A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Granada Hills, CA
Granada Hills is one of the few pockets of the San Fernando Valley where postwar ranch homes still sit on genuinely large lots, and that changes everything about ADU construction. Single-story, wood-frame ranches from the 1950s through the 1970s dominate the neighborhood, and most of them are on 7,500 square feet or more. That rear-yard space means ADUs here tend to be full standalone units, not garage conversions shoehorned into a tight side yard. Pair that with the hot, dry summers, Santa Ana wind season, and gently sloping terrain, and you get a very different build than what you’d see in the flatter parts of the Valley. Call (661) 219-7906 when you’re ready to talk numbers.
Why Granada Hills Homes Are Different
Most Granada Hills homes were built before modern energy codes existed, which means two things when you’re planning an ADU. First, the existing electrical panel is usually undersized for the added load of a new unit, so expect a panel upgrade as part of the scope. Second, the homes themselves lack modern insulation, but your new ADU won’t have that problem if it’s designed for the local climate. Granada Hills gets hot, dry summers, and the Santa Ana winds in fall can hit framing crews hard if the schedule isn’t planned around them. We orient ADUs to minimize western sun exposure, spec insulation that holds up through 100-degree July afternoons, and use sturdier framing details that stand up to wind gusts that regularly top 40 mph on the ridgelines.
The Knollwood area adds its own wrinkle. Many lots there slope gently toward the street, which sounds like a nuisance until you realize it’s an opportunity. A two-story ADU tucked at the rear of a sloping lot gives you a garage or storage bay below the living space, plus more privacy from the street than almost anywhere else in the Valley. That’s a pattern specific to Granada Hills, and it’s one reason the ADU market here has taken off since the city’s 2017 junior unit ordinance made smaller units viable on ranch-sized lots.
Our Main Granada Hills Services
Most Granada Hills homeowners reach out about one of three projects: a full standalone ADU, a home addition that expands the main house, or a room addition for a specific need. Each has its own Granada Hills page with pricing, timelines, and local specifics.
ADU Builders in Granada Hills
A Granada Hills ADU is usually a detached unit in the rear yard, built either site-built or from prefab panels from brands like Dvele, Boxabl, or Plant Prefab. The advantage here is the lot size: with 7,500 square feet or more to work with, you rarely have to compromise on setbacks. We handle the panel upgrade, foundation, utility trenching, and the build itself, and because the lots are large, we can often keep your driveway clear for the entire project. ADU Builders in Granada Hills has the full breakdown.
Home Addition Contractor in Granada Hills
A Granada Hills home addition often makes more sense than an ADU when you want connected living space: a larger kitchen, a ground-floor primary suite, a family room that opens to the backyard. These ranches were built with simple footprints, so adding on is usually structurally straightforward, but expect the same electrical panel and insulation upgrades we mentioned above. Sloping lots in Knollwood can mean a stepped foundation, which we price and plan for upfront. Home Addition Contractor in Granada Hills covers the specifics.
Room Addition Contractor in Granada Hills
A room addition is the smallest of the three, usually one or two rooms: a home office, a fourth bedroom, a dedicated laundry room. On Granada Hills ranch homes, these often bump out from the rear or side of the house, and the question is usually how the roofline ties in. We walk you through the options and how the local wind conditions affect which roof details make sense. Room Addition Contractor in Granada Hills has the full scope and pricing.
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 Granada Hills
We build with Dvele, Mighty Buildings, Boxabl, and Plant Prefab, depending on your lot, budget, and what you want the finished unit to feel like. More detail is on our brands page.
Pricing for ADU Company in Granada Hills, CA
| Service | Typical range in Granada Hills |
|---|---|
| Detached ADU (site-built) | $180,000 – $350,000 |
| Detached ADU (prefab, Dvele or Boxabl) | $160,000 – $300,000 |
| Junior ADU (JADU, garage conversion) | $80,000 – $140,000 |
| Home addition (full kitchen) | $90,000 – $160,000 |
| Home addition (primary suite) | $70,000 – $120,000 |
| Room addition (single room) | $45,000 – $75,000 |
| Room addition (two rooms) | $80,000 – $130,000 |
| Electrical panel upgrade | $3,500 – $6,500 |
What pushes a Granada Hills job toward the top of these ranges? Sloping lots in Knollwood that need stepped or retaining foundations, panel upgrades on older ranches, and wind-rated framing details. What doesn’t change: the price we give you in writing before work starts is the price you pay. No change orders, no scope creep billed after demo day.
Neighborhoods We Serve in Granada Hills
We work throughout Granada Hills, including the neighborhoods below. During our busiest season, our crews typically schedule Granada Hills ADU and addition projects within two to three weeks of the written estimate.
- Knollwood
- Granada Hills North
- Balmoral
- O’Melveny Park area
- Granada Hills South
Service Area – Cities Near Granada Hills
We also serve the surrounding Valley communities. If you’re just north or west of Granada Hills, take a look at Mission Hills, CA and San Fernando, CA. To the south, we cover Northridge, CA, and to the east, Sylmar, CA. Each of those pages covers the specifics for that city.
Serving Granada Hills, CA - Our Local Coverage Area
We’re based in the Granada Hills 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 Granada Hills
Yes. We pull all required city permits, schedule inspections, and stay on the job through final sign-off. You’ll see the permit status in our real-time tracking, and we don’t start any work until the permit is in hand. Call (661) 219-7906 with your address and we’ll map out what your project needs.
Most Granada Hills ADUs take four to seven months from permit to final inspection. Prefab units from Dvele or Boxabl tend toward the shorter end. Site-built units on sloping Knollwood lots are at the longer end. We give you a written timeline before work starts and update it as the job progresses.
Usually, yes. Most Granada Hills ranches were built with 100-amp panels, and a detached ADU adds meaningful load. We’ll assess your panel during the free estimate and include the upgrade in the written price if it’s needed, so there’s no surprise line item later. Call (661) 219-7906 to get started.
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 Granada Hills Customers Say
"Photos of each milestone, which I loved. Slab, framing, roof dry-in, each one came with a few pictures by text."
- Gwen D."Room addition off the kitchen. Framing, drywall, and paint all done well."
- Wade L."Great build. Inspection delay, the county's fault, pushed things a week, but updates were clear."
- Soo-jin P.
