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. specializes in building sustainable, high-efficiency Accessory Dwelling Units (ADUs) across Los Angeles to maximize your property's value. Our eco-friendly ADU solutions help Southern California homeowners combat housing shortages while reducing their carbon footprint through innovative green building practices.
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Climate & Environmental Considerations
"Los Angeles construction must address intense UV exposure, seismic activity, and drought conditions. We prioritize fire-resistant materials, cool roofs to combat the urban heat island effect, and greywater recycling systems to ensure long-term resilience and sustainability in the Southern California climate."
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Local Market Pricing (2026)
Service Component
Avg. Market Cost
Green Premium
Garage Conversion ADU
$95,000 - $150,000
+10-15%
Detached New Construction ADU
$200,000 - $400,000
+12-18%
Attached ADU Addition
$160,000 - $300,000
+10-20%
* Estimates are based on AI market analysis for Los Angeles and may vary based on specific site conditions.
Frequently Asked Questions
In Los Angeles, the ADU construction process generally spans 9 to 15 months. This timeframe covers design, the City's permitting phase, and physical construction. Custom Green Construction Inc. accelerates this by managing all municipal approvals and utilizing sustainable building practices to ensure timely delivery of your eco-friendly living space.
Green ADUs in Southern California offer significant energy savings through solar integration and high-performance insulation, lowering utility bills in the LA heat. Beyond environmental benefits, sustainable materials improve indoor air quality and increase property resale value while meeting or exceeding California's strict Title 24 energy efficiency requirements.
Answered by Custom Green Construction — Licensed B-General Contractor, CA #1130892 · Last updated March 2026