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 sustainable Accessory Dwelling Units (ADUs) across Los Angeles to meet the city's growing demand for eco-friendly housing. Our expert team integrates energy-efficient designs and recycled materials to build high-quality backhouse solutions that reduce your carbon footprint while increasing property value.
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Climate & Environmental Considerations
"Los Angeles construction must account for extreme heat and seismic activity. We prioritize high-R-value insulation and cool roof technologies to mitigate the urban heat island effect, alongside drought-resistant landscaping and graywater systems to address Southern California's persistent water scarcity challenges while ensuring structural resilience."
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Local Market Pricing (2026)
Service Component
Avg. Market Cost
Green Premium
Garage Conversion ADU
$120,000 - $180,000
$10,000 - $20,000
Detached New Construction ADU
$250,000 - $450,000
$25,000 - $45,000
Attached ADU Addition
$180,000 - $300,000
$15,000 - $30,000
* Estimates are based on AI market analysis for Los Angeles and may vary based on specific site conditions.
Frequently Asked Questions
In Los Angeles, a green ADU typically costs between $150,000 and $450,000 depending on size and materials. While sustainable options like solar panels or recycled insulation add a 10-15% premium, they significantly reduce long-term utility bills and improve indoor air quality, making the investment highly cost-effective for California homeowners.
Yes, according to California's Title 24 building standards, all newly constructed detached ADUs in Los Angeles must include solar panels. This requirement helps offset the unit's energy consumption. Custom Green Construction Inc. ensures your project meets these state mandates while maximizing energy efficiency through passive design and high-performance building envelopes.
Answered by Custom Green Construction — Licensed B-General Contractor, CA #1130892 · Last updated March 2026