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ADU Contractor Los Angeles

About ADU Pro LA

At ADU Pro LA, we empower homeowners in Los Angeles to expand their living space through smart, code-compliant ADU solutions. Whether it’s a garage conversion, detached unit, or full design and permit service — we bring expertise, care, and precision to every build.

Basement ADU Conversion

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Turn your unused basement into a stunning, fully livable ADU. We handle every step — design, permits, and construction — across Los Angeles.
Basement ADU Conversion
Basement Conversion

About the service

Basement ADU conversions are a cost-effective way to transform unused space into a fully functional living unit. Whether you're building out a rental unit, guest quarters, or personal suite, basement conversions increase property value and improve livability — all within your home's existing footprint.

At ADU Pro LA, we bring expert design, engineering, and construction to basement conversions in Los Angeles. We ensure your unit meets all local code requirements while maximizing space, light, and comfort for future use — whether for family, tenants, or work-from-home flexibility.

Why choose us

From moisture mitigation to egress solutions and utility upgrades, our team knows exactly how to make your basement conversion safe, stylish, and fully compliant with ADU standards.

01
Basement-Specific Design We address ceiling height, lighting, ventilation, and layout challenges common to basements with creative, code-compliant solutions.
02
Complete Waterproofing We ensure all basements are properly sealed and insulated to prevent future moisture issues and meet energy efficiency standards.
03
Integrated ADU Permitting Our team handles the full permitting process with LADBS and ensures compliance with all LA-specific ADU regulations.
04
Start-to-Finish Execution From demo to drywall, we deliver seamless project coordination and post-conversion support.
Finished Basement ADU

Services offered

  • Basement Feasibility Analysis: Site visit and technical evaluation to determine what’s structurally and legally possible under Los Angeles ADU laws.
  • Custom ADU Design: We maximize headroom, layout, natural lighting, and egress solutions with tailored floorplans and finishes.
  • Turnkey Conversion Build: Includes structural changes, slab work, waterproofing, utilities, kitchen & bath installation, and full finishing.
  • Is my basement eligible for ADU conversion?
    Your basement must meet minimum ceiling height, access, ventilation, and safety code requirements. We provide a free evaluation to determine eligibility.
  • How much does a basement conversion cost?
    Costs vary based on size, layout, and utility needs. Most projects range between $90,000 and $200,000 depending on finish level and site conditions.
  • How long will the conversion take?
    Timelines range from 4 to 7 months including permits. We provide a detailed construction schedule during your initial consultation.
  • Do you help with financing?
    Yes, we can connect you with ADU-friendly lenders and help you explore financing options like renovation loans or HELOCs.
  • Can I rent out a converted basement?
    Yes! Once permitted as an ADU, your converted basement can be legally rented as long-term housing in Los Angeles.