Marina del Rey room additions operate in one of the most intensively regulated coastal areas in California. The entire community is within the California Coastal Zone, triggering Coastal Development Permit (CDP) requirements for virtually every structural addition. Marina del Rey’s residential properties — ranging from townhomes and condominiums to single-family homes on the peninsula and in the Del Rey Hills area — present diverse addition opportunities, but the Coastal Zone overlay affects every project. Home values range from $1.5M–$5M+ for single-family homes and townhomes. APLA Construction (CA Lic #1136359) handles room additions throughout Marina del Rey, managing CDP permits, LADBS structural review, and all construction.
What you get: Single room addition, 150–240 sq ft. Full Coastal Zone CDP preparation and submission. LADBS structural plan check. Foundation, framing, MEP, finishes at Marina del Rey quality standards. At Marina home values of $1.5M–$2.5M, a bedroom addition adds $100K–$160K in market value while the Coastal Zone complexity adds to the regulatory timeline.
What you get: Primary bedroom with attached primary bathroom and walk-in closet at Marina premium-market standards. Coastal Development Permit plus LADBS plan check. Natural stone tile, walk-in shower, heated floor, custom millwork. At $2.5M–$4M Marina home values, a primary suite addition is transformative for livability and resale positioning.
What you get: Full second story or major multi-room addition. In Marina del Rey, vertical additions frequently unlock marina, channel, or ocean views that substantially increase market value. Coastal Development Permit may require Coastal Commission review for view-impact or larger additions (6–18 months); administrative CDP (8–14 weeks) is possible for smaller projects. APLA evaluates the permitting path for every Marina del Rey addition project.
Marina del Rey is under the jurisdiction of Los Angeles County (not the City of LA) for most of its unincorporated areas, with CDP processing through LA County Regional Planning rather than LADBS Coastal Division. This distinction affects the permitting timeline and process. APLA navigates both LA County and LADBS CDP processes depending on the specific Marina del Rey property.
Single room: $98,000–$182,000. Primary suite: $185,000–$325,000. Second story or major addition: $315,000–$585,000+. Marina del Rey addition costs are elevated by Coastal Zone permitting requirements, LA County (rather than LADBS) CDP processing, and the premium material standards expected at Marina home values.
Yes. Marina del Rey is fully within the California Coastal Zone. All structural room additions require a CDP. Most additions qualify for administrative CDP (8–14 weeks) rather than Coastal Commission review. APLA evaluates the specific permitting pathway for every project.
Single room: 7–12 months (including Coastal Zone permitting). Primary suite: 10–17 months. Second story or major addition: 14–24+ months (longer if Coastal Commission review required).
Yes. APLA (CA Lic #1136359) handles room additions in Marina del Rey, including Coastal Zone and LA County CDP permitting. Call (818) 818-4419 for a free consultation.
Call: (818) 818-4419
Email: info@aplaconstruction.com
CA General Contractor License #1136359
General Contractor Marina del Rey | ADU Contractor Marina del Rey | Room Addition Los Angeles