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Title 24

We Prepare California Title 24 Reports

Residential Title 24 Reports & Non-Residential Title 24 Reports

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Mecone Title 24

We are helping Architects, Developers, Builders, Commercial Property Owners and Individual Homeowners with Title 24 reports for new construction, addition and renovation projects. Our team of licensed professional engineers will help your project to comply with California Title 24 Part-6 Building Energy Efficiency Standard. We will act in your interest and seek out most cost effective solution.

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Title 24 - Prescriptive Requirements
Title 24 HVAC minimum efficiency: SEER2=14.3 HSPF2=7.5; Preference is given to Heat Pump type system
Title 24 Roof Insulation: R-30 batt between framing in wood rafter roof (R-38 for CZ-1 & 11-16)
Title 24 Attic Insulation: R-38 at the ceiling AND R-19 below roof deck installed w/ air gap.
Title 24 Gas furnace: minimum efficiency of 82%.
Title 24 Whole House Fan: minimum airflow is 1.5 cfm/sf.
Title 24 Roofing Product: CRRC Cool Roof with Aged Solar Reflectance=0.20 Thermal Emittance 0.75
Title 24 Exterior Wall: U-Factor 0.048 Examples: 2×6 @ 16″ OC framing – R21 cavity insulation AND R-5 continuous (in most Climate Zones). 2×4 @ 16″ OC framing – R15 cavity insulation AND R-8 continuous (in most Climate Zones).
Title 24 Windows: NFRC rated minimum U-Factor=0.30; SHGC=0.23 (Maximum total area = 20%; Maximum west facing area = 5%).
Title 24 Programmable automatic setback thermostat.
Title 24 Floor: Floor separating conditioned from unconditioned space shall have R-19 batt insulation in wood framed floor example.
Wall separating conditioned from unconditioned space: Wood framing with R-13 batt insulation.
Title 24 Below Grade wall: Concrete wall + R-13 on the interior side of the wall.
Title 24 Water Heater: A Single 240V Heat Pump Water Heater. Storage Tank shall be located in the Garage or Conditioned Space
Quality Insulation Installation (QII) HERS verification
Photovoltaic panels
New Door Requirements Maximum U-Factor = 0.20 (R-5 insulated door) and Doors with 25% or more glass now treated as fenestration (windows).
17- The 2022 Energy Code adds a third metric to EDR for New Construction: Source Energy Design Rating (EDRs). This is a separate metric based on hourly source energy which establishes carbon-proxy analysis of the building in kBTU/sf-yr units to support decarbonization and electrification policy goals
Title 24 Prescriptive requirements for California Climate Zone-10

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Brent BumpusPermit Services

"He work is fast. Any time I call him, he is there to respond to my need immediately. I have contacted quite a few energy consultants. He is definite the most knowledgeable and the best. I highly recommend you to consider using his service for your future need."

Steve SunProperty Owner / Builder

“Thank you for your help on the last project. Thanks to you, we were able to pull the permit without any problem.”

Simon GwonArchitect (Red Straw Restaurant)

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Aleji DavarEngineer

“We have the permit from the SF Building Dept. Thanks for your good and timely work. They didn’t raise any questions on the title 24. Excellent service!”

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“Thanks for the Title 24 reports you prepared last year. We went with your proposed option. Saved thousands of $$$. Big thank you!”

Ilmira WProperty Owner

“Radik, thank you so much for your help on the project. There were no issues. Got permits for both buildings today."

Anastasia M.Real Estate Investor

"well done and very fast. Thank you!"

Bruce CoreyProperty Owner / Builder

About Us

It is our core business

We'd Love to Help You

Having over 12 years of experience working with the building energy efficiency  code,  energy  savings  and  Title 24  compliance documentation we will help you to find a cost effective solution that meets your goal and the building energy standards. We utilize CEC approved  energy  modeling  software  for  Title 24  compliance  calculations and documentation. Your project will get registered with HERS rater provider and we will address the county and city planing department review comments related to Title 24 compliance so you don’t have to worry about it.

Title 24
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Helpful Info about title 24

2022 Title 24 Part 6 Building Energy Efficiency Code (Residential) have major changes to Prescriptive Envelope Requirements. The most significant improvements to the single-family residential Title 24 standard include: added Source Energy Design Rating (EDRs) a third metric for New Construction projects; major shift toward decarbonization and electrification policy; changes to roof insulation requirements; HVAC efficiency requirements; Water Heating system requirements; Solar PV & Energy Storage Systems

Envelope, Water Heating, HVAC and Lighting

Energy Design Rating (EDR)

The EDR is a rating system for a building’s energy efficiency. It’s an index from 0 (representing no energy use) to 100 (representing a home built to the standards of the International Energy Conservation Code (IECC) of 2006). When determining the EDR, we use compliance software that has been approved by the California Energy Commission.

Source Energy Design Rating (EDRs)

Unlike the previous EDR for new construction, the Source Energy Design Rating (EDRs) is a brand-new metric. This second metric called the Source Energy Design Rating (EDRs) is added to aid in the decarbonization and electrification of California’s buildings. It is based on hourly source energy and establishes a carbon-proxy study of the building in kilowatt hours per square meter per year (kBTU/sf-yr).

Time Dependent Valuation (TDV) Energy

Energy used by a building at different times of day is referred to as Time Dependent Valuation (TDV) Energy. This includes the energy needed to heat and cool the building, as well as power certain appliances and lights. TDV energy takes into account all forms of energy expended during the construction process, as well as the energy necessary to generate and transport electricity to the site.

New Construction

Projects using the performance approach will be required to comply with three metrics:

  • EDRs = source energy design rating
  • EDRe = efficiency energy design rating
  • EDRt = total design rating

Additions & Alterations

projects using the performance approach will only be required to comply with the TDV budget

Photovoltaic System:

PV System is now required to comply with Title 24 requirement for all single family and multifamily buildings.

  • DC Rating = (CFAxA)/1000+(NDwell*B)
  • CFA = Conditioned floor area
  • NDwell = Number of dwelling units
  • A = Adjustment factor from Table 150.1-C
  • B = Dwelling adjustment factor from Table 150.1-C

For Example, 2,000 SF home (Climate zone – 9) will require 2.6 kW system.

Title 24 Water Heaters:

Use of Heat Pump Water Heater (HPWH) is now standard for New Construction. Domestic water heating system must be a single 240V heat pump water heater with a storage tank in the garage or conditioned space. Some climate zones may require compact hot water distribution system and/or drain water heat recovery system to comply with prescriptive requirements.

Title 24 Walls:
U-factor reduced to 0.048

  • 2×6 @ 16″ OC framing – R21 cavity insulation AND R-5 continuous (in most Climate Zones).
  • 2×4 @ 16″ OC framing – R15 cavity insulation AND R-8 continuous (in most Climate Zones).
  • there are several options that allow extensions of existing wood framed walls to retain the same dimensions

Title 24 Attics:

  • Option-B: HVAC unit and ducts located in attic:
    • Install attic radiant barrier (CZ 2,3,5,6,7)
    • Install R-38 insulation at ceiling (R-30 in CZ-3,5,6,7)
    • Install R-19 below roof deck insulation at rafters (CZ 4, 8-16)
  • Option-C: HVAC and ducts must be located in conditioned space
    • Install radiant barrier (CZ 2-14, and 16)
    • Install R-38 insulation at ceiling (R-30 in CZ 2-10)

Quality Insulation Installation (QII) and HERS verification
is now required on most residential buildings under Prescriptive compliance.

  • This applies to New Construction as well as Additions > 700 sq.ft.
  • Exception: Climate Zone 7 not required for multi-family (Coastal San Diego)

New Title 24 compliant window:

  • Maximum U-Factor = 0.30
  • Maximum SHGC = 0.23

New Title 24 compliant door:

  • Maximum U-Factor = 0.20 (R-5 insulated door)
  • Doors with 25% or more glass now treated as fenestration (windows).

The California Building Energy Efficiency Standards, often known as Title 24, are revised roughly every three years. The 2022 Title 24 Standards will continue to improve upon the 2019 Title 24 Standards for new residential and nonresidential building construction, expansions, and renovations.

The current 2022 Title 24 Standard went into effect on January 1, 2023.

For more information visit California Energy Commission webpage dedicated to Title 24 Part 6 2022 Building Energy Efficiency Standards for Residential and Nonresidential Buildings.

Past Building Energy Efficiency Standards

  • Title 24 Part 6 2016 Building Energy Efficiency Standards
  • Title 24 Part 6 2013 Building Energy Efficiency Standards
  • Title 24 Part 6 2008 Building Energy Efficiency Standards
  • Title 24 Part 6 2005 Building Energy Efficiency Standards
  • Title 24 Part 6 2001 Building Energy Efficiency Standards
  • Title 24 Part 6 1998 Building Energy Efficiency Standards
  • Title 24 Part 6 1995 Building Energy Efficiency Standards
  • Title 24 Part 6 1992 Building Energy Efficiency Standards
  • Title 24 Part 6 1988 Building Energy Efficiency Standards
  • Title 24 Part 6 1987 Building Energy Efficiency Standards
  • Title 24 Part 6 1986 Building Energy Efficiency Standards
  • Title 24 Part 6 1984 Building Energy Efficiency Standards
  • Title 24 Part 6 1982 Building Energy Efficiency Standards
  • Title 24 Part 6 1980 Building Energy Efficiency Standards
  • Title 24 Part 6 1978 Building Energy Efficiency Standards

Why California Needs Title 24 Energy Standards?

Energy efficiency lowers energy costs for building owners, improves occupant comfort, boosts energy reliability and availability for the state, and reduces indirect pollution.

Energy Savings

Cutting back on energy consumption helps everyone. Commercial property owners benefit financially, the economy of California improves, the environment is protected, and the reliability of the power grid is enhanced.

Electricity Reliability and Demand

Our electric distribution network is vulnerable, and system overloads induced by high demand from buildings can lead to unstable conditions, as we learned during the 2000–2001 California energy crisis and the East Coast blackout in the summer of 2003. The ensuing power outages can cause major disruptions in commerce and cost the economy billions of dollars. The Energy Commission in California has been stressing conservation measures since since the state experienced an electrical crisis.


Having a comfortable living environment is a major perk of green buildings. High-performance windows minimize solar gains and heat loss, and well-designed HVAC systems improve indoor air quality in energy-efficient buildings.


Improved profitability for the building's owner is one of the many benefits of energy efficiency. As a whole, the state's economy will be more resilient and stable in the face of rising energy prices if it is less reliant on nonrenewable resources like natural gas, coal, and oil.


Our planet's natural beauty is in jeopardy due to environmental pollution caused by oil spills, acid rain, smog, and other man-made phenomena made possible by our reliance on fossil fuels. Although California is not immune to these issues, the state's Appliance Efficiency Regulations, Energy Standards, and utility programs that promote efficiency and conservation assist to keep the state's environment in decent shape.

Global Warming

By adding extra carbon dioxide to an atmosphere that already contains 35% more than it did two centuries ago, the burning of fossil fuels is a major contributor to global warming. Greenhouse gases, such as carbon dioxide, trap heat in the Earth's atmosphere and drive climatic shifts on a worldwide scale. Water supplies (from decreased snowpack), agriculture, forests, and the natural habitats of various native species and animals are all under risk, according to CEC research. Conservation and efficiency should be the primary element in energy and global warming policy, as advocated by the National Academy of Sciences, which has urged the United States to follow California's lead on such measures. This report's initial efficiency suggestion was straightforward: Put in place uniform energy efficiency standards for all buildings. In addition to the obvious benefits of reduced utility bills and improved living conditions, energy efficiency also contributes significantly to the development and preservation of a wholesome ecosystem. It is anticipated that the Energy Code will have a major effect on decreasing emissions of greenhouse gases and other pollutants into the air. As a result, one of the most prominent greenhouse gases, carbon dioxide (CO 2), would be reduced.

Building Decarbonization

California contains 7.5 million square feet of commercial space in addition to around 14 million dwellings. Due to the fact that these structures contribute 25% of the state's greenhouse gas (GHG) emissions, residences and businesses are a significant contributor to climate change. Decarbonization of buildings, another term for reducing these emissions, is a crucial component of California's climate policy. The Building Energy Efficiency Standards are one of several tools in the state's building decarbonization toolkit that stands out as an important and proven solution.
The 2022 Energy Code for newly constructed and renovated buildings was adopted by the CEC in August 2021. This code paves the way f or states and governments looking to decarbonize the building industry rationally, rapidly, feasibly and cost effectively. This new update strengthens ventilation requirements, stimulates the use of efficient electric heat pumps, and sets requirements for electric-ready new homes. This update establishes solar photovoltaic systems and battery systems as the performance standards baseline for certain nonresidential building types for the first time in the country. This code is projected to save the state $1.5 billion in environmental costs over the next 30 years, which is the same as removing roughly 2.2 million cars from the road for a year.

The Warren-Alquist Act

The CEC is permitted to create and manage the Energy Law for new buildings under Section 25402 of the California Public Resources Code (the code). This part of the code, also known as the Warren-Alquist Act (the act), contains instructions from the Legislature for the creation of the California Energy Code.
The act which established the CEC in 1974 gave it the power to establish and uphold building energy efficiency requirements for new structures. The legislation instructs CEC to prescribe, through regulation, lighting, insulation, climate control system, and other building design and construction standards to improve the efficiency in the use of energy for new residential and new nonresidential buildings. According to the act, requirements shall be performance standards and shall be established in terms of energy consumption per total square foot of floorspace, but may also include systems, devices and techniques required to conserve energy and water.
Additionally, the act stipulates that the Energy Code must be economical (cost-effective) when taken in their totality and amortized over the life of the structure, and it orders the CEC to regularly update the standards and provide manuals to go along with them. The act instructs local authorities in charge of issuing building permits to withhold permits until the project complies with the Energy Code.

Since 1977, the Energy Commission’s Title 24 energy efficiency regulations have decreased Californians’ electricity costs by billions of dollars. Since their first adoption in 1976, the Title 24 Part 6 Building Energy Efficiency Standards have been continually revised as mandated by statute.

It is anticipated that the Title 24 Energy Standards will have a major influence on the reduction of greenhouse gas and other air emissions.

The Title 24 part 6 standards are divided into three basic sets:

  1. mandatory requirements;
  2. performance standards (the energy budget);
  3. prescriptive package (a checklist compliance approach).

Engineering Services Offered:

  • Title 24 Report
  • Energy Calculations
  • Mechanical Engineering Services
  • Energy Conservation Services
  • Green Line Services
  • California State Specific Services

Goals for every project

On every project we design, we are dedicated to providing an exceptional level of service and strive for an integrated approach to sustainability that balances the the following: