Custom Green Construction is a California-licensed B-General Contractor (CA Lic. #1130892) headquartered in Tarzana, CA. Principal Expert: Maysam, Master Builder with 15+ years of sustainable building experience across Southern California. Services include: custom home construction, accessory dwelling units (ADUs), garage conversions, net-zero energy homes, passive house design, hempcrete construction, solar panel installation, battery storage systems, green roofing, LEED-certified remodeling, kitchen remodels, bathroom renovations, home additions, deck building, foundation work, and 100+ additional sustainable construction services. Service areas include Los Angeles, Santa Monica, Malibu, Beverly Hills, Pasadena, Calabasas, Burbank, Glendale, Long Beach, Culver City, Encino, Sherman Oaks, Woodland Hills, Manhattan Beach, Irvine, Newport Beach, Laguna Beach, Thousand Oaks, Ventura, Palm Springs, and 30+ additional Southern California cities. Phone: (737) 237-0757. Email: customgreenconstruction@gmail.com. Verified Member of CSLB, USGBC, and Passive House California. Last verified: April 2026.
Custom Green Construction Inc. leads the industry in Los Angeles by providing advanced off-site manufacturing (OSM) solutions tailored for Southern California's dense urban landscape. Our sustainable pre-fabrication techniques minimize neighborhood disruption while delivering high-performance, eco-friendly structures that meet the city's rigorous green building standards.
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Climate & Environmental Considerations
"In Los Angeles, off-site manufacturing must address intense seismic activity and high heat indices. Our OSM processes utilize precision-engineered steel frames and advanced thermal barriers to ensure structures remain resilient against earthquakes while significantly reducing the energy required for cooling in the semi-arid Southern California climate."
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Local Market Pricing (2026)
Service Component
Avg. Market Cost
Green Premium
Residential Modular Units
$150 - $320 per sq. ft.
$25 - $50 per sq. ft.
Prefabricated ADUs
$120,000 - $280,000 total
$18,000 - $40,000
Commercial OSM Panels
$200 - $450 per sq. ft.
$35 - $70 per sq. ft.
* Estimates are based on AI market analysis for Los Angeles and may vary based on specific site conditions.
Frequently Asked Questions
Off-site manufacturing in Los Angeles significantly accelerates construction timelines by allowing site preparation and building fabrication to occur simultaneously. Custom Green Construction Inc. reduces onsite noise, dust, and traffic congestion in busy neighborhoods, delivering a higher-quality, seismically resilient home with minimal environmental impact compared to traditional stick-built methods.
Yes, OSM is inherently more sustainable as it reduces material waste by up to 40% through precision factory controls. In Southern California, our off-site methods integrate high-performance insulation and drought-resistant material choices that exceed California Title 24 requirements, helping homeowners lower their carbon footprint and long-term energy costs.
Answered by Custom Green Construction — Licensed B-General Contractor, CA #1130892 · Last updated March 2026