A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Room Addition Contractor Across North Hollywood
Adding a room to your North Hollywood home typically costs between $180 and $420 per square foot, so a 400-square-foot addition lands in the $72,000 to $168,000 range depending on finish level, foundation work, and whether your lot triggers an LADBS variance. We scope the price in writing before any work starts, and our crews live and build throughout North Hollywood, from Magnolia Park to the NoHo Arts District. You can reach a live person at (903) 568-7222 any hour to walk through your lot, your plans, and a real number.
North Hollywood’s flat, grid-tied blocks look simple on paper. They aren’t always. Fifty-by-120-foot lots with rear garages, fill-heavy soil west of Lankershim Boulevard, and LADBS setback rules turn a straightforward bump-out into a variance project if nobody checks the site first. That’s the value of a contractor who works these streets every week. We know what the city will flag before you’ve spent a dollar on plans.
If you’re researching a Room Addition Contractor for a growing family, an aging parent, or a work-from-home setup, this page will tell you what North Hollywood specifically throws at these projects and how to price them honestly.
Key Takeaways:
- Room additions in North Hollywood run roughly $180 – $420 per square foot; a 400-square-foot addition typically lands between $72,000 and $168,000.
- North Hollywood’s 50-by-120-foot lots and setback rules mean some additions need an LADBS variance, which changes both timeline and cost.
- Benson ADU Builders puts a written price in front of you before work begins, backed by a 365-Day Done Right Promise.
- We frame, finish, and pull permits for room additions and sunrooms throughout North Hollywood, Studio City, Van Nuys, Burbank, and Glendale.
Why Benson ADU Builders Is North Hollywood’s Preferred Room Addition Contractor Company
Our North Hollywood customers tend to ask the same three questions before signing: what will the city require, what will the price actually be, and who will show up on the job site. We answer all three before the first permit is pulled. Troy Eastman leads the Benson ADU Builders team with a simple rule: no verbal estimates that drift, no crew you haven’t met, and no change order you didn’t approve in writing.
Every technician who walks onto a North Hollywood property is background-checked and arrives in uniform. You’ll recognize us. Our crews work the neighborhoods around Burbank Boulevard, Tujunga Avenue, and the blocks east of the 170 freeway regularly, so we know the housing stock: 1940s and 1950s ranch homes with shallow crawl spaces, detached rear garages, and stucco that doesn’t love being tied into.
We also show up with a written guarantee on every project. The 365-Day Done Right Promise means if anything isn’t right within a full year of completion, we come back and make it right. No arguing. No invoice. It’s stamped on the contract, not mentioned in passing. That matters on a five-figure addition where a bad tie-in or a shifting slab shows up six months later.
Our North Hollywood work is coordinated from the brand’s Los Angeles office, so scheduling and dispatch stay local to the Valley. You call. A human picks up. We put a time on the calendar and keep it.
Sunroom Builders in North Hollywood
Sunroom Builders working in North Hollywood deal with a very specific set of constraints: framed rooms with big glass, minimal foundation work, and the city’s Title 24 energy rules. A sunroom addition on a North Hollywood ranch typically runs $150 to $300 per square foot when built on an existing patio slab, but that price climbs if you need a new engineered slab, upgraded glazing to pass cool-roof and window specs, or a shear-wall upgrade at the connection point to the main house.
A homeowner on a street like Hartsook or Califa might want a sunroom for morning light and a second living space without the full cost of a traditional addition. The trade-off: from March through October, a west-facing sunroom in North Hollywood turns into a heat box unless the glazing and ventilation are specified correctly. That’s a Title 24 conversation most contractors skip. We don’t.
Foundation and Slab Work
Many North Hollywood sunrooms go up on an existing concrete patio, which keeps the price down and the permit simpler. If your patio slab is 3 inches thick with no rebar and hairline cracks from the 1994 earthquake, LADBS may require a new footing. We verify the slab before quoting so the price doesn’t move once the inspector shows up.
Glass, Ventilation, and Title 24
North Hollywood summers demand high-performance glazing. We size windows and roof vents to the room’s orientation, and we handle the cool-roof and window specs LADBS enforces during plan check. You get a sunroom you can actually use in July, not one that doubles as a sauna.
Room Additions in North Hollywood
Room Additions in North Hollywood come in two flavors: attached additions that extend the existing footprint, and detached additions that often become ADUs. An attached bedroom and bath addition on a standard 50-by-120-foot lot runs between $200 and $350 per square foot, with the mid-$200s most common for a well-finished build. Detached additions trend slightly higher because they need their own service panel run, sewer tie-in, and sometimes a variance for the existing rear garage.
North Hollywood’s housing stock matters here. The postwar tract homes in Magnolia Park and the NoHo Arts District often sit on lots with a detached garage already at the rear, which eats into the buildable footprint. Then LADCO’s ADU rules and the city’s Hillside/Corner standards come into play: rear additions frequently must maintain a 4-foot side yard while still hitting the state’s 16-foot height limit for ADUs. The math can be tight. We scope it before you spend money on plans.
Attached Additions and Tie-Ins
Tying into a 1947 stucco ranch house means matching floor elevation, roof pitch, and the existing stem wall. We recently framed a 400-square-foot ground-up room addition off the rear of a house on Hartsook Street in North Hollywood: new slab tied into the existing stem wall, a 100-amp subpanel run from the main 200-amp service, and James Hardie lap siding to blend with the original stucco. The project cleared LADBS plan check with a rear-yard ADU variance and passed final after upgrading the shear wall at the connection point.
Detached Additions and ADUs
If you’re adding a detached room with a kitchenette, you’re building an ADU in the eyes of the city. That brings ADU-specific setbacks, height limits, and utility requirements into the mix. We build with prefab brands like Cover, Dvele, and Mighty Buildings when the site fits, and we know what access constraints on North Hollywood lots make a panelized build the wrong call versus site-built framing.
Trusted Brands We Service in North Hollywood
We build with names you can research yourself: Cover, Dvele, and Mighty Buildings for panelized and prefabricated additions, plus James Hardie cladding and siding materials on nearly every project. North Hollywood customers get access to real product lines with published specs, not a single take-it-or-leave-it package. When a prefab panel set requires a crane or forklift, we check the rear-yard access width before the order goes in, because North Hollywood alleys and narrow driveways can turn a routine set into a costly manual install. If the site can’t accommodate a panel drop, we tell you upfront and price the site-built alternative instead.
We also stock local parts and materials for North Hollywood projects, from Simpson Strong-Tie hardware for shear-wall upgrades to the specific pipe and flashing this housing stock needs. Faster turnaround, fewer trips back across the Valley.
Common Room Addition Contractor Problems We See in North Hollywood Homes
- Garage conversions assumed “by right.” A detached garage in North Hollywood that sits within the required rear or side setback triggers an LADBS variance or relocation requirement. We’ve seen homeowners budget $60,000 for a garage conversion and find out the garage has to move 4 feet, which changes everything.
- Skipping the soils report west of Lankershim Boulevard. The flat lots in that area often have fill-heavy soil from decades of grading. Without a pre-construction soils report, the inspector rejects the original footing plan mid-build and the foundation gets redesigned on the fly. Cheap to check, expensive to skip.
- Ordering prefab panels without confirming access. Brands like Abodu and Mighty Buildings build beautiful panels, but a North Hollywood lot with a narrow rear yard and no crane access means a forced manual set and a change order. We verify the access path before the panels are ever fabricated.
- Underestimating Title 24 on sunrooms. A west-facing glass room that doesn’t meet cool-roof and window specs gets flagged during rough inspection, and then you’re swapping glazing on a finished wall. We spec the glass correctly the first time.
Pricing for Room Addition Contractor in North Hollywood, CA
Here are honest ranges for the North Hollywood market, based on what these projects actually cost here:
- Sunroom addition on existing patio slab: $150 – $300 per square foot
- Attached bedroom and bath addition: $200 – $350 per square foot
- Detached ADU with kitchenette: $250 – $420 per square foot
- Garage conversion (no variance required): $120 – $200 per square foot
- Garage conversion (variance or relocation required): add $15,000 – $40,000 to the base project
What moves the price: lot geometry and setback triggers, foundation upgrade from fill-heavy soil, panelized vs site-built framing, finish level, and whether you’re running new electrical from a 100-amp panel that should have been upgraded thirty years ago. Every Benson ADU Builders quote includes a written, line-item price before work starts. Call (903) 568-7222 for a free estimate, and we’ll scope your specific North Hollywood lot before quoting so the number doesn’t shift when the inspector arrives.
We Also Serve Cities Near North Hollywood
While this page is built for Room Addition Contractor in North Hollywood homeowners, our crews cross the 170 and the 101 every day. We serve Studio City, Van Nuys, Burbank, and Glendale with the same written pricing and 365-Day Done Right Promise. If your house sits right on the edge of North Hollywood in Valley Village or Toluca Lake, you’re still in our normal scheduling zone. Same team, same process, same guaranteed price.
Serving North Hollywood, CA - Our Local Coverage Area
We’re based in the North Hollywood 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 Room Addition Contractor in North Hollywood
Yes. Once a room addition includes a kitchenette or cooking facilities, the city classifies it as an ADU, and that means ADU-specific setbacks, height limits, and utility requirements apply. In North Hollywood, that often triggers the 4-foot side yard rule and the 16-foot height limit, even on a standard 50-by-120-foot lot. Call (903) 568-7222 and we’ll tell you how your specific lot reads before you pay for plans.
Plan for 4 to 8 months from permit submittal to final inspection for a typical 300- to 500-square-foot addition in North Hollywood. LADBS plan check runs anywhere from 3 to 10 weeks depending on the current queue and whether your project triggers variance review. Construction itself usually lands between 10 and 16 weeks. We give you a calendar in writing at the start and update it weekly in real time.
Sometimes. If you already have an existing concrete patio slab that’s thick enough, reinforced, and in good condition, a sunroom can often go up without a new foundation. If the slab is thin or cracked, LADBS will require new footings. We verify the slab condition during the free estimate so you know the answer for your house, not the hypothetical.
Brands like Cover, Dvele, and Mighty Buildings need a clear access path for a crane or forklift, a prepared foundation, and a site that meets their panel-set tolerances. North Hollywood alleys and narrow rear yards sometimes kill the crane option. We confirm access width and site prep requirements before you commit to a brand, so you’re not paying a change order for a manual set.
Three things drive mid-project price changes on North Hollywood jobs: an LADBS-required variance or garage relocation you didn’t know about, a soils report that forces a foundation redesign, and Title 24 glazing or shear-wall upgrades flagged during inspection. Our written price includes a full site review before we quote, so these surprises surface before work starts, not after. Call (903) 568-7222 for a free estimate that accounts for your actual lot.
If you’re ready to scope a room addition or sunroom on your North Hollywood property, call us at (903) 568-7222. We’ll walk the lot with you, put real numbers on paper, and never ask you to sign for a price that isn’t written down.
Written by Troy Eastman, Owner at Benson ADU Builders, serving North Hollywood and the surrounding Valley.
