Title 24 Reports and Energy Calculations for Rancho Cucamonga
Title 24 Calcs prepares permit-ready Title 24 energy reports for Rancho Cucamonga. We cover new homes, ADUs, granny flats, room additions, remodels, and commercial projects. Most residential reports ship within 1 to 2 business days. Rancho Cucamonga is part of our full California cities service area.
Rancho Cucamonga is one of San Bernardino County’s most affluent communities. It is a consistently active permit market. The hillside communities of Etiwanda Estates, Day Creek, and Deer Creek generate high-value residential permit activity. Victoria Gardens and its surrounding corridor produce consistent commercial permit volume. Additionally, proximity to Ontario International Airport drives logistics and office permit activity in the west end of the city.
Rancho Cucamonga Title 24 — key facts: • Provider: Title 24 Calcs prepares CF1R energy compliance reports for Rancho Cucamonga • Climate zone: Zone 10 — hot inland San Bernardino County at the base of the San Gabriel Mountains • Building department: City of Rancho Cucamonga Building and Safety Services Division • Address: 10500 Civic Center Drive, Rancho Cucamonga, CA 91730 • Phone: (909) 477-2710 | Portal: City of Rancho Cucamonga online permit portal • 2025 code: In effect for all Rancho Cucamonga 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
Rancho Cucamonga Title 24 Climate Zone 10
Rancho Cucamonga sits in Climate Zone 10 at the base of the San Gabriel Mountains. The city’s higher elevation means slightly cooler evenings than other Zone 10 cities. However, peak summer temperatures still regularly exceed 95°F. Zone 10 demands higher insulation, more efficient HVAC, and larger solar PV than coastal zones. We confirm your exact zone by parcel address before starting any report.
Rancho Cucamonga’s Building and Safety Services Division requires Title 24 energy documentation at the time of plan check submittal. Reports must use current CEC-approved software updated to the 2025 code. Reports prepared under the 2022 code are not valid for permits submitted after January 1, 2026. We prepare all Rancho Cucamonga reports using 2025-code software.
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: Ontario • Fontana • Corona • San Bernardino • Upland • Riverside. See our San Bernardino County page or the full cities index for all locations we cover.
CF1R Reports and HERS Testing in Rancho Cucamonga
City of Rancho Cucamonga Building and Safety Services 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 is updated to 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 Rancho Cucamonga permit application | CF2RCertificate of Installation — signed by the installing contractor in the field | CF3RCertificate of Verification — signed by a HERS Rater before Rancho Cucamonga 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 the city issues your certificate of occupancy. Your CF1R identifies all applicable HERS measures for your Rancho Cucamonga project.
Title 24 Services for Rancho Cucamonga Projects
New Home Construction in Rancho Cucamonga
New single-family homes in Rancho Cucamonga 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. It is registered and 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 Rancho Cucamonga
Rancho Cucamonga’s large-lot communities in Etiwanda, Day Creek, and Deer Creek have seen growing ADU permit activity. These high-value neighborhoods typically see detached ADU projects that follow new construction compliance rules. 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 Rancho Cucamonga
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 Rancho Cucamonga project needs a report, submit your project details and we will confirm before you pay.
Title 24 Compliance for Rancho Cucamonga Remodels
Common triggers for Title 24 alteration reports in Rancho Cucamonga 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 Rancho Cucamonga
Rancho Cucamonga’s Victoria Gardens corridor generates significant retail, restaurant, and entertainment permit activity. The west-end logistics zone near Ontario Airport produces industrial and warehouse permits. We prepare NRCC forms for all nonresidential project types throughout the city. We prepare NRCC-ENV, NRCC-MCH, and NRCC-LTI forms for all nonresidential project types throughout Rancho Cucamonga. 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 Rancho Cucamonga
Which building department handles permits in Rancho Cucamonga?
City of Rancho Cucamonga Building and Safety Services Division at 10500 Civic Center Drive, Rancho Cucamonga, CA 91730. Phone: (909) 477-2710. Permits are submitted through the City of Rancho Cucamonga online permit portal. Title 24 energy compliance documentation must be included at the time of permit submittal.
What Title 24 climate zone is Rancho Cucamonga in?
Rancho Cucamonga is in Climate Zone 10. This is a hot inland San Bernardino County at the base of the San Gabriel Mountains 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 Rancho Cucamonga?
HERS testing is third-party field verification of energy systems. In Rancho Cucamonga, 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 Rancho Cucamonga?
Yes. All new ADUs, JADUs, granny flats, and in-law units submitted on or after January 1, 2026 require a Title 24 report in Rancho Cucamonga. Title 24 Calcs confirms the correct compliance path before starting your report.
How much does a Title 24 energy report cost in Rancho Cucamonga?
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 Rancho Cucamonga?
Most residential reports for Rancho Cucamonga 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.