Detached ADU Builder in Los Angeles
Build a private, fully independent living space in your backyard with AXMIS Construction. We design and build custom detached ADUs throughout Los Angeles, the South Bay, and the Westside—managing feasibility, architectural coordination, permits, utilities, construction, and final inspections.
What Is a Detached ADU?
A detached accessory dwelling unit is a separate residential structure built on the same property as an existing primary home. Unlike an attached ADU, garage conversion, or home addition, it does not share walls with the main residence.
A detached ADU can include its own entrance, kitchen, bathroom, bedroom, living area, laundry, storage, heating, cooling, and utility connections. It may be planned as a studio, one-bedroom home, two-bedroom residence, guesthouse, or flexible multigenerational living space.
Because every Los Angeles property has different dimensions, access conditions, utility locations, setbacks, and development requirements, each detached ADU begins with a detailed feasibility review.
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.
Built for Southern California Properties
Building a detached ADU in Los Angeles requires more than selecting a standard floor plan. The design must respond to available space, existing structures, access, utilities, grading, drainage, privacy, and applicable development standards.
What makes detached ADU construction complex?
A detached ADU still requires a foundation, structural system, roof, kitchen, bathroom, electrical, plumbing, HVAC, insulation, and life-safety measures—all coordinated within a compact backyard site.
Can a detached ADU match the main house?
Yes. Roof forms, materials, windows, doors, colors, and architectural details can be selected to complement the primary residence.
Can AXMIS build from existing plans?
Yes. We review constructability, structural details, utilities, specifications, scope, budget assumptions, and permit status before construction.
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
Many Los Angeles residential properties may qualify. Available size and placement depend on the lot, existing structures, setbacks, easements, utilities, access, and current requirements. AXMIS begins with a property-specific feasibility review.
The possible floor area depends on state and local standards, the proposed layout, property conditions, height limitations, and other site-specific factors.
Cost depends on size, architectural design, property access, foundation conditions, utility work, service upgrades, finish level, permits, and site improvements.
The schedule depends on design, permitting, selected materials, site conditions, utility work, inspections, and overall project complexity.
The residence requires electrical power, water, sewer service, water heating, and HVAC. Required upgrades or metering depend on the existing property infrastructure.
