Detached Accessory Dwelling Unit General Contractor in Marina del Rey, CA

Detached ADU construction in Marina del Rey starts with our team setting the foundation and building all core framing by hand, treating the structure as its own project from day one. Ridgeline Western Construction lays out and pours the slab or sets a raised-floor system as designed, then frames each wall, roof, and opening using the correct lumber, hardware, and sheathing as required by the plans. Window and door rough-ins are built to match both engineering and Title 24 energy requirements, with load paths and seismic details called out cleanly for inspection. This hands-on approach keeps the build tight and avoids delays during those critical first city sign-offs.

Every detached ADU in Marina del Rey is managed through one contract that covers everything—our self-performed framing and carpentry, plus all licensed plumbing, electrical, and HVAC subcontractor work. Roofing is delivered through a licensed partner, and all scheduling, trade coordination, and inspection signoffs are handled by us. We route city permit applications through the Marina del Rey building department, coordinate jobsite access that works for the owner, and close out the work with a single point of responsibility.

Tight lot layouts in Marina del Rey mean careful planning around setbacks, drainage, and privacy. We plan utility tie-ins and grading so that water runs correctly and the new build doesn’t affect the existing home. If site constraints or Marina del Rey code require fire-rated eaves, specialty assemblies, or engineered foundations for soft soil or slope, we follow the structural plans exactly—no shortcuts. Every phase is documented, every required city inspection is ready on time, and the job is sequenced to match the lot’s real-world conditions. In Los Angeles, each detached ADU stands on its own structure, built to meet California standards with nothing left half-finished.