A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Stevenson Ranch, CA
Adding an ADU or home addition in Stevenson Ranch means working with a community built on larger lots, HOA-governed streets, and hillside grading that shapes what you can build and where. Most detached ADUs here run $180,000 – $320,000 before site work, and the neighborhoods around Pico Canyon Road and Stevenson Ranch Parkway each carry their own setback and HOA review realities. We’re Sutton ADU Builders, and we put a written price in your hands before any work starts. Call (472) 248-8213 for a free estimate.
Why Stevenson Ranch Homes Are Different
Stevenson Ranch was master-planned in the late 1980s and built out largely through the 1990s and early 2000s, which means the housing stock skews newer than older Santa Clarita Valley neighborhoods but still predates California’s modern ADU-friendly building codes. That matters: many properties were platted before detached ADUs were a recognized use, so setbacks, easements, and HOA architectural guidelines often need a closer reading than homeowners expect.
The terrain is the other defining factor. Much of Stevenson Ranch sits on gently graded slopes with engineered drainage, so adding a foundation means accounting for soil movement and lot-line slope. We regularly see projects near The Ranch at Pico Canyon and along Hemingway Avenue where a site plan that looks simple on paper needs a grading check before the first permit is pulled. Summer heat is real here too – insulation choices and HVAC sizing for a new ADU get more attention than they would in a coastal zip code.
Permits run through Los Angeles County, not a local city building department, which changes timelines and plan-check expectations. HOAs in many Stevenson Ranch tracts review exterior elevations and rooflines, which is why we handle that paperwork early so the build itself doesn’t stall.
Our Main Stevenson Ranch Services
Most Stevenson Ranch homeowners call us about one of two things: adding a detached ADU for rental income or multigenerational housing, or expanding the main house with a room addition. Here’s how each works here.
Home Addition Contractor in Stevenson Ranch
A home addition in Stevenson Ranch usually means expanding a ground-floor footprint into a side or rear yard, or building up over an existing single-story section. HOA review is common, and the slope of many lots means the foundation plan has to be engineered to match the surrounding grade. We handle the county permit, the HOA submittal, and the build itself, with a written price before demolition starts. Home Addition Contractor in Stevenson Ranch
ADU Builders in Stevenson Ranch
Detached ADUs are the most requested project in Stevenson Ranch, particularly on the larger lots near Pico Canyon and along Stevenson Ranch Parkway. The county’s ADU rules are friendlier than the HOA’s, and we know which design choices get through architectural review faster – roof pitch, exterior finish, and window placement all come under scrutiny. Prefab and panelized options from Abodu, Dvele, and Cover can shorten site time substantially. ADU Builders in Stevenson Ranch
Room Addition Contractor in Stevenson Ranch
A room addition – a new bedroom, a home office, a larger kitchen – fits a different budget profile than a full ADU, but Stevenson Ranch’s HOA and grading realities still apply. We see a lot of these on properties where the existing floor plan is tight but the lot has room on one side. The work typically moves faster than a detached build because utilities and roofline are already anchored to the house. Room Addition Contractor in Stevenson Ranch
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 Stevenson Ranch
We work with prefab and panelized ADU systems from Abodu, Cover, and Dvele, plus James Hardie exterior cladding on both ADUs and room additions. Parts and finish materials for these brands are ordered directly to the Stevenson Ranch site, which keeps lead times predictable. See our brands for the full list and what each system does best.
Pricing for ADU Company in Stevenson Ranch, CA
| Service | Typical range in Stevenson Ranch |
|---|---|
| Detached ADU (400 – 800 sq ft, prefab) | $180,000 – $280,000 |
| Detached ADU (800 – 1,200 sq ft, custom) | $260,000 – $380,000 |
| Garage conversion to ADU | $120,000 – $190,000 |
| Room addition (200 – 400 sq ft) | $90,000 – $160,000 |
| Room addition (400 – 700 sq ft) | $140,000 – $230,000 |
| Kitchen extension | $110,000 – $180,000 |
| Primary suite addition | $130,000 – $220,000 |
| Second-story addition (400 – 600 sq ft) | $210,000 – $330,000 |
| Site prep and grading (typical lot) | $8,000 – $25,000 |
| HOA submittal and county permit handling | $3,500 – $7,500 |
In Stevenson Ranch, two things push prices higher than flat-lot communities: hillside grading and HOA-mandated exterior finishes. The written price we give you before work starts includes the permits, the HOA package, and the build – no change orders passed silently to the bill.
Neighborhoods We Serve in Stevenson Ranch
We cover the full Stevenson Ranch area, from the Pico Canyon corridor to the tracts off Hemingway Avenue and The Ranch at Pico Canyon. Response time for an initial site visit is usually within a few business days, and we schedule around HOA board-meeting cycles when architectural review is on the critical path.
- The Ranch at Pico Canyon
- Pico Canyon Road area
- Stevenson Ranch Parkway corridor
- Hemingway Avenue tracts
- Northbridge and adjacent neighborhoods
Service Area – Cities Near Stevenson Ranch
Sutton ADU Builders serves Stevenson Ranch and the surrounding Santa Clarita Valley communities. If you’re just over the line in Newhall, CA, Valencia, CA, Santa Clarita, CA, or Castaic, CA, the same written-price and Threshold Verified crew standards apply. Dispatch and scheduling are coordinated from our Los Angeles office; crews serve Stevenson Ranch locally.
Serving Stevenson Ranch, CA - Our Local Coverage Area
We’re based in the Stevenson Ranch 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 Stevenson Ranch
We typically schedule an initial site visit within a few business days of your call. Stevenson Ranch HOA review timelines are separate from our scheduling – we often walk the lot and prepare the written price while the HOA package is still in process. Call (472) 248-8213 to get on the schedule; the estimate is free.
Most Stevenson Ranch HOAs require architectural review for any new structure visible from the street, including detached ADUs. We prepare and submit the HOA package as part of the project, and our pricing includes that work. County permits run through Los Angeles County, and we pull those too. Call (472) 248-8213 for a written quote that covers both.
No. The price we give you in writing before work begins is the price you pay, unless you ask for a change to the scope. The 365-Day Done Right Promise covers defects in workmanship for one full calendar year from project completion, and if any element fails in that window, we send a second visit at no charge. Call (472) 248-8213 with your project details and we’ll put the number on paper.
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 Stevenson Ranch Customers Say
"Insulated the walls and ceiling properly. It stays comfortable even in July."
- Tamika W."They handled the drawings and the permit paperwork for us. All I had to do was pick the finishes."
- Rosa M."Every crew member was vetted and carried a badge, which matters when they are around your family for months. Tidy site every day."
- Daniel F.
