ADU Builder & Home Additions in Granada Hills, CA
Source: https://www.remodelyourvibe.com/services/adus-additions/granada-hills
Last modified: 2026-09-24T00:00:00.000Z
Text part: 1 of 1
Full website text index | Services by city | Previous page | Next page
Image: Open-plan living room and kitchen with polished concrete floors
- Granada Hills
Design · Permit · Build
ADUs & Additions in Granada Hills
Detached ADUs, garage conversions and additions, from plans to move-in.
Book a Consultation Call 818-300-2393
Built for Granada Hills Homes
Granada Hills changes character as you head north. In the southern flats we are working postwar tracts with straightforward access and aging services. Toward the Santa Susana foothills the ground tilts, the brush starts, and hillside grading limits and fire-zone construction requirements come into play.
Balboa Highlands adds a third case entirely. The Eichler tract carries historic design review, so exterior changes there get handled as a preservation project, not a standard remodel.
Flat postwar tract lots dominate the southern half, while the northern foothills hold larger, sloping parcels with view orientation and descending rear yards that need retaining before they are usable.
We are a design-build team, which means the people who draw your project are the people who build it. Design, engineering, permits and construction run through one project manager and our own crews, so nothing gets lost in a handoff between a salesperson and a subcontractor. We are licensed, bonded and insured, CSLB license #1119054 .
Permits in Granada Hills: LADBS issues residential building, grading and pool permits here, with plan check and inspection handled through the Van Nuys Development Services Center. The terrain rises from south to north toward the Santa Susana Mountains, and parcels on the City's Designated Hillside Areas map fall under the Baseline Hillside Ordinance (No. 184,802), which limits grading quantity, floor area and height.
North of Rinaldi Street, the northwest portion is also in the Granada Hills 'K' Equinekeeping Supplemental Use District, and foothill properties near the mountains sit in or beside Very High Fire Hazard Severity Zone mapping with brush clearance and Chapter 7A obligations.
The Balboa Highlands tract, the 1962-64 Joseph Eichler subdivision designated in 2010, is a Historic Preservation Overlay Zone, so exterior alterations there require HPOZ design review through Los Angeles City Planning. Oaks and other protected species are common on the north side and need an Urban Forestry permit before removal or encroachment, and review length varies.
Permit details checked September 2026 against LADBS , LA City Planning and LAFD . Rules change, so we confirm them again for your parcel.
What We Build
- HPOZ-sensitive mid-century exterior work
- Hillside grading and retaining design
- Fire-zone hardscape and clearance planning
- Detached ADUs, ground-up
- Garage conversions to living space
- Junior ADUs within the main house
- Room additions and bump-outs
- Second-story additions
- Full kitchens and bathrooms in the ADU
- Separate utility metering where required
- Private entries, patios and landscaping
- Plans, engineering and city submittals
- Title 24 energy compliance
Local Conditions
What to Know in Granada Hills
These local conditions change the scope, the schedule and the budget.
01
The ground transitions from flat alluvial tract land in the south to sloping foothill terrain with shallow bedrock in the north, and an identical pool design prices very differently across that line.
02
Foothill streets narrow and steepen, which limits excavator size, gunite hose runs and concrete truck access on upper-elevation properties.
03
Postwar tracts in the flats commonly need a main panel upgrade and a sewer lateral assessment before pool equipment, a spa heater or a second dwelling is added.
04
Mid-century post-and-beam homes on slab floors require careful detailing where new openings, decks or additions meet the original structure and its exposed beams.
Areas we serve in Granada Hills:Balboa HighlandsKnollwoodGranada Hills NorthGranada Hills South
Investment
What It Costs in Granada Hills
Real Southern California price ranges, not teaser numbers.
Detached ADU
$150,000 to $400,000+
What moves it: square footage, finish level, utility runs, and site access; garage conversions typically run well below a ground-up detached build
Garage conversion ADU
$80,000 to $180,000
What moves it: whether the existing slab and framing meet current code, how far utilities have to run, and the finish level of the kitchen and bathroom
Plans, drawings and permit management
$4,500 to $25,000+
What moves it: project type and size, whether structural engineering, Title 24 or a soils report is required, and how many jurisdictions or review bodies are involved
Your lot, access and finishes set the price. We walk the site, then show you where every dollar goes.
Get a line-item price for your Granada Hills property
The Process
How We Work in Granada Hills
01
Feasibility
We check lot size, setbacks, utilities and access to confirm what your property will actually support.
02
Design & 3D
Layout, elevations and finishes, modeled in 3D so you approve the unit before submittal.
03
Plans & Permits
We prepare the full drawing set, handle engineering and Title 24, and manage the city submittal and corrections. In Granada Hills that submittal goes to Los Angeles Department of Building and Safety (LADBS).
04
Foundation & Framing
Site prep, foundation, framing and dry-in by our own crews.
05
Systems & Finishes
Electrical, plumbing, HVAC, insulation, then kitchen, bath and interior finishes.
06
Final Inspection
We pass final inspection, walk the unit with you and hand over the keys.
Questions
What Granada Hills Homeowners Ask
Who issues the permits for this work in Granada Hills?
Los Angeles Department of Building and Safety (LADBS). LADBS issues residential building, grading and pool permits here, with plan check and inspection handled through the Van Nuys Development Services Center. The terrain rises from south to north toward the Santa Susana Mountains, and parcels on the City's Designated Hillside Areas map fall under the Baseline Hillside Ordinance (No. 184,802), which limits grading quantity, floor area and height.
North of Rinaldi Street, the northwest portion is also in the Granada Hills 'K' Equinekeeping Supplemental Use District, and foothill properties near the mountains sit in or beside Very High Fire Hazard Severity Zone mapping with brush clearance and Chapter 7A obligations.
The Balboa Highlands tract, the 1962-64 Joseph Eichler subdivision designated in 2010, is a Historic Preservation Overlay Zone, so exterior alterations there require HPOZ design review through Los Angeles City Planning. Oaks and other protected species are common on the north side and need an Urban Forestry permit before removal or encroachment, and review length varies.
We prepare the drawings, make the submittal and handle plan-check corrections ourselves, so you are not the one chasing plan check.
What makes building in Granada Hills different?
Flat postwar tract lots dominate the southern half, while the northern foothills hold larger, sloping parcels with view orientation and descending rear yards that need retaining before they are usable. One local condition that shapes the work: The ground transitions from flat alluvial tract land in the south to sloping foothill terrain with shallow bedrock in the north, and an identical pool design prices very differently across that line.
Which parts of Granada Hills do you work in?
All of it, including Balboa Highlands, Knollwood, Granada Hills North and Granada Hills South. Our crews run every job out of our Cahuenga Pass base in Los Angeles, with our own people on site.
What does an ADU or addition cost in Granada Hills?
Detached ADU: generally $150,000 to $400,000+ across Southern California. What moves it is square footage, finish level, utility runs, and site access; garage conversions typically run well below a ground-up detached build. We give line-item pricing after seeing the site rather than quoting a number over the phone.
How long does an ADU take start to finish?
Plan a realistic year. Design and engineering typically take one to three months, city plan check and corrections add several more, and construction usually runs four to eight months depending on size and site access.
Is a garage conversion cheaper than a detached ADU?
Usually yes, and often substantially, because the foundation, walls and roof already exist. The trade-offs are that you lose the garage, and older slabs and framing sometimes need upgrading to meet current code.
Can I rent the ADU out?
California ADU law is designed to allow long-term rental, and an ADU is one of the few ways to add rentable square footage to a single-family lot. Short-term rental rules vary by city, so confirm your local ordinance before counting on that income.
Do you handle the permits?
Yes. Plans, engineering, Title 24 and the city submittal are all handled in-house, including responding to plan-check corrections. That is a service we sell on its own, so it is not something we hand off.
More Services in Granada Hills
Pool & Spa Remodeling in Granada Hills Backyard & Outdoor Living in Granada Hills Kitchen, Bath & Interior Remodeling in Granada Hills Plans, Permits & Design in Granada Hills Everything we build in Granada Hills
ADUs & Additions Nearby
ADUs & Additions in Porter Ranch ADUs & Additions in Northridge ADUs & Additions in Chatsworth ADUs & Additions in Santa Clarita
Planning Guides
Before You Build in Granada Hills
Costs, materials and process notes from our own projects.
Granada Hills ADU Costs: Garage vs Detached A detached ADU in Granada Hills runs $180,000 to $400,000. A garage conversion runs $95,000 to $180,000. Lot depth is generous here, but 1950s electrical service and septic pockets change the math. Read guide ADU Cost Breakdown by Size in Los Angeles A detached ADU in Los Angeles runs $150,000 to $400,000-plus. Here is the real cost broken down by unit size, with the soft costs, utility work and finish decisions that move the number. Read guide Garage Conversion to ADU: The Step-by-Step Build A garage conversion runs $80,000 to $180,000 in Southern California. Here is the real sequence, from slab testing and plan check to the raised floor, the mini-split and final sign-off. Read guide ADU Rental Income Math in the San Fernando Valley A one-bedroom ADU in the San Fernando Valley rents for roughly $2,100 to $2,900 a month. Here is the honest arithmetic on payback, carrying costs and what the unit adds to the property. Read guide
Planning an ADU in Granada Hills?
Sit down with your project manager and get an accurate estimate. We call you back within one business day.
Book a Consultation 818-300-2393
Licensed, bonded & insured · CSLB license #1119054
End of text part 1 of 1. This page is complete.