A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Home Addition Contractor Across Hollywood
Most Hollywood homeowners call us after a frustrating month of unanswered bids. They want a straight answer on what an addition costs, what permits it triggers, and when crews can actually start. We get it. A home addition in Hollywood runs $180 – $450 per square foot depending on site conditions, and hillside lots near Beachwood Canyon or the Hollywood Dell add real engineering cost. That is not a vague answer. It is the range we write into every estimate before you sign anything. Call (903) 568-7222 and you will talk to a person who knows Hollywood’s permit desk, not a call center.
Why Benson ADU Builders Is Hollywood’s Preferred Home Addition Contractor Company
We have built additions on flat lots off Melrose, on hillside parcels below the Hollywood Sign, and on tight single-car-garage infill lots in East Hollywood. That range of experience matters because a 400 sq ft bedroom bump-out in Los Feliz behaves completely differently from the same footprint on a steep slope off Mulholland Drive. Our Home Addition Contractor team has handled both, and everything between.
Every Hollywood project gets a written price before work starts. That is not a sales tactic. It is how we operate, and why our customers on Franklin Avenue, Beachwood Drive, and Cahuenga Boulevard keep referring us to neighbors. Troy Eastman, who leads our crews, reviews every Hollywood quote personally before it goes out. Background-checked, uniformed technicians show up when they say they will, and a live person answers the phone around the clock.
We build with prefab panel systems from Abodu and Cover, plus James Hardie cladding, because Hollywood’s hillside lots often make panelized framing faster and cleaner than fully site-built framing. You can research those brands yourself before you ever pick up the phone.
Bedroom Addition Contractor in Hollywood
A Bedroom Addition Contractor in Hollywood works with a specific set of constraints: 1920s bungalow lot lines, zero side setbacks on older parcels, and hillside grading rules that flatland LA never sees. The job typically starts with a site survey, then a foundation plan, then framing, electrical, drywall, and finish work over 10 – 16 weeks.
A ground-floor bedroom addition in Hollywood runs $220 – $380 per square foot when the lot is reasonably flat and accessible. On a hillside lot that needs retaining walls or caissons, plan for $350 – $500 per square foot. We always write the full number out before demolition starts, and our 365-Day Done Right Promise covers the work for a full year after we hand you the keys.
Permit Reality for Hollywood Bedroom Additions
Hollywood falls under Los Angeles city permitting, and bedroom additions here routinely trigger hillside grading review if your parcel has more than a 10% slope. LAFD brush clearance verification also applies to any lot in a fire zone. We handle both as part of the scope, so you do not spend three months chasing paperwork.
Foundation Work on Older Hollywood Lots
Most Hollywood bungalows built before 1940 sit on shallow concrete or raised foundations that will not support a new load-bearing wall. We specify deep piers or caissons where soil reports call for them, and we show you the soil report before we pour anything. That is the difference between a quote that holds and one that balloons after demo day.
Sunroom Addition in Hollywood
A Sunroom Addition in Hollywood gives you usable square footage without the full structural cost of a bedroom addition, and on the right lot it is one of the fastest ways to add light and space to a 1920s or 1930s bungalow. These rooms typically run $180 – $300 per square foot depending on glazing, foundation type, and whether you want heating and cooling.
Hollywood’s climate lets a well-designed sunroom work year round. Our builds include Low-E glazing and proper cross-ventilation, because canyon-adjacent homes from the Hollywood Dell to Whitley Heights can swing 30 degrees between morning and afternoon. You will get a written line-item price before we order a single window.
Glazing Choices That Matter Here
We spec insulated Low-E glass as standard on Hollywood sunrooms. The afternoon sun off the Hollywood Hills is intense, and cheap single-pane glass turns the room into an oven by 3 p.m. You will see the glazing line item broken out in your quote, so you know exactly what you are paying for.
Foundation Options for Sunrooms
On flat-grade lots, a sunroom can sit on a simple slab or pier foundation and go up in 6 – 9 weeks. On sloped Hollywood parcels, we recommend the same engineered piers we use for full additions. The extra cost is real, but skipping it on a hillside court is how sunrooms start separating from the main house within a few seasons.
Trusted Brands We Service in Hollywood
We are authorized to build with Abodu, Dvele, and Mighty Buildings, and we stock James Hardie siding and trim locally for Hollywood installations. That means shorter lead times when you are matching a 1920s stucco exterior or wrapping a hillside addition in low-maintenance cladding. If you want a Dvele panelized suite or an Abodu studio shell integrated with a site-built addition, we can spec both in one drawing set and one permit package. You get a single contractor, a single warranty, and a single written price covering the whole scope.
Common Home Addition Contractor Problems We See in Hollywood Homes
- LAFD brush clearance and hillside grading timelines get underestimated. Hollywood homeowners often think a bedroom addition permit takes six weeks. On a hillside lot, LAFD brush reviews and grading plans can add 4 – 8 weeks before we can legally break ground. We flag this in week one, not month three.
- Unstable hillside soils under older foundations. Plenty of 1920s Hollywood bungalows sit on fill dirt that was never compacted to modern standards. When we demo and find that, the fix is deep piers or caissons, not a patch job. We write that contingency into the initial quote instead of springing it later as a change order.
- Archaeological and paleontological monitoring requirements during excavation. Certain Hollywood hillside zones require a certified monitor on site during trenching and excavation. That is a real line item, it can stall work if ignored, and it is in our quotes as a named cost whenever the parcel triggers it.
- Wind-driven dust and canyon moisture against new envelopes. Homes off Beachwood Canyon and the Cahuenga Pass take real wind. We seal framed additions tighter than flatland code minimum and use James Hardie cladding to keep canyon dust and damp out. A loose envelope here fails fast.
Pricing for Home Addition Contractor in Hollywood, CA
Here is the honest range for Hollywood’s market. A bedroom or room addition on a flat, accessible lot runs $220 – $380/sq ft. A hillside bedroom addition with retaining walls, caissons, and wildfire clearances runs $350 – $500/sq ft. A sunroom addition runs $180 – $300/sq ft. Permit fees, engineering, and plan check add roughly $8,000 – $18,000 on top of construction cost depending on scope and slope. The biggest variables are soil condition, hillside grading, LAFD brush requirements, and foundation depth. Call (903) 568-7222 for a free written estimate. You will know the full number before you commit.
We Also Serve Cities Near Hollywood
Our crews work throughout the wider LA basin, serving Home Addition Contractor in Hollywood plus projects in Los Angeles, Long Beach, Anaheim, and Riverside. If you are over the county line but still want a written price before work starts, call us. The guarantee does not change.
Serving Hollywood, CA - Our Local Coverage Area
We’re based in the 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 Home Addition Contractor in Hollywood
A home addition in Hollywood requires LA city building permits, and depending on your lot you may also need hillside grading approval, LAFD brush clearance verification, and possibly archaeological monitoring if your parcel triggers the city’s fossil and artifact review zones. Plan on plan check taking 6 – 12 weeks before construction starts, and call (903) 568-7222 if you want us to pull all of it for you.
A standard bedroom addition on a flat Hollywood lot takes 10 – 16 weeks from groundbreaking to final inspection. Hillside projects with caissons, retaining walls, and LAFD clearances typically run 5 – 8 months before the addition is finished. We give you a written timeline with milestone dates in the estimate so you can track progress against it.
Yes, and on Hollywood hillside lots it is often more cost-effective to do both under one permit package and one grading plan rather than separate projects two years apart. We regularly combine a detached ADU with a bedroom or sunroom addition on the same parcel. Call (903) 568-7222 for a free estimate, and we will show you the combined number versus doing them separately.
Hillside soils, deep foundations, retaining walls, LAFD brush clearance, and archaeological monitoring are the biggest cost drivers on Hollywood additions that do not exist on flatland parcels in the Valley. A flat-lot bedroom addition may run $220/sq ft, while the same room on a steep Hollywood slope can run $500/sq ft once engineering is in.
Yes. We coordinate the soils engineer, grading plan, LAFD brush review, and structural drawings for hillside additions in Hollywood as part of our standard scope. If the report calls for caissons or retaining walls, that cost is in your written estimate before work starts, not added after excavation opens up.
Hollywood additions run slightly higher than flatland Los Angeles and Long Beach because so many parcels are hillside, and lower than some coastal Anaheim and Riverside hillside builds where engineering and access costs climb. The best way to get a real number is a free written estimate. Call (903) 568-7222.
Written by Troy Eastman, Owner at Benson ADU Builders. Our Hollywood crews coordinate from the brand’s Los Angeles office and serve the hills and flats of Hollywood locally.
