Trusted ADU for Los Angeles Homeowners
An accessory dwelling unit, or ADU, is one of the smartest ways to add living space and rental income to a Los Angeles property. But getting one from permit to final inspection is not a weekend project. It takes design, structural work, foundation, electrical, plumbing, HVAC, and finishing across more trades than most homeowners want to coordinate themselves. That’s exactly why Cedarwell’s family of home-service brands exists. We bring every trade under one standard, so your ADU in Los Angeles moves forward with vetted, background-checked local pros who answer to one shared guarantee: the Cedarwell Care Promise. Call (805) 973-6110 to talk through your ADU project with our team.
Key Takeaways for Your Los Angeles ADU
- One point of contact, every trade covered. Foundation, framing, roofing, HVAC, electrical, plumbing, garage door, windows, doors, insulation, and more all under the Cedarwell family.
- The Cedarwell Care Promise backs every job. Same standard, same guarantee, no matter which brand in the family handles your ADU.
- Los Angeles permitting knowledge matters. Our local pros understand LA’s ADU ordinance, setbacks, utility requirements, and the inspection timeline.
- Free estimates with written pricing. You’ll know the cost before any work begins, never after.
- Homeowners across 41 states trust the Cedarwell family. National scale, local ownership, one promise.
What Our ADU Service Includes
An ADU is a full home build in miniature. That means no single contractor is enough. Cedarwell coordinates the full scope so you’re not juggling five different phone numbers. Here’s what we cover, trade by trade.
ADU Construction & Project Coordination
This is the core of our ADU in Los Angeles: turning an approved plan into framed walls, a poured foundation, and a weathertight structure. We handle demolition, site prep, foundation and slab work, framing, roofing, and interior finishing. Our construction team works from your city-approved plans and keeps the schedule moving. If an inspection requirement changes mid-project, we adjust and communicate rather than leaving you to figure it out alone.
ADU Electrical & Plumbing
An ADU needs its own electrical service or a properly sized subpanel, plus new circuits for a kitchenette, bathroom, laundry hookups, and lighting. Plumbing includes supply lines, waste lines, venting, and sometimes a separate water heater. Our licensed electricians and plumbers ensure the work meets Los Angeles building code the first time. Failed inspections delay occupancy and add cost, so we get the rough-in right before drywall ever goes up.
ADU HVAC & Insulation
Los Angeles summers make climate control non-negotiable, even in a small unit. We install efficient mini-split systems, ductwork where the design calls for it, and proper insulation for walls, floors, and attic spaces. Correct insulation matters year-round: it keeps the ADU cool in August and warm on those occasional chilly winter nights. A properly sized system also keeps utility bills low, which tenants and in-laws both appreciate.
ADU Windows & Doors
Natural light and security come down to window and door selection and installation. We install energy-efficient windows that meet California Title 24 requirements and exterior doors that seal tightly against the weather. For attached ADUs with a private entrance, a solid, well-installed entry door matters for both privacy and security. Our team handles framing adjustments, flashing, and final trim so the finish looks as good as it functions.
ADU Garage Door Installation
Garage conversions are the most common ADU path in Los Angeles because the structure already exists. If your garage stays partially functional, or if the design includes a roll-up door for storage or parking, we install and service garage doors from brands like Raynor, LiftMaster, Chamberlain, and Genie. A properly balanced door with a modern opener adds convenience and keeps the space usable. Our garage door brand within the Cedarwell family brings decades of repair and installation experience to every conversion.
ADU Roofing & Exterior
The roof on your ADU has to tie into the main structure correctly, especially for attached units. We handle shingle, tile, and membrane roofing, plus gutters, fascia, and exterior siding where needed. Los Angeles rain may be seasonal, but it arrives in concentrated bursts, and a leak during a storm can undo months of interior work. Our roofing pros ensure your ADU in Los Angeles stays dry from day one.
ADU Damage Restoration & Ongoing Care
Construction sometimes uncovers hidden problems: termite damage, water intrusion, or dry rot in an existing garage being converted. Our damage restoration brand handles remediation before new work goes on top. After your ADU is complete, the same family of brands can handle maintenance, repairs, and seasonal checks. Homeowners stay with one trusted name for the life of the property, not just the build.
Whatever scope your ADU in Los Angeles requires, the Cedarwell family coordinates it under one promise. You get the same standard across every trade, from the first concrete pour to the final door handle.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Brands We Service for ADU
Many Los Angeles garages being converted into ADUs have existing garage door openers and rails from LiftMaster or Chamberlain. Our garage door pros have installed and serviced hundreds of these systems, and we stock their OEM parts for repairs and upgrades. If your ADU design keeps a garage door, we’ll make sure the opener, sensors, and spring system are safe, balanced, and code-compliant for a living space.
For new ADU garage doors, we regularly install Raynor and Genie products. Raynor doors are known for durable steel construction that holds up to coastal air and sun exposure, while Genie openers offer reliable belt-drive operation that’s quiet enough for an attached living unit. Whether you have Raynor, LiftMaster, Chamberlain, Genie, or any other make, we can service it and bring it up to the standard your ADU project requires.
Signs You Need ADU Right Now
- You’re paying for space you don’t use. A two-car garage in Los Angeles holds a car, boxes, or nothing at all. Converting it to an ADU turns dead square footage into rental income or a home for family. That’s equity earning its keep.
- Your family is growing faster than your floor plan. Aging parents, adult children, or a new baby can outgrow a house quickly. An ADU adds a private, comfortable living space without the cost and disruption of a full move.
- Rental income would change your budget. Los Angeles has strong demand for studio and one-bedroom rentals. An ADU can generate meaningful monthly income, and the city’s ADU ordinance has made permitting more predictable than ever.
- Your garage shows structural wear. Cracked slab, poor drainage, or a sagging roofline means that garage isn’t long for this world as a storage space. Converting it now lets you address structural issues and add value in one project rather than two.
- You want to work from home without losing a bedroom. A detached ADU makes an ideal home office, studio, or workspace. You get separation from household noise, and the property gains a flexible room that future owners or renters will value.
Our ADU Process - Step by Step
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Initial consultation and site review. We walk your property, measure the existing structure or build site, and listen to what you need the ADU to do. This is when we talk about budget range, timeline expectations, and whether a garage conversion, attached addition, or new detached build makes the most sense.
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Design, plans, and permitting. Our team coordinates with drafters and engineers to produce plans that meet Los Angeles ADU ordinance requirements. We handle setbacks, utility connection points, and Title 24 energy compliance. Once submitted, we track the permit through the city and respond to any plan-check comments.
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Site preparation and rough-in. Demolition, excavation, foundation, framing, and roofing happen first. Then electrical, plumbing, and HVAC rough-in go in before drywall. We schedule inspections at the right points so the project never stalls waiting on the city.
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Finishing and systems installation. Insulation, drywall, paint, flooring, windows, doors, fixtures, and the garage door (if applicable) all come together. Every trade works under the Cedarwell family standard, and we do a full quality walkthrough before your final city inspection.
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Final inspection and handover. We accompany the inspector, address any final items, and walk you through the finished unit. You get documentation on all installed systems, warranty details, and one number to call for anything that comes up later: (805) 973-6110.
How Much Does ADU Cost in Los Angeles?
ADU costs in Los Angeles depend on whether you convert an existing garage or build new. A garage conversion typically runs $120,000 to $200,000, while a new detached ADU starts around $250,000 and can exceed $400,000 for a unit with high-end finishes. Attached additions fall between those ranges depending on size and how much of the existing structure you’re modifying. These numbers include design, permits, construction, and all major systems.
What affects the price most: the condition of the existing structure, site access for equipment, foundation type, utility connection distance, and finish level. A simple studio with a kitchenette and one bath costs less than a two-bedroom with laundry and a full kitchen. The best way to avoid overpaying is to get a written, itemized estimate before signing anything. Our estimates are free and include labor, materials, and permit-related costs spelled out clearly. No number changes once we shake hands on the scope. Call (805) 973-6110 to schedule a free ADU consultation for your Los Angeles property.
ADU Near Los Angeles - Our Service Area
Our ADU teams cover the greater Los Angeles area, from the San Fernando Valley down to the South Bay and across the San Gabriel Valley. If you’re within the LA metro, we can reach your property promptly for a site visit and keep your project moving on schedule. For homeowners researching a range of home services beyond ADU work, our home services overview connects you to every trade under the Cedarwell family, all backed by the same promise. And for full details on this specific offering, visit ADU in Los Angeles.
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.
Frequently Asked Questions - ADU in Los Angeles
An ADU, or accessory dwelling unit, is a self-contained living space on the same property as a single-family home. It has its own entrance, kitchen, bathroom, and sleeping area, and can be attached to the main house, converted from a garage, or built as a new detached structure. Los Angeles has made ADUs easier to permit in recent years, which is why so many homeowners are adding them for rental income or extended family.
A garage conversion typically takes four to six months from start to finish once permits are issued. A new detached ADU runs six to ten months depending on site conditions and the complexity of the design. Permitting with the city can add one to three months before construction starts. We give you a realistic timeline during the consultation and keep you updated at every phase.
Garage conversions in Los Angeles generally run $120,000 to $200,000, while new detached ADUs start around $250,000 and can top $400,000 for larger or higher-end units. Your final number depends on size, finishes, site access, and utility work. We provide a written, itemized estimate for free, and the price we quote is the price you pay. Call (805) 973-6110 for an exact quote on your property.
Yes. Our garage door brand within the Cedarwell family has serviced hundreds of LiftMaster and Chamberlain openers across Los Angeles, and we stock OEM parts for both. If your garage conversion keeps an existing door, we check the opener, springs, cables, and sensors and bring everything up to code for a living space. Raynor and Genie systems are covered as well.
For urgent issues like a structural failure, water intrusion, or a garage door that won’t close on a unit under conversion, we prioritize emergency calls from ADU clients. A building site left open creates risk for theft, weather damage, and safety. Call (805) 973-6110 and we’ll dispatch the right trade from our family of brands as quickly as possible.
Every ADU project is covered by the Cedarwell Care Promise, our family-wide guarantee that applies to workmanship across every trade involved in your build. Individual systems like the HVAC unit, water heater, and garage door opener also carry their manufacturer warranties. We walk you through all warranty paperwork at handover so you know exactly what’s covered and for how long.
Clear the area around the build site, move vehicles and personal items out of the garage if you’re converting, and make sure crews have a clear path to the work area. If you have an HOA, check their rules early, though California law limits how much HOAs can restrict ADUs. We handle permits and scheduling, but a little prep on your end keeps the first week moving fast.
Schedule Your ADU Service in Los Angeles Today
Every day with an unfinished ADU is a day of lost rent, delayed family plans, or missed workspace. The Cedarwell family is ready to bring every trade to your Los Angeles project under one promise and one guarantee. Call (805) 973-6110 now for a free, no-obligation consultation and a written estimate. We’ll walk the property, answer your questions, and show you exactly what it takes to get your ADU done right.
Written by Noel Carranza, Owner at Cedarwell, serving Los Angeles homeowners through a family of trusted home-service brands across 41 states.