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 homeowners call us when they want a straight answer about adding square footage. Building an ADU, a room addition, or a full home addition here means working with hillside lots, older ranch-style homes, and a permit process that rewards patience. As an ADU company serving Granada Hills, we deliver written pricing before any work starts and a 365-Day Done Right Promise on every project. Call (472) 248-8213 for a free estimate.
Why Granada Hills Homes Are Different
Granada Hills is not a flat, predictable grid. Much of the housing stock dates from the 1950s and 1960s, with ranch-style homes on generous lots that look deceptively simple until you start digging. Hillside foundations, older gas and water lines, and soil conditions vary block to block. Some lots near O’Melveny Park sit on steeper grades that affect drainage plans and foundation engineering. Homes north of Rinaldi often need retaining wall considerations before an addition can be permitted. The climate helps: mild, dry summers mean framing and exterior work rarely lose days to weather, but the same sun that makes Granada Hills pleasant also bakes stucco and roofing, so material choices matter. HOA requirements are rare outside a few pockets, but the City of Los Angeles permit process applies to every project, and ADU plans must clear zoning review, setback checks, and utility sign-offs. We walk Granada Hills homeowners through each step in plain language, so no surprise appears at plan check.
Our Main Granada Hills Services
Most Granada Hills homeowners reach out about one of three things: a detached ADU in the backyard, a garage conversion or attached addition, or a room addition that extends the existing footprint. Each has its own Granada Hills page with pricing and detail.
Home Addition Contractor in Granada Hills
A home addition in Granada Hills typically means extending a ranch home outward or converting underused space. Older homes often need foundation upgrades or seismic retrofitting before walls go up, and hillside lots can trigger additional engineering review. We handle the full scope: design, permits, foundation, framing, weatherproofing, and finishes. Written pricing comes first, so you know the number before we start. Home Addition Contractor in Granada Hills
ADU Builders in Granada Hills
Detached ADUs in Granada Hills work well on the wide lots common south of Rinaldi and around Balboa. The biggest variables are site prep, utility trenching, and whether your lot triggers hillside grading rules. We have direct experience with Abodu, Cover, and Dvele product lines, which means we can tell you honestly when a prefab makes more sense than stick-built. Every ADU estimate includes a written price and a clear scope. ADU Builders in Granada Hills
Room Addition Contractor in Granada Hills
A room addition in Granada Hills usually means adding a bedroom, a family room, or a home office without changing the home’s overall footprint. The work is smaller than a full addition, but the permit path is the same. We’ve found that homes with original 1960s electrical panels often need a panel upgrade to pass inspection, which we include in the written price whenever we can see it coming. No surprise invoices. Room Addition Contractor in Granada Hills
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 work with Abodu, Cover, Dvele, and Mighty Buildings. Parts availability means most warranty corrections happen within days, not weeks. See our brands for the full list.
Pricing for ADU Company in Granada Hills, CA
| Service | Typical range in Granada Hills |
|---|---|
| Detached ADU (400 – 600 sq ft) | $180,000 – $320,000 |
| Detached ADU (600 – 800 sq ft) | $220,000 – $380,000 |
| Detached ADU (800 – 1,000 sq ft) | $280,000 – $450,000 |
| Garage conversion ADU | $140,000 – $240,000 |
| Attached ADU | $150,000 – $280,000 |
| Home addition (per sq ft) | $250 – $450 |
| Room addition (200 – 400 sq ft) | $90,000 – $180,000 |
| Site prep and foundation | $25,000 – $70,000 |
| Utility trenching and hookups | $10,000 – $30,000 |
| Permit and plan check fees | $8,000 – $20,000 |
Hillside grading and soil reports push costs higher in Granada Hills than on flat-lot cities nearby. The written price we give you before work starts is the price you pay; anything that changes gets agreed to in writing first.
Neighborhoods We Serve in Granada Hills
Scheduling across Granada Hills is straightforward, and we typically reach most neighborhoods within a day for site visits. Homeowners reach us from across the 91344 and 91394 ZIP codes.
- Balboa Highlands
- Knollwood
- North of Rinaldi
- O’Melveny Park area
- Granada Hills South
Service Area – Cities Near Granada Hills
We regularly work in Granada Hills and the surrounding San Fernando Valley communities. Our service area includes San Fernando, CA, Northridge, CA, Porter Ranch, CA, and Chatsworth, CA. Scheduling is coordinated from the brand’s Los Angeles office; crews serve Granada Hills locally.
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
Most ADU projects in Granada Hills run 8 to 14 months from design to final inspection. Plan check with the City of Los Angeles is usually the longest phase, not construction itself. Call (472) 248-8213 to talk through your timeline.
Yes. We prepare drawings, manage plan check, pull permits, and coordinate inspections for every Granada Hills project. If an HOA requires approval, we provide the documents and help you submit them. The written price you get includes permit management.
Granada Hills soil and weather can expose settling cracks or drainage issues months after a build finishes. The 365-Day Done Right Promise covers workmanship defects for one full calendar year from project completion. If something fails, we make it right, no haggling. Call (472) 248-8213 for an 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 Granada Hills 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.
