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 high-efficiency rainwater harvesting systems designed to combat Southern California's persistent drought conditions while lowering utility costs. Our expert team integrates sustainable water management solutions into Los Angeles homes to enhance landscape resilience and ensure long-term environmental stewardship.
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Climate & Environmental Considerations
"Los Angeles faces extreme seasonal precipitation variability, characterized by long dry spells followed by intense, short-duration storm events. Construction must account for rapid runoff management and high-capacity storage to maximize collection during atmospheric rivers while preventing soil erosion and foundation issues in clay-rich soils."
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Local Market Pricing (2026)
Service Component
Avg. Market Cost
Green Premium
Rain Barrel Installation
$500 - $1,500
$100 - $300
Underground Cistern System
$5,000 - $12,000
$1,500 - $3,500
Filtration & Distribution
$2,000 - $4,500
$800 - $1,500
* Estimates are based on AI market analysis for Los Angeles and may vary based on specific site conditions.
Frequently Asked Questions
Yes, rainwater harvesting is legal and encouraged in Los Angeles under the California Rainwater Capture Act of 2012. Residents can capture rain from rooftops for non-potable uses like landscaping. Custom Green Construction Inc. ensures all installations comply with local building codes and vector control requirements to prevent mosquito breeding.
In Los Angeles, a 1,000-square-foot roof can collect approximately 600 gallons of water for every inch of rainfall. Even with limited annual rain, a professionally installed system by Custom Green Construction Inc. can offset up to 50% of outdoor irrigation needs, significantly reducing your monthly Los Angeles Department of Water and Power bill.
Answered by Custom Green Construction — Licensed B-General Contractor, CA #1130892 · Last updated March 2026