Title 24

We Prepare California Title 24 Reports

Residential Title 24 Reports & Non-Residential Title 24 Reports

Problem Solving & Creativity

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: 14.0 SEER.
Title 24 Roof Insulation: R-30 batt between framing in wood rafter roof.
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: Tankless water heater with minimum efficiency of 82%.
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).
Title 24 Prescriptive requirements for California Climate Zone-10

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Everett MartinezArchitect

“I'm very happy with your work Radik, and thanks for helping.”

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)

"Thanks for your outstanding work, Radik!"

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!”

Nikos TroullinosHomeowner-Builder

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Ben ParksHead of Operations - Creative Ceilings & Drywall

"I just wanted to say how nice it was to work with Mecone inc. everything was done online and in quick time. Pricing for the project was very fair. I will do business with you in the future."

Kevin BroomBuilder

"You saved my day. You are amazing ! Thank you" Brenda


“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

2019 Title 24 Part 6 Building Energy Efficiency Code (Residential) have major changes to Prescriptive Envelope Requirements. The most significant improvements to the residential Title 24 Standards include improvements for attics, walls, water heating, and lighting:

Envelope, Water Heating, HVAC and Lighting

Energy Design Rating (EDR)

is a way to express the energy consumption of a building. It is a rating score index where 0 (zero) represents a building that has zero energy consumption and 100 represents the energy consumption of the building built to the specifications of the 2006 International Energy Conservation Code (IECC) home. The EDR is calculated using California Energy Commission approved compliance software.

Time Dependent Valuation (TDV) Energy

is the time varying energy use by the building to provide space conditioning and water heating and for specified buildings lighting. TDV energy accounts for the energy used at the building site and consumed in producing and in delivering energy to a site, including, but not limited to, power generation, transmission and distribution losses.

New Construction

projects using the performance approach will be required to comply with both the:

  • Maximum EDR score (includes Heating/Cooling/DHW)
  • Maximum TDV score (includes above and lighting/appliances/receptacle uses/PV)

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 Tankless Water Heater

Title 24 Water Heaters:

Tankless Water Heaters are now standard. Tank type water heaters are considered to be sub-standard solution unless it is a high-efficienty Heat Pump water heater.  Gas tank-type water heaters may require HERS verifications, compact piping design, and increase in PV system capacity.

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-A: 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-B: 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).

California’s Building Energy Efficiency Standards, commonly known as Title 24, are updated on an approximately three-year cycle. The 2022 Title 24 Standards will continue to improve upon the 2019 Title 24 standards for new construction of, and additions and alterations to, residential and nonresidential buildings.

The effective date of the current 2019 Title 24 Standard is January 1, 2020.

Title 24 Part 6 2019 Building Energy Efficiency Standards for Residential and Nonresidential Buildings.

Why California Needs Title 24 Energy Standards?

Energy efficiency reduces energy costs for owners, increases reliability and availability of electricity for the State, improves building occupant comfort, and reduces environmental impact.

Energy Savings

Reducing energy use is a benefit to all. Building owners save money, Californians have a more secure and healthy economy, the environment is less negatively impacted, electrical grid can operate in a more stable state.

Electricity Reliability and Demand

We learned during the 2000/2001 California energy crisis, and the East Coast blackout in the summer of 2003, that our electric distribution network is fragile and system overloads caused by excessive demand from buildings can create unstable conditions. Resulting blackouts can disrupt business and cost the economy billions of dollars. Since the California electricity crisis, the Energy Commission has placed more emphasis on demand reduction.


Comfort is an important benefit of energy efficient buildings. Energy efficient buildings include high performance windows to reduce solar gains and heat loss, and properly designed HVAC systems, which provide improved air circulation.


For the building owner, energy efficiency helps create a more profitable operation. From a broader perspective, the less California depends on depletable resources such as natural gas, coal, and oil, the stronger and more stable the economy will remain in the face of energy cost increases.


The use of depletable energy has led to oil spills, acid rain, smog, and other forms of environmental pollution that threaten the natural beauty of our planet. California is not immune to these problems, but the Appliance Efficiency Regulations, the Energy Standards, and utility programs that promote efficiency and conservation help to maintain environmental quality.

The Title 24 Energy Standards are expected to have a significant impact on reducing greenhouse gas and other air emissions.

Source: 2016 Title 24 Residential and Nonresidential Compliance Manuals by California Energy Commission.

The Energy Commission’s Title 24 energy efficiency standards have saved Californians billions in reduced electricity bills since 1977. The Title 24 Part 6 Building Energy Efficiency Standards were first adopted in 1976 and have been updated periodically since then as directed by statute.

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

  1. a basic set of mandatory requirements;
  2. a set of performance standards (the energy budgets which vary by climate zone);
  3. an alternative to the performance standards, which is a set of prescriptive packages that are basically a recipe or 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: