the back of the house to add a family room, a primary suite, or a second story over an existing single-story footprint. The structural work matters here because many 1990s homes were built with roof framing that wasn’t designed to carry a second story. We bring in a structural engineer, confirm the foundation can handle the load, and design the connection so the new space doesn’t feel tacked on. Written pricing applies the same way it does on an ADU. Read the full scope at Home Addition Contractor in Murrieta.
Room Addition Contractor in Murrieta
A room addition is the smaller cousin of a full home addition – a single bedroom, a home office, or a laundry room bumped out from the existing footprint. In Murrieta, we see a lot of homeowners adding a ground-floor bedroom for aging parents or a dedicated work-from-home space. These jobs usually fall in the $45,000 to $90,000 range depending on whether plumbing is involved. The permitting path is simpler than a full addition, but we still pull every permit and pass every inspection. Details are on the Room Addition Contractor in Murrieta 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 Murrieta
We build ADUs and additions with Abodu, Cover, and Mighty Buildings, plus James Hardie cladding for the exterior. If you already have a brand preference, we’ll quote it. If not, we’ll show you the trade-offs in person. See the full list on our brands page. Parts are sourced through our Inland Empire office, so ordering and delivery are coordinated without shipping delays running the schedule.
Pricing for ADU Company in Murrieta, CA
| Service | Typical range in Murrieta |
|---|---|
| Detached ADU, 450 sq ft | $180,000 – $240,000 |
| Detached ADU, 750 sq ft | $260,000 – $320,000 |
| Garage conversion ADU | $130,000 – $190,000 |
| Junior ADU (JADU) inside the home | $80,000 – $140,000 |
| Home addition, single story | $150,000 – $280,000 |
| Second-story addition | $220,000 – $400,000 |
| Room addition, no plumbing | $45,000 – $75,000 |
| Room addition with bathroom | $70,000 – $120,000 |
What pushes a Murrieta quote higher: lot slope, soil conditions, HOA review timelines, and how far the new foundation has to reach for utilities. Every project starts with a written price before any work begins, so the number you approve is the number you pay.
Neighborhoods We Serve in Murrieta
We work across Murrieta, from the established tracts around California Oaks Road to the newer communities east of the 215. Typical scheduling response for a site visit in Murrieta is within a few business days, depending on how many estimates are already on the calendar for that week.
- Copper Canyon
- Greer Ranch
- The Colony
- Murrieta Hot Springs area
- Clinton Keith Road corridor
Service Area – Cities Near Murrieta
Our Murrieta crews also take projects in the surrounding Temecula Valley and Inland Empire communities. If you’re in a nearby city and weighing an ADU or addition, we can help there too: Wildomar, CA, Lake Elsinore, CA, Temecula, CA, and Menifee, CA.
Serving Murrieta, CA - Our Local Coverage Area
We’re based in the Murrieta 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 Murrieta
We schedule site visits across Murrieta most weeks, and a typical first visit happens within a few business days of your call. Scheduling is coordinated from our Inland Empire office, so you get a confirmed arrival time, not a four-hour window.
Some Murrieta HOAs, including Greer Ranch and The Colony, require their own architectural review before the city will issue permits. That review typically adds a few weeks. We prepare the submittal package for you and track it through both reviews.
Yes. Every Murrieta project starts with a written line-item price, so you know exactly what you’re paying before a single shovel turns. Call (903) 568-7222 to schedule your 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 Murrieta Customers Say
"Booked a consult online and met the project manager two days later. Weekly progress updates arrived by text with photos. ADU finished on schedule."
- Hannah W."Clean, quiet crew. They respected the neighbors, kept noise to working hours, and swept the driveway every evening."
- Hope C."Communication was the best part. I always knew what was happening that week without having to ask."
- Dolly N.
