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
Fielding ADU Builders handles ADU construction, garage conversions, and room additions in Granada Hills, CA. Most of the housing stock here was built between the 1950s and 1970s, which means flat lot grades, slab foundations, and plenty of single-story ranches that respond well to attached ADUs and garage conversions. We price every job in writing before work begins, and every project is backed by the Garrison Standard, a written one-year guarantee. Call (361) 315-4177 to schedule a free estimate.
Why Granada Hills Homes Are Different
Granada Hills sits in the northern San Fernando Valley, where summer temperatures routinely cross 100 degrees and winter nights can dip into the 40s. That swing matters for ADU work. Insulation choices, window orientation, and HVAC sizing all have to account for a climate that runs hot and dry most of the year. We see a lot of homes with original single-pane windows and attic insulation that has settled to almost nothing, so any room addition or conversion here usually includes bringing the new space’s envelope up to current Title 24 energy standards.
Lot sizes tend to be generous by Los Angeles standards, which gives homeowners real options for detached ADUs in the backyard. Many Granada Hills properties sit on 7,000 to 10,000 square foot lots with setbacks that allow a good-sized unit without a variance. But the hillside sections, particularly around the northern edge near the Santa Susana Mountains, have steeper grades and some properties fall under Hillside Construction rules, which change foundation and drainage requirements. We work through those specifics on a case-by-case basis, usually before the first plan is drawn.
Permits in Granada Hills go through the Los Angeles Department of Building and Safety. That means plan checks, inspections, and the occasional wait. The Garrison Code applies here: show up in the window, price in writing, by the book, leave it clean, stand behind it for a year. For ADU work, that means pulling the proper building permits, scheduling inspections, and not asking a homeowner to look the other way on anything.
Our Main Granada Hills Services
Granada Hills homeowners call us most about three projects: adding square footage to the main house, converting an attached garage into living space, or building a detached ADU in the backyard. Each has its own Granada Hills page with full detail.
Room Addition Contractor in Granada Hills
Room additions in Granada Hills typically extend the back or side of a ranch home to add a bedroom, a family room, or a primary suite. The flat lots and slab foundations common here simplify some of the work, but older homes often need electrical panel upgrades as part of the job. We bring the written price before demolition starts, and the addition is covered by the same one-year written guarantee as everything else we build. See Room Addition Contractor in Granada Hills for full pricing and process.
Garage Conversion Contractor in Granada Hills
Garage conversions are one of the fastest paths to extra living space in Granada Hills, because the structure already exists and the foundation is poured. What varies from house to house is how the garage was built: some attach cleanly to the roofline, others have a step-down floor or a low ceiling that needs framing adjustments. We insulate, drywall, run electrical, and bring the space up to code as living area, not storage. Full details are on the Garage Conversion Contractor in Granada Hills page.
ADU Builders in Granada Hills
A detached ADU in a Granada Hills backyard usually runs from a one-bedroom unit of about 400 square feet up to a two-bedroom of 800 or more, depending on lot size and setback rules. We build both conventional stick-frame units and work with prefab platforms like Abodu and Cover where the lot and budget make that the better call. The choice comes down to site access, timeline, and what the homeowner wants the finished unit to look like. Read the ADU Builders in Granada Hills page for specifics.
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 install and finish ADU platforms from Abodu, Cover, and Dvele across Granada Hills, plus conventional builds using James Hardie siding and Tuff Shed-style structures. See our brands for the full platform list and what each build method costs.
Pricing for ADU Company in Granada Hills, CA
| Service | Typical range in Granada Hills |
|---|---|
| Garage conversion | $80,000 – $140,000 |
| Detached ADU, prefab platform (Abodu, Cover) | $180,000 – $280,000 |
| Detached ADU, conventional build | $250,000 – $400,000 |
| Room addition (300 – 500 sq ft) | $90,000 – $170,000 |
| Room addition (primary suite) | $120,000 – $220,000 |
| Foundation work (slab on grade) | $12,000 – $30,000 |
| Electrical panel upgrade | $3,500 – $6,500 |
| Hillside foundation and drainage | $25,000 – $60,000 |
Prices in Granada Hills move with three things: hillside grading if the lot slopes, the condition of the existing electrical panel, and whether the property falls under Hillside Construction rules. Whatever the number is, it goes in writing before any work starts, and that written number is the number on the final invoice.
Neighborhoods We Serve in Granada Hills
We work across Granada Hills, from the flatter central sections near Balboa and Zelzah to the hillside streets north of Rinaldi. Response time for estimates in Granada Hills is typically same-week, and scheduling depends more on the building department’s plan-check queue than on which part of town the job sits in.
- Knollwood
- Balboa Highlands
- Old Granada Hills
- Beverly Ranches
- North Granada Hills (foothill streets)
Service Area – Cities Near Granada Hills
Our Granada Hills crews also cover the surrounding San Fernando Valley cities. We work regularly in San Fernando, CA, Northridge, CA, Porter Ranch, CA, and Chatsworth, CA. Dispatch and scheduling are coordinated from our Los Angeles office, but the crews that show up are the same Granada Hills teams on every job.
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 Granada Hills ADU projects run six to ten months from signed contract to final inspection. The biggest variable is the Los Angeles Department of Building and Safety plan-check queue, which we submit early and track steadily. Prefab ADUs from Abodu or Cover can shorten the on-site build phase significantly. Call (361) 315-4177 to get a realistic timeline for your specific lot.
Some Granada Hills neighborhoods have HOAs with architectural review requirements, but California state law overrides most HOA restrictions on ADUs. State ADU law allows one attached and one detached ADU on most single-family lots, regardless of HOA rules. We review your specific HOA’s covenants before the first plan is drawn, and we handle the written approvals as part of the permit package.
Yes, every job we do in Granada Hills is permitted through the Los Angeles Department of Building and Safety. That means plan checks, inspections, and a final sign-off. No permit board left blank. The permit costs are a line item in your written price, so there are no surprises when the city fee schedule comes due.
Call (361) 315-4177 to schedule your free Granada Hills estimate. Reed Calloway walks every job himself, and the written price you approve is the price you pay.
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
"Foundation and slab poured on schedule. Crew kept the yard orderly."
- Marian J."Garage conversion with a new bath and kitchenette. Permit was handled by them. Inspection passed first time."
- Sheila B."Honest feedback on what the lot could fit. Told me up front what would fit on the lot and what the setbacks would allow."
- Rita C.
