We had a tiny living room that opened onto a covered patio we never really used. Right Image Builders designed and built a full family room addition in its place — 400 square feet, vaulted ceiling, skylights, and bifold doors to the garden. It completely changed how we live in this house. You can't tell it's an addition — it looks like it was always there.

Home & Room Addition Contractor in Granada Hills, CA
More room without moving — rear additions, primary suites and second stories on Granada Hills lots, engineered and permitted through LADBS, matched to your existing home. CSLB #1021284.
Professional, licensed & insuredFixed-price proposalsPermits pulled & closedOur own crew, not subs
Tell us about the project. We call back to schedule the on-site estimate in Granada Hills.
Room Addition Contractor in Granada Hills, CA: Right Image Builders (CSLB #1021284) builds room additions for 1950s–60s ranch homes, 1,500–2,200 sq ft on 7,000–10,000 sq ft lots, with parcels up to 20,000 sq ft in Old Granada Hills and hillside estate lots in Knollwood across Old Granada Hills along Chatsworth Street, the Knollwood hills north of Rinaldi and the tract streets around Balboa Boulevard, with its own crew and permits through LADBS, City of Los Angeles, with Baseline Hillside Ordinance review north of Rinaldi Street. Plan on 2–4 months of design, engineering and plan check, then 3–6 months of construction. One fixed written price after a free on-site estimate.
Licensed general contractor, CSLB #1021284, licensed since 2016, 5.0★ Google (45 reviews), 4.9★ Angi (103 reviews). Office in Valley Glen, about 25 minutes from Granada Hills. Planning ranges by tier and neighborhood are in the room addition cost guide.
Right Image Builders is a licensed home addition contractor serving Granada Hills — Old Granada Hills along Chatsworth Street, the Knollwood hills north of Rinaldi, the tract streets around Balboa Boulevard and the blocks near Granada Hills Charter High School — the room addition contractor to call when a a 1,500–2,200 sq ft 1950s–60s ranch on a 7,000–10,000 sq ft lot needs one more bedroom, a primary suite or a second story. We build rear room additions, suites and second-story expansions, engineered and permitted through LADBS (City of Los Angeles) at the Van Nuys Development Services Center, under one fixed-price contract; our crew is based in Valley Glen about 25 minutes away. Call (818) 210-4544.
More Room,
Without Leaving Granada Hills
The typical Granada Hills house is a 1,500–2,200 sq ft 1950s–60s ranch on a 7,000–10,000 sq ft lot, and the extra lot width is what makes a ground-floor addition the usual answer: a primary suite or family room off the back or the side on its own foundation, with the roof line and stucco matched. In Old Granada Hills the parcels reach 20,000 sq ft and a full wing or a courtyard plan is possible; in Knollwood the slope sets the footprint.
An addition on a 1,500–2,200 sq ft 1950s–60s ranch on a 7,000–10,000 sq ft lot is engineered from the foundation up: footings and a floor to match the house, framing and a roof tied into the existing roof line, plumbing to the lateral for a new bath, electrical on new circuits, HVAC extended or a dedicated mini-split, and stucco, trim and windows matched so the addition reads as original. The electrical service here is typically 100-amp panels in most 1950s–60s houses; a 200-amp LADWP upgrade is part of most full kitchens, which is why a 200-amp upgrade is often part of the project.
We are based in Valley Glen, about 25 minutes away, and the project lead who does your consultation runs the build and is on site at every milestone. The first thing we do is pull your parcel on ZIMAS so you know the buildable square footage before you spend anything on drawings.

Ways to Add
Space in Granada Hills
Rear & Ground-Floor Room Additions
A new bedroom, family room or office off the back of a Granada Hills ranch house, on its own foundation and roof, framed into the existing structure and permitted through LADBS — the straightforward project on the neighborhood's level 1950s lots.
Primary Suite Additions
Add the primary bedroom, walk-in closet, and en-suite bath these older tract homes were never built with — a high-return addition that transforms how the house lives without touching the yard footprint any more than needed.
Second-Story Additions
When the lot is tight or you want to keep the yard, we build up. Second-story additions require careful structural engineering to carry the new load on the existing foundation — exactly the work a licensed contractor engineers and permits. If the lot is short, building up keeps the yard — our second-story addition guide covers the structural evaluation and roof work involved.
Bump-Outs & Kitchen Expansions
A Granada Hills bump-out adds a few hundred square feet to a kitchen, dining room or primary bath, with its own foundation, a matched roof line and exterior, permitted like any other addition.
Engineering & Permits
Every addition is designed, structurally engineered, and permitted through LADBS. We coordinate the architectural and structural plans, manage plan check, and carry the project to signed-off final inspection.
Seamless Integration
Matched rooflines, stucco texture, window styles, and floor heights so the addition reads as part of the original home. The difference between an addition that adds value and one that looks tacked on.
Transparent from the first visit to the closed permit.
Professional, licensed and insured, and we put that in writing at every step, because a remodel is a trust decision before it is a construction decision.
California general contractor license CSLB #1021284 (General Building B), active since 2016, with general liability and workers' compensation insurance. Check the license yourself at cslb.ca.gov before you sign anything, with us or anyone else.
The proposal lists what is demolished, what is built, which finishes are included and which permit covers it. If it is not written down, it is not in the job.
When walls, floors or roofs open up we photograph what is behind them and send you the pictures. Anything beyond the scope is priced in writing before the crew continues. You never find out from the invoice.
California law caps a home-improvement deposit at $1,000 or 10 percent of the contract, whichever is less. We follow it. Progress payments follow the work, and the final payment comes after your walkthrough.
We submit the plans, meet the inspector and close the permit. You get the closed-permit record, which is what a buyer, an insurer or an appraiser will ask for.
The people who estimate the job are the people who build it. No subcontractor hand-offs, no call center; your project lead answers the phone during the job and after it.
What Your Granada Hills
Lot Will Allow
Granada Hills climbs from the flat tracts around Balboa Boulevard and Chatsworth Street up into Knollwood and the foothills north of Rinaldi, with Old Granada Hills and its walkable Chatsworth Street village on the west, Granada Hills Charter High School in the middle and O'Melveny Park, the city's second-largest park, at the top. Our office is in Valley Glen, about 14 miles south by the 405, a 25-minute drive, and the LADBS counter that reviews Granada Hills permits is the Van Nuys Development Services Center on Van Nuys Boulevard.
Old Granada Hills has its own Residential Floor Area district, which caps how much house the lot can carry, and parcels north of Rinaldi fall under the Granada Hills Specific Plan and the Baseline Hillside Ordinance, so the first thing we do is pull the parcel on ZIMAS and tell you the buildable square footage before any drawing. Plan check runs through LADBS at the Van Nuys counter, with the structural engineering, Title 24 and, on the hillside, the grading review in one set of plans.
The addition is designed, structurally engineered and permitted through LADBS (City of Los Angeles) at the Van Nuys Development Services Center, with inspections at foundation, framing, rough systems, insulation and final, and hillside review where the parcel requires it; the permit is closed at the end so the new square footage is on record when you refinance or sell.
How We Price a Room addition
in Granada Hills
Every room addition in Granada Hills gets one fixed, written price after a free on-site visit: we measure the house, check what LADBS requires for the lot and price the whole scope before you sign anything.
What moves the number is the scope you choose, the condition we find behind the walls and the finish level, never a surprise invoice: anything we uncover during the work is priced in writing before the crew continues, and the final payment comes after your walkthrough.
Setting a budget first? The room addition cost guide shows the current planning ranges by tier and neighborhood.
How Long a Granada Hills
Home Addition Takes
A Granada Hills home addition typically needs a few months of design, structural engineering and LADBS plan check, then about three to five months of construction for a ground-floor addition and longer for a second story. On level lots the schedule is the most predictable part of the project; hillside parcels add grading and access review to plan check.
The sequence is plans and structural calculations, plan check at the LADBS Granada Hills office, then foundation, framing and roof tie-in, rough electrical, plumbing and HVAC with inspections at each stage, insulation, drywall, exterior match to the original stucco and finishes, and final inspection. Second stories add the structural evaluation and any reinforcement before framing. Your fixed-price proposal shows the whole schedule with realistic dates.
Three Steps.
Zero Surprises.
Free Consultation & Zoning Review
We visit your Granada Hills home, pull the parcel's zoning, and tell you honestly what you can build — square footage, height, setbacks — and which addition fits your goals and budget.
Design, Engineering & Permits
We produce architectural and structural plans, submit through LADBS, and manage plan check — with a written fixed-price proposal set before construction begins.
Build & Deliver
One crew builds the addition to signed-off final inspection, matched to your existing home. Final payment is due only after your walkthrough approval.
Choosing a Home Addition
Contractor in Granada Hills
Verify the license at cslb.ca.gov (ours is 1021284) — active, classified for structural work, bond and workers' compensation on file — and get insurance certificates in writing. Ask who prepares the plans, who engineers the structure and who takes the permit through the LADBS Granada Hills office and answers plan-check corrections; a contractor who knows that counter keeps a Granada Hills project on schedule.
Require a written fixed-price contract with an itemized scope, named allowances, written change orders and progress payments tied to completed work; California caps the down payment at $1,000 or 10 percent, whichever is less. Ask how the addition's foundation, roof and stucco will be tied into a 1950s house so it reads as original, and who manages the schedule day to day.
Add On to Your
Granada Hills Home
Tell us what you want to add and we'll get back to you within 4 business hours. We'll confirm what your lot allows before you spend anything on design.
Prefer to talk it through?
What Clients Say About
Our Room Addition Work
Our full home remodel was a massive undertaking. Right Image Builders handled it all — demo, framing, plumbing, electrical, tile, painting. One contract, one crew, one point of contact. I cannot overstate how rare that is in LA.
They walked me through every permit requirement and handled it all themselves. The project finished on budget and exactly to spec. My BuildZoom contract check confirmed everything — these guys are top 1% for a reason.
Read before you hire anyone.
Plain answers on costs, permits, materials and hiring, written for Los Angeles houses and kept current.
Room Addition or ADU: Which Should You Build in Los Angeles?
Room addition vs. ADU in Los Angeles (2026): Costs, permits, timelines.
Read the guide →Decision guideBuild Up or Build Out? Second-Story vs. Ground-Floor Additions in Los Angeles
Build up or build out in Los Angeles (2026)? Structure, yard, zoning limits, timelines.
Read the guide →GuideDo You Need a Permit for a Room Addition in Los Angeles?
Learn what typically goes into permitting a Los Angeles room addition, including plans, structural information,…
Read the guide →AnswersAdditions and whole-home questions
Direct answers from the Los Angeles remodeling FAQ, kept current.
Read the answers →Questions We
Hear in Granada Hills
Yes. Right Image Builders is a licensed California general contractor, CSLB #1021284, with general liability and workers' compensation insurance; verify the license in minutes at cslb.ca.gov under "Check a License" and ask us for the insurance certificates. The Granada Hills estimate is free and on site, done by the project lead who will run the job, and the itemized fixed-price proposal follows within 3–5 business days.
Right Image Builders, a licensed general contractor (CSLB #1021284) based in Valley Glen about 25 minutes from Granada Hills, builds room and home additions across Old Granada Hills along Chatsworth Street, the Knollwood hills north of Rinaldi, the tract streets around Balboa Boulevard under one fixed-price contract: design, permits through LADBS, and construction by one crew, with final payment only after your walkthrough. 5.0★ on Google (45 reviews) and 4.9★ on Angi (103 reviews).
A fixed price, in writing, after the free on-site visit, not a running estimate. The scope is itemized line by line, the LADBS permit and inspections are inside it, and hidden conditions found during a Granada Hills job are priced in writing before any further work. For budget planning before the visit, the room addition cost guide shows the current ranges.
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Build On to Your
Granada Hills Home
Free consultation and zoning review. Written fixed-price proposal. One licensed team from design and LADBS permits through to a finished addition matched to your home.
(818) 210-4544