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. is bringing sustainable building practices to Los Angeles, Southern California. We specialize in eco-friendly construction and renovation, helping homeowners and businesses reduce their environmental impact while increasing property value.
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Climate & Environmental Considerations
"Los Angeles' Mediterranean climate presents unique challenges and opportunities for rainwater harvesting. Long dry periods necessitate sufficient storage capacity, while infrequent but intense rainfall events require robust filtration and overflow mechanisms to prevent damage and maximize water capture."
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Local Market Pricing (2026)
Service Component
Avg. Market Cost
Green Premium
Rainwater Harvesting Systems
$3,000 - $8,000
10-20%
* Estimates are based on AI market analysis for Los Angeles and may vary based on specific site conditions.
Frequently Asked Questions
The amount of water you save depends on your roof size, rainfall patterns, and water usage. Los Angeles averages about 15 inches of rain per year. A 1,000-square-foot roof could potentially collect over 9,000 gallons annually. Using this water for irrigation and toilet flushing can significantly reduce your municipal water consumption and lower your water bills.
Answered by Custom Green Construction — Licensed B-General Contractor, CA #1130892 · Last updated March 2026