Title 24 compliance in Los Angeles
Los Angeles is the most active construction market in California, and LADBS — the Los Angeles Department of Building and Safety — is the busiest local plan-check authority in the state. Title24.IO prepares Title 24 Part 6 documentation for every project type LADBS sees: single-family additions in the Hollywood Hills, ADUs in Mar Vista, four-pack courtyard housing in Boyle Heights, ground-up multi-family in Koreatown, tenant improvements in DTLA office towers, and ground-up commercial in the San Fernando Valley.
Los Angeles spans three CEC climate zones, which materially changes prescriptive requirements: the western basin and coastal strip (CZ 6), the inland basin including Downtown and Hollywood (CZ 8), and the San Fernando Valley (CZ 9). We confirm zone from the address before modeling so the report fits the actual climate-zone requirements your envelope and HVAC have to meet.
LADBS plan-check workflow has its own conventions — preferred form versions, signature-block expectations, and how energy is bundled with structural and mechanical sets. Reports prepared without that local context come back with corrections that add weeks to permitting. We deliver permit-ready packages with everything LADBS expects in the order LADBS expects to receive it.
Westside coast (CZ 6), Downtown + inland basin (CZ 8), San Fernando Valley (CZ 9). Confirmed per project address.
Building department + plan-check workflow
Plan check via LADBS online portal. Energy report submitted as a standalone PDF alongside the architectural set.
ladbs.orgWhat we see most in Los Angeles
- Hillside single-family + additions (Hollywood Hills, Silver Lake, Brentwood)
- ADUs and JADUs (citywide, especially Westside + East LA)
- Four-pack and small-lot multi-family (Boyle Heights, Highland Park, Mar Vista)
- Ground-up multi-family (Koreatown, Downtown, Hollywood)
- Commercial tenant improvements (DTLA office, Westside retail)
- Studio + entertainment facility upgrades (Hollywood, North Hollywood)
- Industrial warehouses and last-mile logistics (eastside / South LA)
What Los Angeles reviewers look for
LADBS accepts CF1R-PRF or CF1R-PRS for residential. Performance path is most common for hillside projects with non-prescriptive glazing ratios.
CALGreen (Title 24 Part 11) is reviewed in the same plan-check pass — we include a CALGreen mandatory-measures sheet alongside the energy package.
Solar PV mandate applies to most new low-rise residential. Battery storage is incentivized but not required citywide.
For hillside or wildfire-overlay districts, expect additional envelope notes related to WUI requirements that interact with Title 24 glazing specs.
All Title 24 services available in Los Angeles
Neighborhoods + areas we cover in Los Angeles
Los Angeles-specific questions, answered
Do I need a Title 24 report for an LA ADU?
Yes. Every new ADU in Los Angeles requires a Title 24 energy compliance report submitted with the LADBS permit set, regardless of whether the ADU is detached, attached, or a conversion. The 2022 standards typically allow ADUs to use a simplified compliance pathway when sized under 1,200 SF.
How does LADBS review the energy report?
LADBS reviews the energy report alongside the architectural and mechanical sheets during plan check. The report must be signed by an authorized documentation author and dated within the current standards cycle. Correction items are returned via the LADBS online portal and typically include items related to envelope assumptions, HVAC sizing, or HERS-verified measure documentation.
Which climate zone is my LA project in?
It depends on the address. The Westside and coastal areas (Venice, Santa Monica-adjacent, parts of Mar Vista) are in Climate Zone 6. Downtown, Hollywood, Silver Lake, and most of the inland basin are CZ 8. The San Fernando Valley north of the Sepulveda Pass is CZ 9. We confirm the exact zone before we model.