A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Santa Clarita, CA
Fielding ADU Builders handles accessory dwelling units, garage conversions, and room additions across Santa Clarita. Most of the homes here were built between the 1960s and the early 2000s, and the lots range from tight Valencia tract parcels to larger Canyon Country horse properties. That spread changes how we approach foundation work, setbacks, and access. If you’re pricing an ADU or addition in Santa Clarita, call (361) 315-4177 and we’ll put a written number in front of you before any work starts.
Why Santa Clarita Homes Are Different
Santa Clarita is one of the hotter, drier corners of Los Angeles County. Summer temperatures routinely pass 100 degrees, which affects how we detail insulation, roof ventilation, and window placement on an ADU or addition. It also means exterior materials take a beating from UV exposure, so we lean toward long-life products like James Hardie siding rather than materials that fade or warp within a few seasons.
The housing stock varies enough to matter. Valencia and Stevenson Ranch are mostly planned communities with HOAs and design-review committees that want to see plans and material samples before work begins. Canyon Country and parts of Newhall have older, more varied lots where we deal with sloped terrain, undersized electrical panels, and septic systems instead of sewer lines. Each one changes the scope: an ADU in Valencia may spend more time on HOA approval, while one in Canyon Country may spend more on grading and foundation work.
Setbacks are the quiet issue on many Santa Clarita ADU projects. The state has relaxed ADU rules, but the city still enforces its own zoning standards, and older lots often sit tighter to the property line than newer ones do. When a client needs a setback variance, the city’s written permission to build closer to the line than the standard rule allows, we pull that paperwork as part of the permit package rather than leaving it to the homeowner.
Our Main Santa Clarita Services
Santa Clarita homeowners call us most often for three things: a detached ADU in the backyard, a garage conversion that turns dead space into rentable or family space, and a room addition that keeps the house from feeling small. Each one has its own page with pricing and specifics.
Room Addition Contractor in Santa Clarita
A room addition in Santa Clarita usually means extending the back or side of the house, matching the original roofline, and tying into the existing foundation. On the older Canyon Country and Newhall lots, we often find slab edges that have shifted over the years, which means a little more concrete work before framing can start. HOAs in Valencia and Stevenson Ranch typically want the addition to match the original elevation and exterior finish. Room Addition Contractor in Santa Clarita has the full breakdown.
Garage Conversion Contractor in Santa Clarita
Garage conversions here run into three common conditions: a slab floor that needs leveling, a water heater or panel that sits in the garage and has to be relocated or enclosed, and a width that works for a studio or one-bedroom but rarely a full two-bedroom. California code requires a replacement parking solution on some conversions, and the city checks that during permit review. Garage Conversion Contractor in Santa Clarita covers the local specifics.
ADU Builders in Santa Clarita
Detached ADUs in Santa Clarita are most often built as prefab or modular units on the flatter Valencia and Stevenson Ranch lots, or as site-built structures where a Canyon Country or Newhall lot slopes. We work with Abodu, Cover, and Dvele on the prefab side, and conventional framing where the terrain calls for it. Utility connections, fire sprinkler requirements, and the city’s plan-check queue all shape the timeline. ADU Builders in Santa Clarita lays out the options and price ranges.
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 Santa Clarita
We build with the platforms Santa Clarita homeowners already compare: Abodu, Cover, Dvele, and Mighty Buildings for prefab units, plus conventional construction with James Hardie siding. See our brands for what each one offers, what it costs, and what fits a standard Santa Clarita lot.
Pricing for ADU Company in Santa Clarita, CA
| Service | Typical range in Santa Clarita |
|---|---|
| Detached ADU (prefab, 400 – 600 sq ft) | $140,000 – $220,000 |
| Detached ADU (site-built, 500 – 800 sq ft) | $180,000 – $300,000 |
| Garage conversion (studio, 250 – 400 sq ft) | $80,000 – $130,000 |
| Garage conversion (one-bedroom with kitchen) | $110,000 – $170,000 |
| Room addition (200 – 300 sq ft bedroom/bath) | $90,000 – $150,000 |
| Room addition (400 – 600 sq ft family room) | $140,000 – $220,000 |
| Kitchen extension (150 – 250 sq ft) | $80,000 – $130,000 |
| Foundation and grading work (sloped lots) | $15,000 – $45,000 |
| Electrical panel upgrade (if required) | $3,500 – $6,500 |
| HOA submittal and design review package | $1,500 – $4,000 |
Sloped lots in Canyon Country and Newhall push foundation and grading costs toward the top of those ranges. HOA communities add submittal work and, sometimes, material requirements that change the finish cost. Whatever the number comes out to, it goes in writing before work starts, and it stays the number on the final invoice, no change orders at the door.
Neighborhoods We Serve in Santa Clarita
We work across the whole Santa Clarita Valley, which means our crews are in every part of the city in a typical month. Scheduling depends on permit status and crew availability, not on which side of the 14 freeway you live on.
- Valencia
- Canyon Country
- Newhall
- Stevenson Ranch
- Saugus
Service Area – Cities Near Santa Clarita
Most of our Santa Clarita work stays within the city itself, but we also take projects in the adjacent communities that share the same valley and building conditions. That includes Valencia, CA, Canyon Country, CA, Newhall, CA, and Stevenson Ranch, CA. If you’re just outside those lines, call (361) 315-4177 and we’ll tell you straight whether we can get a crew there.
Serving Santa Clarita, CA - Our Local Coverage Area
We’re based in the Santa Clarita 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 Santa Clarita
Plan for five to nine months from signed contract to final inspection. The city’s plan-check queue, HOA design review in Valencia and Stevenson Ranch, and prefab factory lead times are the three variables that move the schedule most. A garage conversion can run shorter; a sloped-lot ADU in Canyon Country can run longer. Call (361) 315-4177 and we’ll give you a realistic window for your specific lot.
If the property has an HOA, yes, in most cases. California law limits how much an HOA can restrict an ADU, but the association still controls design review, construction hours, and sometimes material choices. We submit the package and handle the back-and-forth, which is the part homeowners find most tedious. That submittal work is included in the written price.
No. The price goes in writing before any work begins, and the number you approve on day one is the number on the final invoice. If we uncover something unexpected in the ground or behind the walls, we bring it to you with a written change order and get your approval before spending a dollar. It’s the same written-price-first policy we apply to every project, in Santa Clarita or anywhere else.
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 Santa Clarita Customers Say
"Insulation, drywall, and finishes were all well done. Feels like part of the house."
- Pete O."Built a detached ADU behind our house. The builder is a veteran and runs the site like a platoon: schedule posted, crew on time, everything labeled. Finished within a few days of the date."
- Ken W."Room addition over the back patio. Framing is square, windows are tight, and the roofline matches."
- Danny L.
