







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Reseda, CA
Adding an ADU, a room addition, or a full home addition in Reseda means navigating a particular mix of 1950s – 1970s ranch homes, long narrow lots, and San Fernando Valley heat that pushes real load onto any new build. Most Reseda homeowners want to know whether their lot can even fit a detached structure, and what the final number will be before they commit. We answer both questions with a written price before any work begins. Call (472) 248-8213 and we’ll walk you through your options in plain language.
Why Reseda Homes Are Different

Reseda’s housing stock is dominated by single-story ranches and mid-century builds, most of them 50 to 70 years old. That age matters. Original foundations in this area were rarely engineered for a second structure’s drainage and access demands, so a detached ADU often means upgrading the existing sewer lateral or running new electrical from the panel rather than piggybacking on old work. The Valley’s summer heat is also a design input here, not an afterthought. A west-facing ADU in Reseda without adequate insulation and window orientation will be unusable from June through September, and we spec every build for that reality. On the permitting side, Reseda sits within the City of Los Angeles, which means ADU plan checks follow the state’s streamlined rules but still go through LADBS, and that process rewards a contractor who has done it before and knows what a plan checker will flag on the first pass.
You’ll also see a lot of homes with long driveways and detached garages set at the back of the lot, which is actually good news for an ADU conversion. Those garages often have the setbacks already in place. A setback, for the uninitiated, is the required gap between your new structure and the property line, and in Reseda’s R1 zones that’s typically 4 feet for a detached ADU, though the specifics vary by lot dimensions. Where we see real variance is in the front half of the lot: many Reseda properties have mature trees that can’t be removed without a separate review, and that single fact can move your buildable footprint by several feet. We flag it early so the estimate doesn’t quietly change later.
Our Main Reseda Services
Reseda homeowners call us about three things most often: adding a whole new structure to the lot, converting or expanding what’s already there, and building a dedicated ADU for family or rental income. Each has its own Reseda page with pricing and detail, linked below.
Home Addition Contractor in Reseda
A home addition in Reseda usually means bumping out the back of a ranch home or going up over an existing single-story footprint. The local wrinkle is that many of these homes were built with post-and-beam construction, not modern shear-wall framing, so tying new square footage into the old floor plan takes an engineer who knows Valley-era framing. We handle the structural drawings, the LADBS submittal, and the build itself, and you get a written line-item price before any work starts. See the full scope on the Home Addition Contractor in Reseda page.

ADU Builders in Reseda
Detached ADUs in Reseda run the gamut from 400-square-foot studios behind an existing garage to 1,200-square-foot two-bedroom units with their own address. The most common request we get is a detached unit in the rear yard of a lot that already has a pool, which compresses the buildable area and changes the foundation type. We bring prefab options from brands like Abodu and Dvele when the site allows, or stick-frame on site when it doesn’t. Details and real Reseda price ranges are on the ADU Builders in Reseda page.

Room Addition Contractor in Reseda
A room addition is the smallest version of this work, but it still touches the same systems: foundation, roof tie-in, electrical, and a final inspection. In Reseda, we often see a single-bedroom addition added to the back corner of a house to serve as a home office or a ground-floor bedroom for an aging parent. The job has to respect the existing roofline and the drainage grade of the lot, both of which are site-specific and both of which we measure before quoting. You can read the full breakdown on the Room Addition Contractor in Reseda 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 Reseda
We work directly with prefab and modular ADU lines including Abodu, Cover, and Dvele, and we’re experienced with James Hardie exterior systems for any Reseda addition that needs a fire-resistant, low-maintenance cladding. If your site suits a factory-built unit, we’ll tell you honestly; if it doesn’t, we’ll say that too. See our brands page for the full list.
Pricing for ADU Company in Reseda, CA
| Service | Typical range in Reseda |
|---|---|
| Detached ADU, 400 – 600 sq ft | $180,000 – $260,000 |
| Detached ADU, 600 – 900 sq ft | $240,000 – $320,000 |
| Detached ADU, 900 – 1,200 sq ft | $300,000 – $420,000 |
| Garage conversion to ADU | $120,000 – $200,000 |
| Room addition, 250 – 400 sq ft | $90,000 – $150,000 |
| Room addition, 400 – 600 sq ft | $130,000 – $200,000 |
| Home addition, 600 – 1,000 sq ft | $220,000 – $350,000 |
| Site work, utility trenching, and drainage (add-on) | $15,000 – $40,000 |
| Plans, engineering, and LADBS permits (add-on) | $8,000 – $20,000 |
What pushes a Reseda price up is usually what’s underground: an old cast-iron sewer line that needs replacing, or a panel that’s already maxed out and can’t accept a second dwelling’s load. Those items show up in the written estimate as their own line items, so you see exactly what you’re paying for. That written price stays the price: no change orders added silently, no scope creep passed through to the bill, and the 365-Day Done Right Promise covers the completed work for a full calendar year.
Neighborhoods We Serve in Reseda
We work across all of Reseda, from the blocks north of Vanowen Street down to the edge of Tarzana near Victory Boulevard, and east to west between Corbin and White Oak. Scheduling works around Valley traffic patterns, so we quote the job assuming a typical 20-to-30-minute crew arrival window from our Los Angeles coordination office.
- Reseda Ranch
- North Reseda, near Reseda Boulevard and Saticoy
- The streets around Reseda Park
- South Reseda, bordering Tarzana
- East Reseda, near the Northridge line
Service Area – Cities Near Reseda
Our crews cover Reseda and the surrounding San Fernando Valley communities on a rotating schedule. If you’re in Tarzana, CA, Northridge, CA, Encino, CA, or Canoga Park, CA, we can send the same Threshold Verified crew standards and the same written-price-before-work promise your way.
Serving Reseda, CA - Our Local Coverage Area
We’re based in the Reseda 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 Reseda

Scheduling depends on LADBS plan-check timing and whether the project needs utility work. Most Reseda ADUs move from signed estimate to first inspection within three to six weeks. We don’t pad the timeline, and you’ll always have a named contact who can tell you where the plans sit.
If your street is part of an HOA, you may need to file architectural review alongside the city permit, but California law sharply limits an HOA’s ability to block an ADU outright. We’ll tell you which documents your specific HOA requires, and we handle the city side in full. Call (472) 248-8213 if you’re unsure whether your Reseda block has an HOA at all.
No. You receive a written, line-item price before any tool is lifted, and that is the price. If hidden site conditions surface, we stop and show you a written change order for your approval before proceeding; nothing gets added to the bill silently. The 365-Day Done Right Promise backs the workmanship for a full year from completion. Call (472) 248-8213 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 Reseda Customers Say
"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."Itemized estimate with allowances laid out. Final cost was within a hair of the quote."
- Naomi R."Backyard ADU for my mother. The project manager showed ID and walked me through the permit steps, the foundation plan, and the schedule. Moved her in on time."
- Margaret C.



