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 to ensure Los Angeles homes meet California's stringent Title 24 energy efficiency standards. Our certified raters help homeowners and builders across Southern California optimize building performance while reducing long-term utility costs and environmental impact.
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Climate & Environmental Considerations
"In Los Angeles, high temperatures and urban heat island effects necessitate highly efficient HVAC systems and superior insulation. HERS ratings are critical here to verify that cooling systems perform optimally during extreme heatwaves, reducing the strain on the regional power grid and lowering indoor temperatures naturally."
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Local Market Pricing (2026)
Service Component
Avg. Market Cost
Green Premium
Residential HERS Inspection
$350 - $600
Included
Duct Leakage Testing
$250 - $450
N/A
Whole House Energy Audit
$500 - $1,200
+$150 for Infrared
* Estimates are based on AI market analysis for Los Angeles and may vary based on specific site conditions.
Frequently Asked Questions
A Home Energy Rating System (HERS) rating is a professional evaluation of a home's energy performance. In Los Angeles, HERS ratings are often required by California Title 24 regulations to verify that newly installed HVAC systems, insulation, and windows meet state efficiency standards, ensuring lower bills and environmental compliance.
Most HERS inspections in the Los Angeles area take between 1.5 to 3 hours, depending on the size of the property and the specific systems being tested. Our certified raters perform duct leakage tests, refrigerant charge verifications, and airflow measurements to provide the necessary documentation for your building permit finalization.
Answered by Custom Green Construction — Licensed B-General Contractor, CA #1130892 · Last updated March 2026