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. provides expert HERS Rating Services across Los Angeles to ensure your property complies with California's strict Title 24 energy efficiency mandates. Our certified raters specialize in optimizing Southern California homes for peak performance, reducing environmental impact while lowering long-term utility expenses.
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Climate & Environmental Considerations
"In the diverse microclimates of Los Angeles, from the San Fernando Valley heat to coastal humidity, HERS raters must prioritize HVAC efficiency and thermal envelope integrity to combat the Urban Heat Island effect and rising seasonal temperatures."
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Local Market Pricing (2026)
Service Component
Avg. Market Cost
Green Premium
Duct Leakage Testing
$300 - $450
$50 for Aeroseal consultation
Whole Home Energy Audit
$600 - $1,250
Included with net-zero consulting
Refrigerant Charge Verification
$250 - $400
N/A
* Estimates are based on AI market analysis for Los Angeles and may vary based on specific site conditions.
Frequently Asked Questions
A HERS rating is legally required in Los Angeles to comply with California Title 24 Building Energy Efficiency Standards. It verifies that your home's energy-intensive systems, like HVAC and insulation, operate efficiently. This process ensures legal compliance, improves indoor air quality, and significantly reduces monthly energy bills for Southern California residents.
For green construction projects, a HERS rating provides an objective roadmap to sustainability by identifying energy leaks and system inefficiencies. Custom Green Construction Inc. uses these ratings to validate high-performance building techniques, ensuring your Los Angeles home achieves maximum energy savings and a smaller carbon footprint through data-driven verification.
Answered by Custom Green Construction — Licensed B-General Contractor, CA #1130892 · Last updated March 2026