Garage Conversion to ADU in Los Angeles: Contractors & Real Projects

Your garage may already have the foundation, walls, and roof for a second living space. Across the Los Angeles-area projects below, contractors have converted garages for as little as $75,000, expanded them to fit 2 bedrooms, built a second story, and rebuilt one after water problems made preserving the original structure impractical.

The 6 projects also show just how broad a garage conversion to ADU in Los Angeles can be. Construction timelines range from 10 to 52 weeks, and the finished spaces include studios, 1-bedroom ADUs, a 2-bedroom ADU, and a space designed to double as a photography studio.

The projects were completed by the contractors named here. Block Renovation hosts the contractor profiles and project pages, but Block did not complete the work.

How much does a garage conversion to ADU cost in Los Angeles?

Among the 6 Los Angeles-area projects profiled here, published totals run from $75,000 to $300,000. The lower-cost examples converted garages into a 1-bedroom ADU and studio, while several of the projects at $190,000 and above involved additions, another story, substantial structural or site work, or upgraded finishes.

For another reference point, Block's broader benchmark for converting a standard 2-car garage into an ADU is $110,000 to $180,000. Simple conversions with favorable conditions can come in under $100,000, while complicated projects in high-cost markets can exceed $200,000. That benchmark isn't specific to Los Angeles, so the completed local projects provide useful context for how the numbers move once the actual property and scope enter the picture.

Garage-to-ADU conversion contractors in Los Angeles

Otto Build

A Los Feliz homeowner wanted somewhere her mother could stay for weeks at a time, with enough privacy to feel at home and a strong connection to the backyard where the family entertains.

The existing garage didn't cooperate. Significant water problems led Otto Build to rebuild it from the foundation for Dinner Parties & Mom. The result was a 495-square-foot, 1-bedroom ADU with a full kitchen, laundry, vaulted ceilings, a shower skylight, and a large accordion door facing the yard. The project cost $300,000 and took 52 weeks.

Otto's Photo Studio & Guest House in Westchester started with a much healthier 2-car garage. Its relatively new roof and gutters could remain. The heavily sloped floor still needed correction, drainage along the property line needed attention, and opening the hip roof into a vaulted ceiling required new structural support. Several skylights bring in enough overhead light for the space to double as a photography studio.

Scope: Westchester 2-car garage converted into a photo studio and guest house; separate Los Feliz garage rebuilt as a 495-square-foot, 1-bedroom ADU.

Cost: $250,000 for Photo Studio & Guest House; $300,000 for Dinner Parties & Mom.

Time frame: 40 weeks for Photo Studio & Guest House; 52 weeks for Dinner Parties & Mom.

Idea worth borrowing: Price the structure you're trying to save. When moisture, drainage, slab, and framing repairs start absorbing the presumed savings, get a second number for rebuilding the problem areas.

MY Home Builders

For its Garage Conversion & Addition to ADU, MY Home Builders expanded the original garage by roughly 250 square feet. The finished ADU reached approximately 675 square feet with 2 bedrooms and 1 bathroom for $190,000.

On a garage-sized footprint, another 250 square feet can carry a lot. There is room for a second bedroom without asking the kitchen and living room to squeeze into whatever floor area remains.

Scope: Garage conversion plus approximately 250 square feet of new construction, resulting in an approximately 675-square-foot, 2-bedroom, 1-bath ADU.

Cost: $190,000.

Idea worth borrowing: Before shrinking the living room to force in another bedroom, price a small addition. You may only need a few hundred additional square feet to get the floor plan you actually want.

LUDIS Inc.

LUDIS took the Brockton ADU upward, pairing a Los Angeles garage conversion with a second-story addition. The project cost $300,000 and took 35 weeks.

Going up introduces work that a straightforward interior conversion doesn't need. Another story can require new footings or reinforcement, additional framing, stairs, and a new roof. The payoff is more interior space without pushing the building substantially farther into the backyard.

Scope: Los Angeles garage conversion with a second-story addition.

Cost: $300,000.

Time frame: 35 weeks.

Idea worth borrowing: Put a value on your yard before expanding into it. A second story may cost more structurally, but it can preserve outdoor space you'd otherwise give to the ADU.

Everlast Home Builders

Everlast Home Builders' ADU Naylor converted a detached Los Angeles garage into a 1-bedroom ADU with a kitchen and bathroom. At $75,000 and 10 weeks, it is both the least expensive and fastest project in this group.

Scope: Detached garage converted into a 1-bedroom ADU with a kitchen and bathroom.

Cost: $75,000.

Time frame: 10 weeks.

Idea worth borrowing: Treat construction time as something worth comparing alongside price. If one contractor expects 10 weeks and another expects 6 months, ask what scope, structural work, utility work, or material lead times account for the difference.

Alto Builders

Alto Builders' Zelzah ADU combines a garage conversion with an addition for a finished footprint of roughly 500 square feet. The ADU includes a dedicated bedroom. It cost $210,000 and took 28 weeks.

At roughly 500 square feet, a separate bedroom starts becoming easier to accommodate without gutting the shared living space. Draw both versions anyway. The 1-bedroom plan only wins if the kitchen, living room, circulation, and storage still work once the walls go in.

Scope: Approximately 500-square-foot garage conversion and addition with a dedicated bedroom.

Cost: $210,000.

Time frame: 28 weeks.

Idea worth borrowing: At around 500 square feet, test a true 1-bedroom plan before defaulting to a studio. Pay close attention to what remains for the kitchen, living room, and storage once the bedroom walls go in.

Tehran Construction & Remodeling

Tehran Construction converted a garage into a studio-style living space with a full kitchen and bathroom for its Junior ADU project. The work cost $80,000 and took 14 weeks.

California uses "JADU" more narrowly than everyday project naming sometimes suggests. A legal JADU is limited to 500 square feet and must sit within a single-family residence. An attached garage can potentially qualify because it forms part of the residence; a detached garage cannot.

Scope: Garage converted into a studio-style living space with a full kitchen and bathroom.

Cost: $80,000.

Time frame: 14 weeks.

Idea worth borrowing: When a separate bedroom would leave the main room chopped up, keep a studio layout in contention. One larger living and sleeping area can make better use of a very tight footprint.

Where a 2-car garage conversion budget goes

A garage in decent condition can still require a surprising amount of work before anyone installs cabinets or flooring. Block's 2-car garage guide breaks several major pieces of the budget into these ranges:

Those line items put Otto Build's $250,000 Westchester project in better context. The existing garage was in good condition, but the work included correcting the sloped slab, dealing with drainage, creating structural support for a vaulted ceiling, and installing multiple skylights. The homeowner also chose custom white oak cabinetry, high-end appliances, engineered white oak floors, and custom bathroom finishes.

For a starting estimate based on your own garage size, condition, intended use, and finish level, Block's Garage Conversion Calculator can give you a more individualized number.

How much does a garage conversion cost per square foot?

Block uses $100 to $300 per square foot as a broad benchmark for garage conversions, compared with $250 to $500 per square foot for detached new construction.

Cost per square foot is better used as a cross-check than as your only budgeting method. A 400-square-foot ADU still needs a kitchen, bathroom, electrical work, plumbing, HVAC, and permits, so many expenses don't shrink in proportion to the floor plan.

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Planning a garage conversion in Los Angeles: what comes first

The finished floor plan isn't the first decision. For an LA-area garage, start by figuring out who regulates the property, what legally exists today, and what condition the structure is actually in.

1. Confirm your jurisdiction

A Los Angeles mailing address doesn't necessarily put a property under the City of Los Angeles building department. Your home could be in the city, unincorporated LA County, or a separate incorporated city such as Inglewood, Glendale, Culver City, or Pasadena.

Confirm the permitting agency before using a zoning rule, application checklist, or standard that may belong to the municipality next door.

2. Pull the property and garage records

For properties within the City of Los Angeles, ZIMAS lets you search property-specific zoning and land-use information as well as planning applications and building-permit history.

That record check is especially helpful with older garages. An addition or structural alteration made decades ago may not be obvious during a walkthrough.

3. Inspect the garage itself

Check the slab and foundation, framing, roof, drainage, signs of water intrusion, electrical capacity, and possible sewer and water routes.

Measure the height too. Garage floors frequently slope and may need to be leveled or built up, costing you inches in the process. Block's 2-car garage conversion guide flags roughly 7 to 7.5 feet as a common finished-height requirement. A low garage deserves an early measurement before someone designs a floor assembly that makes the problem worse.

4. Choose the basic project type

Once the site has been evaluated, you can decide whether it makes more sense to:

• Convert the existing garage.
• Convert it and add square footage.
• Build another level above it.
• Rebuild a garage whose condition makes preservation unattractive.
• Consider another ADU location on the lot.

A garage conversion and a garage conversion with an addition can look similar in a project gallery, yet their budgets and permitting scopes can be very different.

5. Check the rules that can favor an existing garage

California gives conversions of existing accessory structures some important advantages. An ADU created inside an existing accessory structure does not need a new setback. For common new-construction ADU categories covered by state law, a local agency cannot require more than 4 feet of side and rear setback. The 4 feet is the maximum setback a jurisdiction can impose in those cases, not a statewide requirement that every ADU sit exactly 4 feet from the property line.

You also don't have to replace off-street parking lost when a garage is converted into an ADU.

Existing structures can follow different size rules from newly constructed ADUs, so don't assume that a size limit you saw for a new detached unit automatically applies to a conversion. The California HCD ADU Handbook is the better place to check the statewide rules before applying them to your property.

Converting the garage also doesn't necessarily use up every ADU opportunity on a single-family lot. Current state rules allow certain ADU categories in combination, including an ADU created from existing space, a JADU, and a newly constructed detached ADU, subject to the requirements for each.

6. Develop the plans and submit the application

Once the basic approach is settled, the floor plan, structural work, utilities, openings, energy requirements, and any addition can be documented.

Changes that took effect January 1, 2026 give a permitting agency 15 business days to determine whether an ADU application is complete. If the agency misses that deadline, the application is deemed complete. For a complete application on a property with an existing dwelling, the agency generally has 60 days to approve or deny it.

Don't build your entire preconstruction schedule around 60 days. Design, engineering, application preparation, and revisions happen outside that basic review clock, so the time from first sketch to issued permit will be longer.

7. Compare contractor scopes against the same plan

Once the project is defined, you can see whether contractors are actually pricing the same job. Look for differences in structural work, slab repair, drainage, utility upgrades, windows, cabinetry, appliances, exterior restoration, and responsibility for permitting.

For the construction sequence itself, Block's guide to converting a garage into living space goes deeper on the work after planning. The 2-car garage-to-ADU guide has more detail on the Otto and LUDIS projects, structural considerations, layouts, and construction costs.

Useful resources for Los Angeles homeowners considering a garage conversion

• California HCD ADU Handbook: Use it for current statewide rules covering setbacks, parking, permitting, JADUs, and other ADU requirements.
• ZIMAS: City of Los Angeles homeowners can look up property-specific zoning, land-use information, planning applications, and building-permit history.

Find a Los Angeles garage conversion contractor with Block Renovation

Once you know what you're asking the garage to become, Block can match your project with vetted local contractors whose experience fits the work.

The scope review also gives you another set of eyes on the proposals before you commit. One contractor may have included slab correction or drainage that another left out entirely. Finding that difference while you're comparing bids is far better than discovering it after demolition.

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