Los Angeles Advanced ADU Builders – ADU Services Overview
Los Angeles Advanced ADU Builders is an ADU contractor and ADU builder serving homeowners across Los Angeles with over 20 years of experience in the field. The company handles a broad range of accessory dwelling unit projects, including custom builds, garage conversions, detached ADU construction, granny flat builds, Junior ADU (JADU) construction, modular ADU installations, and prefab ADU setups.
Their services cover the full project lifecycle — from initial site evaluation and architectural design through permitting, structural engineering, and final construction. This full-service approach is intended to reduce delays and manage the complexity that comes with building in Los Angeles, where zoning regulations, HPOZ restrictions, and hillside requirements can complicate the process.
According to the California Department of Housing, garage conversions account for approximately 26% of new ADUs in Los Angeles. Los Angeles Advanced ADU Builders handles these conversions as part of their broader portfolio, which also includes basement ADU conversions, above-garage ADUs, attached room additions, second-story ADU additions, and detached backyard cottage builds.
Types of ADUs They Build
Los Angeles Advanced ADU Builders works with 13 types of ADUs, each tailored to the specific lot, budget, and goals of the homeowner. These include:
- Detached Backyard ADUs – Separate stand-alone units, typically up to 1,200 sq. ft., suitable for rental income or multigenerational living.
- Attached Room Additions – Extensions connected to the main home, ranging from 400 to 1,200 sq. ft.
- Garage-to-Living Conversions – Converted garages (200–400 sq. ft.) repurposed as independent rental units or in-law suites.
- Junior ADUs (JADUs) – Units up to 500 sq. ft. built within the existing home, with a kitchenette and separate entry.
- Basement ADU Conversions – Legal basement apartments ranging from 400 to 800 sq. ft.
- Above-Garage ADUs – New living units constructed above an existing garage, adding 400–1,000 sq. ft.
- Second-Story ADU Additions – Vertical builds above a garage or home, preserving yard space.
- Modular and Prefab ADUs – Factory-built units delivered and installed in 8–12 weeks with reduced on-site disruption.
- Shipping Container ADUs – Compact, eco-friendly units (160–320 sq. ft.) suited for backyard placement.
- Tiny Home ADUs – Compact units between 150 and 400 sq. ft. offering affordable housing options.
- Loft-Style ADUs – Open-plan units with lofted ceilings, suited for studios or contemporary rentals.
- Corner Lot ADUs – Designed to take advantage of corner-lot access for easier tenant parking and entry.
- Multi-Unit Property ADUs – One or two ADUs added to existing duplexes or triplexes in compliance with California law.
Key Services in the ADU Build Process
Beyond construction, Los Angeles Advanced ADU Builders provides a range of planning and compliance services that are part of every project:
- Custom ADU Architectural Design – Site-specific plans developed to meet LADBS and CRC requirements, helping avoid revision delays.
- 3D Renderings and Project Visualization – Using tools like SketchUp and Revit to help clients finalize layouts and finishes before construction begins.
- ADU Permit Application and Processing – Full management of permit submissions to LADBS, including Title 24 compliance and structural reports.
- Zoning and Code Compliance Assistance – Alignment with LAMC zoning laws and state regulations including SB 9 and SB 13, with attention to HPOZ and Hillside zones.
- ADU Site Evaluation – Pre-design assessment of setbacks, utility access, and sewer line locations using LA County Assessor maps and LADWP data.
- Structural Engineering – Verification of foundations, framing, and load-bearing elements to meet local building codes.
- ADU Space Optimization and Layout Planning – Early-phase design work focused on maximizing usable square footage and storage.
Los Angeles Advanced ADU Builders reports having completed over 500 ADU builds. As a locally based contractor, they are familiar with the specific regulatory environment in Los Angeles, including the nuances of SB 9, SB 13, and local zoning ordinances that affect accessory dwelling unit projects throughout the city.
