Adu Construction Calabasas, CA

ADU construction services in Los Angeles for hillside and flat-lot homes.

Local ADU Construction Expertise

ADU Construction in Los Angeles

Los Angeles homeowners expand their properties with modern accessory dwelling units. From site planning to final inspection, we handle grading, retaining walls, and full ADU builds. Let's discuss your project timeline and next steps.

How We Work

Your ADU project moves through clear phases with transparent communication at every step.

Planning & Site Assessment

We begin with a detailed site walk and permit research specific to your Los Angeles neighborhood. Understanding setbacks, easements, and slope angles shapes the entire build.

Survey & Permits

We secure lot survey and file permit applications with LA planning. This step ensures your design meets zoning and building code requirements.

Grading Plan

We design drainage and site grading to manage Los Angeles hillside terrain. Proper slope prevents erosion and water damage during future rain events.

Demolition & Prep

We clear the site, remove old structures, and set up utility access points. All debris is hauled responsibly and the work zone is fenced for safety.

Retaining Walls & Foundation

Los Angeles slopes demand expert wall placement. We pour footings below frost line, build to code, and waterproof all surfaces.

Wall Build

We construct retaining walls using reinforced concrete or masonry. Each wall is backfilled and compacted to handle Los Angeles soil and weather loads.

Foundation Pour

We pour concrete slab or footings on prepped, compacted base. Reinforcement, proper depth, and slope set the stage for a durable ADU structure.

Inspection & Curing

City inspectors verify wall safety and foundation strength. We allow proper cure time before moving to framing phase.

ADU Build & Finish

Once foundation is set, framing, electrical, plumbing, and interior systems move in sequence. Each phase passes inspection before the next begins.

Framing & Shell

We frame walls, roof, and exterior envelope. All work meets Los Angeles Building & Safety code and seismic requirements for hillside homes.

MEP Systems

Licensed electricians and plumbers install wiring, HVAC, water, and gas lines. All connections meet permit requirements and city final inspection standards.

Finishes & Final

Drywall, flooring, cabinets, and paint wrap up the interior. Final inspection sign-off clears your ADU for occupancy.

You'll always know what's happening next—and when.

Our Services

Complete ADU construction and site work from foundation to final walkthrough in Los Angeles.

Accessory Dwelling Unit Construction

We build ADUs from the ground up on Los Angeles residential lots. Whether a detached studio, in-law suite addition, or full secondary dwelling, we manage permits, structure, systems, and finishes.

Detached ADU structures
Attached additions and conversions
Utility connections and site access

Modern ADU build with retaining wall in Echo Park, Los Angeles.

Retaining Wall Construction

Reinforced concrete retaining wall built for slope stability in Silver Lake area.

Los Angeles hillsides require expert wall design and build. We construct retaining walls that hold soil, prevent erosion, and support ADU foundations or landscape improvements.

Reinforced concrete walls
Masonry block and stone options
Proper backfill and drainage systems

Site Grading & Drainage

Proper grading protects your Los Angeles property from water damage and erosion. We design slopes, install drainage swales, and manage stormwater flow before building begins.

Lot survey and baseline measurement
Slope design for water runoff
Compaction and site readiness

Professional grading setup for ADU foundation in Los Feliz neighborhood.

Why It Matters

ADU construction on Los Angeles slopes demands expertise in permitting, structural safety, and code compliance.

Expert Permit Navigation

Los Angeles ADU regulations are strict and neighborhood-specific. We manage surveys, plan submissions, and city reviews so your build starts on solid legal ground.

Permit delays kill timelines. Our early planning and document accuracy speed approval.

Hillside & Seismic Readiness

Los Angeles sits in an active seismic zone. We design structures with proper reinforcement, secure footings, and drainage to withstand earthquakes and heavy rain.

Transparent Communication

We share timelines, phase milestones, and inspection results with you continuously. You understand where the project stands and what comes next.

Serving Los Angeles and Surrounding Areas

We work throughout Los Angeles neighborhoods with experience on hillside and flat-lot projects.

Local Knowledge of Los Angeles Projects

Every neighborhood in Los Angeles presents different soil conditions, slope angles, and permit requirements. Our teams understand the specific challenges of Echo Park, Silver Lake, Los Feliz, and other areas where ADU demand is highest.