







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
Benson ADU Builders covers ADU and home addition work across Stevenson Ranch, CA, with one key difference you’ll feel before any permit gets filed: a written price before work starts. Stevenson Ranch homes run newer than most of the Santa Clarita Valley, which means flatter lots, stricter HOAs, and floor plans that were built with modern framing but not necessarily with an accessory dwelling unit in mind. We’ve built enough ADUs here to know exactly where those two realities collide, and we’ll walk you through it in plain English. Call us at (903) 568-7222 when you’re ready to talk numbers.
Why Stevenson Ranch Homes Are Different

Stevenson Ranch sits in one of the hotter, drier stretches of Los Angeles County, and that shows up in the building stock. Most single-family homes here date from the late 1990s through the 2010s, with stucco exteriors, tile or composite roofs, and lots engineered for tract-home efficiency. What that means for ADU work is specific: side-yard setbacks are tighter than in older neighborhoods, and many lots were graded flat along the Pico Canyon and Stevenson Ranch Parkway corridors. A prefab ADU from Abodu or Cover typically fits those widths better than a fully site-built stick frame, which is why we recommend them so often here.
The bigger variable in Stevenson Ranch is HOA governance. Most subdivisions fall under homeowners associations that require design review for any accessory structure, and some have their own color, height, and roof-pitch standards layered on top of county ADU rules. We help you prepare that submittal before you spend real money on plans. The payoff is worth it: finished ADUs in Stevenson Ranch consistently command strong rental interest from professionals working in Valencia and the surrounding business parks.
Our Main Stevenson Ranch Services
Stevenson Ranch homeowners call us most often about two things: building a backyard rental unit, and pushing out the footprint of the main house. Each is its own discipline with its own Stevenson Ranch page.
ADU Builders in Stevenson Ranch
A detached ADU in Stevenson Ranch usually means a compact one or two bedroom unit in the rear yard, about 400 to 800 square feet. We map your setbacks, check the HOA’s recorded conditions, and then price both prefab and site-built options so you can compare them side by side. Abodu and Cover units tend to move through Stevenson Ranch design review faster because their details are already documented. Read the full breakdown on our ADU Builders in Stevenson Ranch page.

Home Addition Contractor in Stevenson Ranch
A home addition in Stevenson Ranch usually falls on the rear or side of the existing structure, and it means extending your roofline and foundation to match. Tract-home lots here were laid out for maximum density, so most additions are modest in footprint, often 250 to 500 square feet. That makes precise site measurements and a clean structural tie-in the central job. We carry James Hardie cladding to match your existing stucco or lap profile so the addition does not look like an afterthought. Details are on our Home Addition Contractor in Stevenson Ranch page.

Room Addition Contractor in Stevenson Ranch
A room addition in Stevenson Ranch usually means one of three things: a fifth bedroom, a home office with a separate entrance, or a ground-floor suite for an aging parent. Because many Stevenson Ranch homes sit on compact, HOA-controlled lots, even a 200-square-foot room requires a careful walkthrough of your setbacks and floor-area limits. We scope the foundation, framing, insulation, and drywall in one written quote so there are no surprise line items later. See the specifics on our Room Addition Contractor in Stevenson Ranch 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 Stevenson Ranch
We build with and service the brands Stevenson Ranch homeowners actually ask for by name: our brands include Abodu, Cover, and Dvele prefab ADUs, plus James Hardie cladding for additions. Given this community’s HOA-driven design review, having documented, code-compliant manufacturer specs ready for submittal cuts weeks off your timeline, and that’s how we prefer to work.
Pricing for ADU Company in Stevenson Ranch, CA
Stevenson Ranch pricing sits at the middle-to-upper end of the Santa Clarita Valley, largely because of HOA compliance work and upgraded finishes buyers expect in this neighborhood. Here are the ranges we quote most often.
| Service | Typical range in Stevenson Ranch |
|---|---|
| Detached ADU (prefab, 400 – 600 sq ft) | $180,000 – $320,000 |
| Detached ADU (site-built, 600 – 800 sq ft) | $260,000 – $420,000 |
| Garage conversion ADU | $120,000 – $225,000 |
| JADU (junior ADU, inside existing footprint) | $85,000 – $155,000 |
| Home addition (250 – 500 sq ft) | $150,000 – $350,000 |
| Room addition (150 – 300 sq ft) | $90,000 – $210,000 |
| ADU plan set + HOA submittal package | $8,000 – $18,000 |
| Site prep, grading, and utility trenching | $15,000 – $45,000 |
| Kitchen or bath inside ADU | $28,000 – $75,000 |
Two things push prices up in Stevenson Ranch specifically: HOA-required elevation changes and soil that compacts differently on graded lots along Pico Canyon. Whatever the final number is, you get it in writing before any work starts, and the 365-Day Done Right Promise means we come back and fix it if it is not right within a year. Call (903) 568-7222 for a line-item quote, not a verbal ballpark.
Neighborhoods We Serve in Stevenson Ranch
We work across the full Stevenson Ranch footprint, from the older subdivisions near The Old Road up through the newer parcels along Pico Canyon Road. Most of our crews stage near the Valencia edge and roll into Stevenson Ranch within about 30 minutes.
- Pico Canyon
- Stevenson Ranch Parkway corridor
- The Old Road area
- Southern Oaks
- Rancho Tesoro (adjacent)
Service Area – Cities Near Stevenson Ranch
Beyond Stevenson Ranch, we regularly take on ADU and addition projects in Newhall, CA, Valencia, CA, Santa Clarita, CA, and Castaic, CA. If you’re on the edge of Stevenson Ranch and one of those cities, call us and we’ll confirm coverage and scheduling in one conversation.
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

Scheduling starts with a free on-site walkthrough, and we can typically get a written proposal to you within about a week. Actual construction start depends on HOA design review and county permit intake, which we package and submit for you. Call (903) 568-7222 to get on the calendar.
Yes, in most cases. California law requires cities and HOAs to permit ADUs, but Stevenson Ranch HOAs can still impose design standards on height, color, and roof pitch. We prepare your submittal to match the HOA’s recorded conditions before you commit. Call us for an exact review of your tract.
No. You receive a written price before any work starts, and that is the price unless you change the scope. The Relay Visibility Guarantee means no scope creep billed after the fact. If it is not done right within 365 days, we make it right.
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
"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.



