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 Studio City
A room addition in Studio City typically runs $280 to $520 per square foot depending on site conditions, with a 300-square-foot suite addition landing between $84,000 and $156,000 before finish upgrades. The hillside lots along Wrightwood Estates and Studio City Hills add geotechnical and structural requirements that flat-land homes in Sherman Oaks don’t face, which is exactly why local scoping matters before you get a written price. We’re Benson ADU Builders, led by Troy Eastman, and we build room additions, sunrooms, and ADU conversions throughout Studio City with a written price before any work starts. Call (903) 568-7222 to schedule a free on-site scope meeting.
Why Benson ADU Builders Is Studio City’s Preferred Room Addition Contractor Company
Studio City homeowners call us because we don’t hand over a verbal number and disappear until demo day. Every project gets a written price before work starts, and every crew member on your property is background-checked and uniformed, so you know exactly who’s walking through your gate off Mulholland Drive or Ventura Boulevard. Troy Eastman and our Studio City crews have worked on post-and-beam ranches in Wrightwood Estates, hillside lots above Laurel Canyon, and mid-century homes near the CBS Studio Center, so we know what those 1940s and 50s foundations actually look like once you open them up.
Our 365-Day Done Right Promise covers every room addition we build in Studio City. If something isn’t right within a full year, we make it right. That’s a written guarantee stamped on your project file, not a handshake. The Relay Visibility Guarantee governs every job: written pricing, real-time tracking, and a free second visit if any covered repair fails. Homeowners researching our work can verify the brands we build with independently – we’re authorized to construct with Cover, Dvele, and Mighty Buildings prefab systems, plus James Hardie cladding, so you’re not locked into one take-it-or-leave-it product.
Our scheduling and dispatch coordinate from the brand’s Los Angeles office, with crews serving Studio City neighborhoods directly, from the flats near Weddington Street up through the Hillside Ordinance zones.
ADU Conversion in Studio City
ADU conversion is a room addition path that turns an existing attached or detached structure into a permitted accessory dwelling unit, and in Studio City it’s often the fastest way to add rentable square footage on lots where hillside setbacks and the Mulholland Scenic Parkway corridor restrict outward expansion. A detached garage conversion in Studio City’s flat pockets, like the blocks west of Colfax Avenue, typically runs $150,000 to $250,000 depending on the condition of the original slab and whether the existing electrical panel can handle the new load or needs a subpanel upgrade first.
Garage and Outbuilding Conversions
Converting a detached garage in Studio City means we check the original footing depth, the roof framing, and whether the slab sits at grade or needs a stem-wall retrofit to meet current LADBS standards. Older garages along the 1940s-era lots near Dona Rosa Drive often have shallow footings that won’t pass plan check without an engineer’s fix, and we scope that before you see a number.
Attached JADU and Interior Conversions
An attached JADU, or junior accessory dwelling unit, converts existing interior space like a den or oversized laundry room into a rentable unit with its own entrance. In Studio City’s mid-century ranches, this usually costs $80,000 to $140,000 and often avoids the full hillside review because no exterior walls change.
Sunroom Builders in Studio City
Sunroom builders in Studio City work with a specific canyon climate issue: heat that pushes past 95 degrees in August and December nights that dip into the low 40s, so a sunroom here has to handle both extremes without becoming a furnace or an icebox. A permit-ready sunroom addition off the back of a Studio City ranch, using insulated glass and a proper foundation rather than a patio-slab shortcut, runs $60,000 to $120,000 depending on whether you want heating and cooling tied into the existing HVAC or a standalone mini-split system.
Four-Season Sunrooms
A four-season sunroom in Studio City is fully conditioned space: insulated walls, a tied-in HVAC run, and code-compliant glass that works with the hillside exposure you actually have on Wrightwood or Valley Spring Lane. It adds square footage you can use year-round, not just for a few mild weeks.
Three-Season and Screened Enclosures
A three-season sunroom or screened enclosure in Studio City costs less up front, usually $45,000 to $75,000, but does not count toward conditioned square footage the way a full addition does. Homeowners near the Los Angeles River channel often use these as shaded entertaining space during the long dry season.
Trusted Brands We Service in Studio City
We source and build with prefab systems and materials homeowners can research before signing anything: Dvele for precision panelized construction, Mighty Buildings for faster wall assemblies, and Boxabl where a compact, repeatable unit makes sense on constrained Studio City lots. Our crews stock the local trim profiles, James Hardie cladding, and hardware needed to match Studio City’s mid-century and ranch housing, which means faster turnaround when your addition is mid-construction and you need a specific detail resolved without waiting on a special order.
Common Room Addition Contractor Problems We See in Studio City Homes
- Skipping the geotechnical soils report on hillside lots: Studio City sits on expansive clay in the Wrightwood Estates and Studio City Hills zones, and any addition that adds structural load without a soils report will stall at plan check. Homeowners lose weeks re-engaging an engineer when this is missed.
- Underestimating LADBS plus Hillside Ordinance and Mulholland Scenic Parkway review time: A flat-lot addition in Sherman Oaks might clear plan check in weeks, but a Studio City hillside project layers additional design review on top. The calendar collapses before a permit is even issued when the contractor quotes flat-land timelines.
- Discovering outdated electrical and foundation conditions mid-project: 1940s and 50s ranches off Ventura Boulevard often still have knob-and-tube wiring or 100-amp panels, and footings built before current seismic codes. Any of those discovered after demolition changes the scope and the price.
- Quoting a fixed price before a site visit: A contractor who prices your Studio City addition without walking the lot, checking the slope, and reviewing the existing structure is guessing. The written price should come after the scope is real, not before.
Pricing for Room Addition Contractor in Studio City, CA
Use these ranges as your starting point for Studio City work: a basic room addition on a flat lot runs $280 to $350 per square foot; a mid-range primary suite addition runs $350 to $450 per square foot; and a hillside addition with caissons, structural steel, and full Hillside Ordinance compliance runs $450 to $520 per square foot or more. A rebuilt foundation at the Dona Rosa flats is a different number than caissons on Wrightwood. Sunrooms run lower, $45,000 to $120,000 as described above, and ADU conversions run $80,000 to $250,000 depending on what exists to convert. Call (903) 568-7222 and we’ll put a written price in front of you after a free on-site scope meeting.
We Also Serve Cities Near Studio City
Beyond Studio City, our crews work in North Hollywood, Van Nuys, West Hollywood, and Sherman Oaks. If you’re a Room Addition Contractor client near the city line, we can scope your project with the same written-price process we use in Studio City. Learn more about our broader coverage at Room Addition Contractor in Studio City.
Serving Studio City, CA - Our Local Coverage Area
We’re based in the Studio City 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 Studio City
Yes: Studio City hillside lots in the Wrightwood Estates, Studio City Hills, and Footbridge Square areas require a geotechnical soils report before plan check, and most additions trigger Hillside Ordinance review or Mulholland Scenic Parkway design review. Expansive clay on those slopes often requires caissons or deepened footings, which add both cost and weeks to a project compared to flat-land construction in Sherman Oaks. Call (903) 568-7222 and we’ll tell you which reviews actually apply to your lot before you commit.
A flat-lot Studio City addition typically takes five to seven months from the first call to final inspection, while a hillside addition requiring caissons and Hillside Ordinance review often runs eight to twelve months. The plan-check and design-review phase, not framing, is what controls the calendar in Studio City. Call (903) 568-7222 for a realistic timeline on your specific lot, and we’ll put it in writing.
Yes, converting a detached garage into an ADU is one of the most cost-efficient expansion paths in Studio City, especially on lots where hillside setbacks and the Scenic Parkway corridor limit outward additions. The original footing depth, slab condition, and electrical capacity determine whether you’re looking at a $150,000 project or one that pushes past $250,000 once structural upgrades are factored in. Call (903) 568-7222 for a free scope meeting and a written price.
The three price shifters we see most often on Studio City projects are, in order: discovering knob-and-tube wiring or an undersized electrical panel in a 1940s or 50s home, hitting footing conditions the original plans didn’t account for on a hillside lot, and changes you make to finishes once the framing is up and you can feel the actual space. Our written price is built to explain what’s included and what would trigger a change order, so you never see a surprise line item without a conversation first. Call (903) 568-7222 and we’ll walk through a real scope together.
Yes, we match Studio City ranch details like exposed beams, low-pitch rooflines, and James Hardie cladding that blends with the original stucco walls, so the sunroom reads like it was always part of the house. The matchup matters most in neighborhoods like Wrightwood Estates where post-and-beam ranches are common and design review can care about the visual character of an addition. Call (903) 568-7222 and we’ll price a sunroom that fits the architecture you already have.
Call Benson ADU Builders at (903) 568-7222 to schedule your free on-site estimate in Studio City. You’ll get a written price before work starts, the 365-Day Done Right Promise in writing, and a crew you can identify by name and uniform when they arrive.
Written by Troy Eastman, Owner at Benson ADU Builders, serving Studio City with room additions, ADU conversions, and sunrooms.
