Title 24 Reports and Energy Calculations for Fontana
Title 24 Calcs prepares permit-ready Title 24 energy reports for Fontana. We cover new homes, ADUs, granny flats, room additions, remodels, and commercial projects. Most residential reports ship within 1 to 2 business days. Fontana is part of our full California cities service area.
Fontana is one of the Inland Empire's largest cities. It is a major hub for logistics, distribution, and industrial permits. Fontana is one of the most active warehouse permit markets in San Bernardino County. At the same time, established residential neighborhoods generate consistent residential Title 24 permit demand.
Fontana Title 24 — key facts:
• Provider: Title 24 Calcs prepares CF1R energy compliance reports for Fontana
• Climate zone: Zone 10 — hot inland San Bernardino County
• Building department: City of Fontana Building and Safety Division
• Address: 8353 Sierra Avenue, Fontana, CA 92335
• Phone: (909) 350-7610 | Portal: City of Fontana online permit portal
• 2025 code: In effect for all Fontana permits submitted on or after January 1, 2026
• Starting price: $250 for eligible residential projects
• Turnaround: 1 to 2 business days for most residential reports
Fontana Title 24 Climate Zone 10
Fontana is in Climate Zone 10. This is one of California's most demanding energy compliance zones. Summer temperatures regularly exceed 100°F near the San Bernardino Valley. Zone 10 homes need ceiling insulation, HVAC sizing, and solar PV systems that are more demanding than coastal California projects. Duct leakage testing is especially important in Fontana's hot climate.
Fontana's permit activity spans two sectors. Residential projects include new homes, ADUs, and room additions. Industrial and warehouse projects include large-scale distribution facilities and logistics centers. Each requires different Title 24 forms. Residential projects use the CF1R package. Warehouse projects use NRCC-ENV and NRCC-MCH commercial forms. We handle both.
We confirm your exact climate zone by project address before starting any report. The California Energy Commission climate zone tool provides the official zone map. You can also view our full California Title 24 climate zones guide for zone-by-zone details.
We also serve nearby cities: Rancho Cucamonga • Ontario • San Bernardino • Rialto • Corona • Riverside. See our San Bernardino County page or the full cities index for all locations we cover.
CF1R Reports and HERS Testing in Fontana
City of Fontana Building and Safety Division requires a CF1R Certificate of Compliance for all residential permits that trigger Title 24. Title 24 Calcs prepares the CF1R using current CEC-approved software. The software uses the 2025 code. We register it with an approved HERS provider before delivery. As a result, it is ready for permit submittal.
| CF1RCertificate of Compliance — submitted with the Fontana permit application | CF2RCertificate of Installation — signed by the installing contractor in the field | CF3RCertificate of Verification — signed by a HERS Rater before Fontana final inspection |
HERS testing is mandatory for specific energy systems. A certified HERS Rater must verify duct leakage, heat pump refrigerant charge, ventilation flow rates, and battery readiness. This verification is required before issuing a certificate of occupancy. Your CF1R identifies all applicable HERS measures for your Fontana project.
Title 24 Services for Fontana Projects
New Home Construction in Fontana
New single-family homes in Fontana need a Title 24 new construction report for every permit submitted on or after January 1, 2026. Heat pumps are the prescriptive baseline for space and water heating. Solar PV and battery readiness provisions also apply to most new homes. We prepare the complete CF1R package. We register it and deliver it ready for permit submittal. See our residential new construction service page for full details.
Title 24 ADU, Granny Flat, and In-Law Unit Reports in Fontana
Fontana's established residential neighborhoods have seen strong ADU permit activity. The city's large residential lots in older neighborhoods make garage conversions and detached ADUs common project types. A Title 24 ADU report is required for every new ADU, JADU, granny flat, or in-law unit submitted on or after January 1, 2026. The compliance path depends on how the project is classified. Title 24 Calcs confirms the correct classification before starting your report. See our ADU Title 24 service page for more information.
Room Additions and Alterations in Fontana
Room additions that add conditioned floor area trigger Title 24 compliance. All new walls must meet Zone 10 insulation values. Ceilings and windows must also meet Zone 10 fenestration requirements. Additionally, HVAC replacement, window replacement, and water heater replacement may trigger a report. See our room addition service page and alteration service page for details. If you are unsure whether your Fontana project needs a report, submit your project details and we will confirm before you pay.
Title 24 Compliance for Fontana Remodels
Common triggers for Title 24 alteration reports in Fontana include HVAC replacement and window replacement to meet Zone 10 U-factor minimums. Heat pump water heater installation and significant lighting changes also trigger reports. These scopes of work require energy compliance documentation at plan check submittal.
Commercial Title 24 Reports in Fontana
Fontana's warehouse and logistics sector is one of the Inland Empire's most active commercial permit markets. Large distribution centers along the I-10 and I-15 corridors require NRCC-ENV and NRCC-MCH forms. We handle Zone 10 high-bay warehouse compliance requirements. We prepare NRCC-ENV, NRCC-MCH, and NRCC-LTI forms for all nonresidential project types throughout Fontana. The 2025 code requires solar PV for most new nonresidential buildings. It also requires ASHRAE Guideline 36 controls for VAV systems.
Frequently Asked Questions — Title 24 Fontana
Which building department handles permits in Fontana?
City of Fontana Building and Safety Division at 8353 Sierra Avenue, Fontana, CA 92335. Phone: (909) 350-7610. Permits submit through the City of Fontana online permit portal. Title 24 energy compliance documentation must accompany the permit application at the time of permit submittal.
What Title 24 climate zone is Fontana in?
Fontana is in Climate Zone 10. This is a hot inland San Bernardino County climate. Zone 10 has specific insulation, window performance, HVAC efficiency, and solar PV requirements. We confirm your exact zone by project address before starting any report.
What is HERS testing and is it required in Fontana?
HERS testing is third-party field verification of energy systems. In Fontana, a certified HERS Rater must verify duct leakage, heat pump refrigerant charge, and ventilation flow rates. This is required before the building department issues your certificate of occupancy. Your CF1R identifies the applicable measures.
Do I need a Title 24 report for an ADU in Fontana?
Yes. All new ADUs, JADUs, granny flats, and in-law units submitted on or after January 1, 2026 require a Title 24 report in Fontana. Title 24 Calcs confirms the correct compliance path before starting your report.
How much does a Title 24 energy report cost in Fontana?
Pricing starts at $250 for eligible residential projects. All pricing includes HERS registration, plan-sized PDFs, and revision support. See our pricing page for current rates.
How long does it take to get a Title 24 energy report in Fontana?
Most residential reports for Fontana projects are delivered within 1 to 2 business days after we receive complete plans. Commercial reports typically take 2 to 3 business days. Rush options are available for urgent submittals.