TITLE 24 COMPLY
TODAY

California Title 24, Part 6 is the state's Building Energy Efficiency Standards — a mandatory set of requirements that govern how much energy new and altered residential buildings are permitted to consume. Before any local building department issues a construction permit, the project must demonstrate compliance through an energy compliance report prepared with state-approved software.

The report documents the energy performance of every major building system — walls, roof, windows, HVAC, water heater, and lighting — and confirms the design meets California's current energy code. Without it, a building permit cannot be issued.

The CF1R (Certificate of Compliance — Residential) is the Title 24 energy compliance document required for single-family residential projects. It must be generated using CEC-approved software and registered through CHEERS before permit submission. It is required for:

• New single-family homes
• Accessory Dwelling Units (ADUs) — detached, attached, and garage conversions
• Junior ADUs (JADUs)
• Room additions that create new conditioned square footage
• Remodels that alter the building envelope or mechanical systems

The LMCC (Low-Rise Multifamily Compliance Certificate) is the Title 24 energy compliance document for low-rise multifamily residential buildings — any attached multi-unit structure up to three stories. It uses a compliance methodology specifically designed for multi-unit buildings, accounting for shared walls, per-unit mechanical systems, and common areas. It applies to:

• Duplexes (2 units)
• Triplexes (3 units)
• Fourplexes (4 units)
• Townhomes with shared walls or floors
• Low-rise apartment buildings up to 3 stories

A Title 24 report is required whenever a California building permit is needed for residential construction or alteration. This includes:

• New homes — all new single-family construction statewide
• ADUs & JADUs — detached, attached, garage conversions, and junior ADUs
• Room additions — any new conditioned square footage added to an existing home
• Major remodels — projects that alter the building envelope, replace windows, or change mechanical systems
• Duplexes — all new two-unit residential buildings
• Triplexes & fourplexes — new construction of 3- and 4-unit buildings
• Multifamily developments — any low-rise multi-unit residential project requiring a permit

Not sure if your project qualifies? Contact us and we'll confirm.

To prepare your report accurately, submit your architectural documentation. Include as many of the following as available:

• Floor plans — room layout, dimensions, and conditioned area
• Elevations — exterior wall heights and window placement
• Window schedule — sizes, U-factor, and SHGC values if specified
• Wall & roof sections — assembly details and insulation types
• HVAC information — equipment type, fuel source, and efficiency rating (if selected)
• Water heater information — type and fuel source (if selected)
• Solar PV details — system size and orientation (if applicable)

Preliminary plans are accepted — we update the report as final specs are confirmed.

Title 24 compliance is calculated based on the combined energy performance of your building's components. These factors directly influence the outcome:

• Square footage — affects baseline energy budgets and compliance thresholds
• Windows & glazing — U-factor and SHGC values affect heat loss and cooling loads
• Insulation — wall, roof, and floor R-values determine thermal performance
• HVAC systems — efficiency ratings (SEER2, HSPF2) and duct insulation levels
• Water heating — system type and energy factor
• Lighting — indoor lighting power density and high-efficacy requirements
• Solar PV — on-site generation can offset energy use in applicable climate zones

Once your order is placed and plans received, here's the full workflow:

• Plan review — we examine your documents to identify all energy-related components
• Climate zone identification — your address is used to assign the correct Title 24 climate zone
• Energy modeling — your project is modeled in CEC-approved compliance software
• Report preparation — the CF1R or LMCC is generated and reviewed for accuracy
• Statewide HERS filing — the report is filed in California's statewide energy compliance registry
• PDF delivery — your completed, stamped report is emailed to you — permit-ready

Standard delivery: 2–3 business days. Rush available.

Standard delivery is 2–3 business days from the time we receive your complete plans. Once your order is placed and plans are submitted, our team begins the energy analysis and prepares your CF1R or LMCC within that window.

Yes. Rush 24-hour delivery is available as an add-on at checkout. For projects with extremely tight deadlines — requiring delivery within a few hours — please contact us directly before placing your order so we can confirm availability and discuss expedited options.

Yes. We prepare Title 24 reports for projects in all 16 California climate zones — from the coastal zones of San Diego, Los Angeles, and the Bay Area, to the hot inland valleys of the Central Valley, to the mountain and desert regions of Zones 14, 15, and 16. Your project address determines the applicable climate zone, and our calculations are tailored to its specific requirements.

Yes. Our CF1R and LMCC reports are generated using California Energy Commission-approved Title 24 compliance software and registered through the CHEERS statewide database — the two requirements that make a Title 24 report acceptable to any local building department in California. Reports prepared this way are accepted statewide across all 16 climate zones.

CHEERS (California Home Energy Rating System) is the statewide energy compliance registry administered by the California Energy Commission. All Title 24 compliance reports must be filed in CHEERS before a local building department will accept them. Filing confirms the report was prepared by a qualified consultant using CEC-approved software, and it is included with every order at no additional cost.

Preliminary plans are accepted. We can begin the energy analysis with early-stage drawings and update the report once final specifications — such as the window schedule, HVAC equipment, and insulation values — are confirmed. This is common practice and does not affect the quality or the final CHEERS filing of the completed report.

Every report includes one free revision. If your plans are revised during the permit process — whether due to a design change, an updated window schedule, or a different HVAC system — we will update the report to reflect the revised documents at no additional charge for the first revision.

Yes. All ADUs in California — detached, attached, and junior ADUs (JADUs) — require a Title 24 CF1R report before a building permit can be issued. There is no size exemption. Even a studio ADU under 300 square feet requires a compliant CF1R registered in CHEERS.

Yes. Converting a garage into conditioned living space — whether as an ADU, JADU, or living area addition — creates new conditioned square footage and triggers Title 24 compliance requirements. A CF1R report is required before the building department will issue a permit for the conversion.

It depends on the compliance path selected during energy modeling. Some Title 24 compliance approaches require post-construction field verification by a HERS rater — for example, to verify duct leakage, refrigerant charge, or insulation installation quality. The CF1R or LMCC we prepare is the design-stage compliance document. Your contractor or local building department can advise whether your project also requires HERS verification after construction.

Both are California Title 24 Part 6 energy compliance documents, but they apply to different building types. The CF1R is used for single-family homes, ADUs, and JADUs. The LMCC is used for low-rise multifamily buildings — any attached structure with two or more residential units up to three stories, including duplexes, triplexes, fourplexes, and small apartment buildings. The LMCC uses a different compliance methodology that accounts for shared walls, per-unit mechanical systems, and common area energy use.

Every report includes one free revision. If your building department returns a plan-check comment requesting a change to the energy compliance documentation — a specification update, a recalculation, or a formatting correction — email us the comment and we will update the report at no additional charge. Timely responses to plan-check comments help keep your permit process on schedule.