Fast, Reliable ADU Builders Across Los Angeles
We build accessory dwelling units in Los Angeles the way they should have been built the first time. A Los Angeles ADU is a second home on your own lot, and in this city, that lot might sit three miles from the Pacific or thirteen miles inland in the Valley. The two jobs are not the same spec, and most builders quote them like they are. We don’t. If you’re planning a detached ADU, garage conversion, JADU, or prefab installation, call (254) 602-5618 and we’ll walk the site, check the exposure, and write you a real number before anything gets framed.
Why Lodgewick ADU Builders Is Los Angeles’s Preferred ADU Builders Company
Lodgewick ADU Builders operates under The Kingswell Guarantee, and in Los Angeles that guarantee has to survive salt fog, seismic code, and a permitting department that rewards builders who know LADBS inside and out. We’re led by Russ Delmar, and every project gets a written price before work starts, a defined arrival window, and a written guarantee on the build itself. Not a verbal promise. Paper, on every job.
Our crews know the difference between a Highland Park alley garage from 1948 and a Tarzana hillside lot in a Very High Fire Hazard Severity Zone. That local knowledge changes what we specify: Type 316 stainless fasteners near the coast, hot-dip galvanized post bases, sealed paver joints, and James Hardie siding detailed for the clearance LADBS requires. Los Angeles homeowners who’ve been burned by a contractor that vanished after the check cleared end up calling us, and we return calls the same day. A live person answers, every time.
JADU in Los Angeles
A JADU in Los Angeles is a junior accessory dwelling unit, typically carved out of an existing home or attached garage, capped at 500 square feet, and often the fastest permitted living space you can add to an R1 lot. In Los Angeles, JADUs are increasingly pulled from the city’s huge stock of 1940s and 1950s detached garages, which means we’re opening walls that haven’t seen daylight in 70 years and finding conditions no plan set ever predicted. A garage-conversion JADU in Los Angeles typically runs $120,000 – $180,000 depending on the condition of the slab, the electrical panel, and whether the framing needs seismic retrofitting. Interior conversion of an attached space runs lower, usually $90,000 – $140,000.
Salt-Air Remediation Before Framing
On ocean-influenced lots, the first step is almost never framing. We inspect the existing bottom plates, lintels, and fastener lines for red rust bleeding through stucco. When we find pitted steel, we replace it with hot-dip galvanized or stainless before any new wall goes up. Skipping this step means your JADU’s structural hardware starts failing while the paint is still fresh.
Panel and Utility Triggers
A Los Angeles JADU frequently triggers an electrical panel upgrade, especially in pre-1970 homes that still run 60-amp service. We identify that in the estimate, not mid-job. LADBS fire sprinkler thresholds and dedicated egress requirements also shape the plan, and we handle both as standard scope.
ADU Plans in Los Angeles
ADU Plans in Los Angeles are the architectural and structural drawings that get your project through LADBS plan check, and in this city, plan quality is the single biggest permitting speed lever you control. A full plan set for a detached ADU in Los Angeles typically runs $6,000 – $12,000 depending on site complexity, with hillside lots, soils reports, or Very High Fire Hazard Severity Zone requirements pushing toward the top of that range. Los Angeles’s LADBS Standard Plan Program offers pre-approved designs that cut plan check from months to as little as 2 – 4 weeks, and we know which of those pre-approved plans actually fit LA’s typical 50-foot-wide lots and alley-facing garage footprints.
When Standard Plans Fit the Lot
The Standard Plan Program works best on flatland R1 parcels with conventional front-yard setbacks and no hillside conditions. We match the pre-approved design to your lot’s actual dimensions so you aren’t paying an architect to redraw what LADBS already accepted. That’s often the difference between a permit in three weeks and a permit in five months.
When a Custom Set Is Required
Hillside lots in the Hollywood Hills, Laurel Canyon, or Chatsworth frequently need engineered foundations, soils reports, and defensible-space setbacks that fall outside any pre-approved plan. In those cases, a custom ADU plan set is not optional; it’s code. We price the engineering and geotech honestly, and we tell you before you write a check whether your lot sits in a Very High Fire Hazard Severity Zone, because that changes exterior material requirements and plan check timelines.
Trusted Brands We Service in Los Angeles
We work directly with Cover, Dvele, and Boxabl prefab systems for Los Angeles homeowners who want a factory-built ADU set on a site-built foundation. The Los Angeles angle on prefab is corrosion resistance: a prefab module from Dvele or Cover arrives with its own exterior envelope, and on coastal lots we specify marine-grade hardware at every connection point to the foundation. Our Los Angeles office stocks stainless fasteners, hot-dip galvanized post bases, and polyurethane joint sealants local crews need for ocean-influenced installations. That means no waiting on a supplier in Phoenix when your prefab lands in a salt-fog zone two miles from the surf.
Common ADU Builders Problems We See in Los Angeles Homes
- Red rust bleeding through stucco at fastener lines. This is the signature of standard G90 electro-galvanized screws and post bases installed within a few miles of the coast. The cure is Type 316 stainless or hot-dip galvanized replacement, and we see it constantly in West LA, Mar Vista, and Culver City.
- Vinyl window frames discolored and cracking within 5 years. Los Angeles thermal cycling plus salt fog destroys untreated vinyl. On ocean-influenced lots we specify anodized aluminum or fiberglass frames, and we explain why the inland spec is the wrong spec before we write the quote.
- Paver joints eroding and washing out on patios and walkways. Unsealed concrete paver joints fail fast in marine air. We spec a polyurethane joint sealant rated for salt exposure, and that detail alone extends the hardscape’s life by years.
- Contractors quoting the same build from Santa Monica to the Valley. This is the one that costs Los Angeles homeowners the most. A standard inland spec on a coastal lot means callbacks, rust, and rework. A quote that doesn’t ask about ocean exposure is a quote built for someone else’s house.
Pricing for ADU Builders in Los Angeles, CA
A detached ADU in Los Angeles typically runs $250,000 – $400,000 for a 750-square-foot, one-bedroom unit. Garage conversions come in lower, usually $120,000 – $180,000 for a one-bedroom JADU or full ADU. Prefab installations from Cover, Dvele, or Boxabl generally land between $200,000 and $350,000 depending on module count and site work. The coastal versus inland material gap is real: the marine-grade package (Type 316 stainless fasteners, anodized frames, hot-dip post bases, sealed joints) adds roughly 6 – 10% to your total. The cheap inland spec near the coast costs more within a decade, because you’ll be replacing rusted hardware and failed frames before the mortgage is paid down. Call (254) 602-5618 for a free, written estimate.
We Also Serve Cities Near Los Angeles
Our Los Angeles crews take on ADU work in Huntington Park, South Gate, Bell, and Maywood. If you’re in one of those neighboring cities and want a written price before work starts, reach out. We’re part of the ADU Builders team serving the full Los Angeles basin, and we coordinate every job through our Los Angeles office.
Serving Los Angeles, CA - Our Local Coverage Area
We’re based in the Los Angeles 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 ADU Builders in Los Angeles
Yes. Los Angeles’s salt-air gradient is real, and the same ADU spec can sit 3 miles from the surf line and 12 miles inland. Coastal builds need Type 316 stainless fasteners, anodized or vinyl-alternative window frames, hot-dip galvanized post bases, and sealed paver joints. Inland Valley jobs can often use standard G90 hardware and latex paints. The ocean-side premium is not cosmetic; it’s corrosion resistance. Call (254) 602-5618 for a site-specific material quote.
We use the LADBS Standard Plan Program whenever the lot allows it, which cuts permitting from months to as little as 2 – 4 weeks. Salt air does not change the permit path itself; it changes the material spec we submit with the plans. Coastal lots in Very High Fire Hazard Severity Zones require ignition-resistant exteriors and ember-resistant vents, and we include those in the plan set from day one. Estimates are free, and we’ll tell you which path fits your lot before you commit to anything.
Yes, and this is one of the most common JADU scenarios we handle in Los Angeles. We remediate the rust first: hot-dip galvanized lintels, stainless fasteners, and new bottom plates where the original wood has rotted against the concrete. Then we frame the JADU per LADBS standards. The existing garage doesn’t disqualify you; it just means the first scope item is corrosion repair, not drywall.
Because the materials cost more, and skipping them costs more. The marine-grade package on a Los Angeles coastal ADU adds roughly 6 – 10% to the total project cost. Type 316 stainless fasteners run significantly higher than G90 zinc-plated hardware. Anodized aluminum and fiberglass window frames outprice vinyl. Sealed paver joints and marine-rated coatings add labor and material. The inland quote that undercuts us on a coastal lot is quoting the wrong spec.
Fastener inspection at every exterior connection. On an alley-facing garage conversion in the 90042 ZIP of Highland Park, our crew opened a 1950s wall to find the original steel window frames and bottom plates pitted through, so we replaced the rusted lintels with hot-dip galvanized steel, reset the openings with fiberglass frames, and capped the assembly with a James Hardie Artisan siding detailed for a 2-foot roof-to-wall clearance. We then flashed every fastener with stainless and sealed the thresholds with a polyurethane joint sealant rated for marine air. The homeowner now has a permitted JADU whose exterior hardware we expect to outlast the original garage by decades. Call (254) 602-5618 and we’ll do the same inspection on your lot.
Written by Russ Delmar, Owner at Lodgewick ADU Builders, serving Los Angeles since 2010.