Garage Conversion ADU Builder in Los Angeles
Turn an existing garage into a comfortable, code-compliant living space without constructing an entirely new building. AXMIS Construction manages garage conversion ADU projects throughout Los Angeles—from feasibility and design coordination to permits, utilities, interior construction, and final inspections.
What Is a Garage Conversion ADU?
A garage conversion ADU transforms an existing attached or detached garage into an independent residential unit. The completed space can include its own entrance, kitchen, bathroom, sleeping area, living space, storage, heating, cooling, and required safety features.
Using an existing structure can preserve more of the property’s outdoor area and may reduce the amount of new foundation and framing work. However, the garage must still be evaluated for structural condition, ceiling height, moisture protection, insulation, utilities, ventilation, natural light, and residential code compliance.
AXMIS develops each conversion around the existing building and the homeowner’s intended use, creating a practical residence rather than a basic finished garage.
Custom Planned
Designed Around the Property
Full-Service
Preconstruction Through Completion
LA Based
South Bay and Westside Projects
The right ADU for the property
AXMIS evaluates the existing lot, structures, access and intended use before determining the most practical direction.
ADU Design & Permitting
Ground-up homes shaped around your site, architecture, and way of living. Ground-up homes shaped around your site, architecture, and way of living.
Attached ADUs
Ground-up homes shaped around your site, architecture, and way of living. Ground-up homes shaped around your site, architecture, and way of living.
Detached ADUs
Ground-up homes shaped around your site, architecture, and way of living. Ground-up homes shaped around your site, architecture, and way of living.
Garage Conversion ADUs
Ground-up homes shaped around your site, architecture, and way of living. Ground-up homes shaped around your site, architecture, and way of living.
Junior ADUs
Ground-up homes shaped around your site, architecture, and way of living. Ground-up homes shaped around your site, architecture, and way of living.
Turnkey ADU Construction
Ground-up homes shaped around your site, architecture, and way of living. Ground-up homes shaped around your site, architecture, and way of living.
Every square foot has to work harder
Property Feasibility
The lot, existing structures, access, setbacks, utilities and likely construction constraints are reviewed before the project advances.
Design Coordination
Architecture, engineering and consultants are aligned around a single buildable plan before permitting begins.
Utility Coordination
Electrical, plumbing, sewer, water, HVAC and site connections are assessed as part of early constructability planning.
Transparent Budgeting
Scope, allowances, selections and assumptions are documented so the owner can understand the budget before field work begins.
Our process,
step by step
- Site protection and layout
- Grading and excavation
- On-site utility trenching
- Under-slab plumbing
- Footings, rebar and slab
- Wall and roof framing
- Sheathing and hardware
- Roofing and waterproofing
- Windows and exterior doors
- Exterior cladding
- Plumbing rough-in
- Electrical rough-in
- HVAC installation
- Rough inspections
- Insulation and air sealing
- Drywall and paint preparation
- Cabinets and countertops
- Tile and flooring
- Interior doors and trim
- Interior painting
- Fixtures and appliances
- Finish plumbing and electrical
- Touch-ups and punch list
- Final inspections
- Cleaning and handover
One structure.
Multiple possibilities
The best layout and specifications depend on who will use the ADU now and how the property may need to adapt in the future.
Multigenerational Living
Private, nearby space for parents, adult children or extended family with independent living functions.
Guest Residence
A comfortable place for visitors that preserves privacy for both the guests and the main household.
Work & Creative Space
A quiet studio, office or flexible workspace separated from daily activity inside the primary residence.
Long-Term Flexibility
Additional living space that can evolve as household needs, work patterns and family arrangements change.
Property Improvement
Thoughtfully designed square footage that can improve the usefulness and long-term appeal of the property.
Independent Living
A complete residence with its own kitchen, bathroom, sleeping area, mechanical systems and entrance.
Before Building a Garage Conversion ADU
Converting a garage into a residence requires a coordinated review of the existing structure, foundation, roof, utilities, openings, fire separation, parking conditions, and local requirements. AXMIS plans the conversion around the actual building so potential construction issues are identified early.
Can any garage be converted into an ADU?
Not automatically. The garage must be reviewed for structural condition, dimensions, foundation, ceiling height, access, utilities, ventilation, and its ability to meet residential safety and energy requirements. AXMIS begins with a property and structure evaluation.
Does a garage conversion ADU need a kitchen and bathroom?
Yes. A legal ADU functions as an independent residence and includes permanent provisions for living, sleeping, cooking, and sanitation. The approved design must also address electrical, plumbing, HVAC, hot water, and required ventilation.
Can I convert an attached or detached garage?
Either may be possible. An attached garage requires careful coordination with the primary residence, while a detached garage may need longer utility routes and a separate review of the existing structure. Feasibility depends on the individual property.
How much does a garage conversion ADU cost in Los Angeles?
Cost depends on the garage condition, structural upgrades, foundation repairs, plumbing and sewer routes, electrical capacity, new windows and doors, insulation, kitchen and bathroom specifications, permits, and finish level.
Built for the way you want to live
From a ground-up residence to a transformative remodel, every project receives the same rigorous planning and field oversight.
ADU / Service Areas
Before starting an ADU project
A garage was not originally designed as living space. The project may require foundation or slab corrections, structural reinforcement, moisture protection, insulation, new windows, utility extensions, fire-safety improvements, and a complete residential interior.
Yes. Exterior materials, windows, doors, colors, trim, and roof details can be coordinated with the main home. Inside, the layout and finishes can be developed to feel like a complete residence rather than a converted utility space.
Yes. AXMIS can review existing architectural or permit plans. Before construction, we evaluate the garage condition, constructability, structural details, utility strategy, specifications, project scope, budget assumptions, and permit status.
