Title 24 Reports for Every California City
Title 24 Calcs prepares permit-ready Title 24 energy compliance reports for projects across all of California. We serve every city and county in the state. Most residential reports are ready within 1–2 business days. Starting at $250 for eligible residential projects.
California has 16 climate zones. Each zone has different insulation requirements, window U-factor minimums, solar PV sizing rules, and HVAC thresholds. We confirm your project’s correct climate zone by address before starting any report. This ensures your compliance documentation is accurate for your specific city and building department.
Quick facts about our California Title 24 service:
• Coverage: All 58 California counties and every incorporated city
• Code: 2025 California energy code — in effect for permits submitted on or after January 1, 2026
• Starting price: $250 for eligible residential projects
• Turnaround: 1–2 business days for most residential reports
• Includes: CF1R, HERS registration, plan-sized PDFs, revision support
Title 24 by Region — California Service Areas
We have dedicated service pages for the most active permit markets in California. Each page includes local building department details, climate zone information, and project-specific guidance for that region.
Los Angeles — Climate Zones 6, 9, and 10
Title 24 reports for LADBS permit applications across all LA neighborhoods. Covers new construction, ADUs, room additions, remodels, and commercial projects citywide.
Los Angeles • Santa Monica • Glendale • Burbank • Pasadena • Long Beach • Torrance • Culver City • Hawthorne • Inglewood • Compton • Pomona
Orange County — Climate Zones 6 and 8
Title 24 reports for all 34 Orange County cities. Coastal cities fall in Zone 6. Inland cities fall in Zone 8. Each city has its own building department and plan check process.
Anaheim • Irvine • Newport Beach • Huntington Beach • Costa Mesa • Fullerton • Santa Ana • Garden Grove • Mission Viejo • Laguna Beach
San Diego County — Climate Zones 7 and 10
Title 24 reports for all 18 incorporated San Diego County cities and unincorporated areas. Coastal communities fall in Zone 7. Inland cities fall in Zone 10. Permits submitted through the City of San Diego DSD or each city’s own building department.
San Diego • Chula Vista • Carlsbad • Oceanside • Escondido • El Cajon • Encinitas • La Mesa • Santee • National City
Riverside County — Climate Zones 10 and 15
Title 24 reports for all Riverside County cities and unincorporated areas. Zone 10 covers most of the county. Zone 15 covers the Coachella Valley desert communities. One of the most demanding energy compliance regions in California.
Riverside • Corona • Moreno Valley • Murrieta • Temecula • Menifee • Palm Springs • Palm Desert • Eastvale • Hemet
San Bernardino County — Climate Zone 10
Title 24 reports for the Inland Empire and High Desert. Most San Bernardino County cities fall in Zone 10. High Desert communities like Victorville, Hesperia, and Apple Valley fall in higher zones with even stricter requirements.
San Bernardino • Fontana • Rancho Cucamonga • Ontario • Victorville • Rialto • Redlands • Chino • Chino Hills • Hesperia
Ventura and Santa Barbara Counties — Climate Zones 6 and 9
Title 24 reports for coastal and inland Ventura and Santa Barbara County cities. Climate zones vary by proximity to the coast.
Oxnard • Thousand Oaks • Simi Valley • Ventura • Camarillo • Santa Barbara • Santa Maria
California Title 24 Climate Zones and Your City
California has 16 Title 24 climate zones. Your zone affects insulation R-values, window U-factor and SHGC requirements, solar PV sizing, and HVAC thresholds. Using the wrong zone causes plan check corrections. We confirm your zone by project address before starting any report.
| Zone | Region | Key California Cities | Climate Characteristics |
|---|---|---|---|
| 1 | NW California Coast | Eureka, Crescent City, Fortuna, Scotia, Arcata | Cool and foggy year-round. High heating loads. Low cooling demand. Strong insulation requirements. |
| 2 | N California — Wine Country | Santa Rosa, Ukiah, Cloverdale, San Rafael, Sonoma, Novato | Mild coastal Northern California. Moderate heating. Low to moderate cooling loads. |
| 3 | N California Coast — Bay Area | San Francisco, Oakland, Berkeley, Daly City, Fremont, Santa Cruz | Cool marine climate. Low cooling loads. Strong insulation and window requirements. |
| 4 | N California Inland — Bay Area | San Jose, Milpitas, Sunnyvale, Palo Alto, Los Altos, Hollister, Mountain View | Mild inland Bay Area. Warm summers. Moderate heating and cooling loads. |
| 5 | Central California Coast | San Luis Obispo, Santa Maria, Pismo Beach, Atascadero, Morro Bay | Moderate coastal climate. Low heating and cooling loads. Strong solar PV requirements for new construction. |
| 6 | S California Coast — LA / OC | Santa Monica, Long Beach, Laguna Beach, Newport Beach, Huntington Beach, Costa Mesa, Dana Point, San Clemente | Mild coastal SoCal. Low heating loads. Strict window U-factor and solar PV requirements. |
| 7 | S California Coast — San Diego | San Diego, Chula Vista, Carlsbad, Oceanside, Encinitas, Coronado, Imperial Beach, Vista | Mediterranean coastal climate. Moderate heating and cooling. Strong solar PV requirements. |
| 8 | Inland OC / SoCal | Anaheim, Irvine, Fullerton, Santa Ana, Garden Grove, Tustin, Yorba Linda, Buena Park, Brea, Cypress | Warmer inland OC. Higher summer cooling loads than Zone 6. More demanding HVAC and insulation standards. |
| 9 | LA County Inland / San Fernando Valley | Burbank, Pasadena, Van Nuys, Calabasas, Pomona, Simi Valley, Covina, Beverly Hills, West Hollywood | Hot summers. High cooling loads. More demanding than coastal zones. Strong HVAC efficiency requirements. |
| 10 | Inland Empire / Inland SD | Riverside, Corona, Moreno Valley, Temecula, Murrieta, El Cajon, Escondido, Ontario, Fontana, Eastvale, Hemet, Perris | Hot inland climate. Very high cooling loads. Among the most demanding energy compliance zones in California. |
| 11 | Central Valley North | Red Bluff, Williams, Auburn, Tracy, Pittsburg, Chico | Hot dry summers. Cold winters. High heating and cooling loads. Demanding insulation requirements. |
| 12 | Sacramento Valley | Sacramento, Stockton, Modesto, Elk Grove, Roseville, Folsom, Livermore, Concord, Oakdale | Hot dry summers. Moderate winters. High cooling loads. Strong insulation and HVAC requirements. |
| 13 | Central Valley South | Fresno, Bakersfield, Visalia, Madera, Tulare, Hanford, Maricopa | Extreme summer heat. High cooling loads. Strong HVAC efficiency and insulation requirements. |
| 14 | High Desert / Antelope Valley | Lancaster, Palmdale, Victorville, Hesperia, Barstow, Twentynine Palms, Apple Valley | Hot summers. Cold winters. Wide temperature swings. High heating and cooling loads. Demanding compliance. |
| 15 | Coachella Valley Desert | Palm Springs, Palm Desert, Indio, Coachella, Rancho Mirage, La Quinta, Indian Wells, Cathedral City, Desert Hot Springs | Extreme desert heat. The highest cooling loads in California. Strictest insulation, window, and HVAC requirements statewide. Solar PV mandatory for all new construction. |
| 16 | Mountain / Sierra Nevada | Tahoe City, Big Bear Lake, Idyllwild, Lake Arrowhead, Mammoth Lakes, Tehachapi | High elevation. Cold winters with significant snowfall. Highest heating loads in California. Very demanding insulation requirements. |
Not sure which zone your project falls in? Include your project address when you submit and we will confirm your climate zone before we start. You can also use the California Energy Commission climate zone tool to look up your address.
All California Cities We Serve — A to Z
We prepare Title 24 reports for projects in every California city. Click any city to view its dedicated Title 24 service page with local building department details, climate zone information, and project-specific guidance.
A
Alameda • Albany • Alhambra • Aliso Viejo • Anaheim • Antioch • Apple Valley • Arcadia • Atascadero • Auburn • Azusa
B
Bakersfield • Baldwin Park • Banning • Beaumont • Bell • Bellflower • Berkeley • Beverly Hills • Blythe • Brea • Buena Park • Burbank
C
Calabasas • Camarillo • Canyon Lake • Carlsbad • Carson • Cathedral City • Cerritos • Chino • Chino Hills • Chula Vista • Citrus Heights • Coachella • Compton • Concord • Corona • Coronado • Costa Mesa • Culver City • Cypress
D
Dana Point • Del Mar • Desert Hot Springs • Diamond Bar • Downey • Dublin
E
Eastvale • El Cajon • El Monte • Elk Grove • Encinitas • Escondido
F
Fairfield • Folsom • Fontana • Fountain Valley • Fremont • Fresno • Fullerton
G
Garden Grove • Gardena • Glendale • Glendora
H
Hawthorne • Hayward • Hemet • Hesperia • Huntington Beach • Huntington Park
I
Imperial Beach • Indian Wells • Indio • Inglewood • Irvine
J — L
Jurupa Valley • La Habra • La Mesa • La Mirada • La Palma • La Quinta • Laguna Beach • Laguna Hills • Laguna Niguel • Lake Elsinore • Lake Forest • Lakewood • Lancaster • Lemon Grove • Livermore • Lodi • Long Beach • Los Angeles
M
Menifee • Merced • Mission Viejo • Modesto • Monrovia • Montclair • Montebello • Moreno Valley • Murrieta
N
National City • Newport Beach • Norco • Norwalk
O
Oakland • Oceanside • Ontario • Orange • Oxnard
P
Palm Desert • Palm Springs • Palmdale • Palo Alto • Pasadena • Perris • Placentia • Pomona • Poway
R
Rancho Cucamonga • Rancho Mirage • Rancho Santa Margarita • Redlands • Redondo Beach • Rialto • Richmond • Riverside • Roseville
S
Sacramento • Salinas • San Bernardino • San Clemente • San Diego • San Francisco • San Jose • San Juan Capistrano • San Marcos • San Mateo • Santa Ana • Santa Barbara • Santa Clara • Santa Clarita • Santa Maria • Santa Monica • Santa Rosa • Santee • Seal Beach • Simi Valley • Solana Beach • South Gate • Stockton • Sunnyvale
T
Temecula • Thousand Oaks • Torrance • Tustin
V
Vallejo • Ventura • Victorville • Visalia • Vista
W — Z
Ready to Order Your Title 24 Report?
Submit your project and we will confirm the correct compliance path, required forms, and pricing before you pay. Most residential reports are ready within 1–2 business days. All reports include HERS registration, plan-sized PDFs, and revision support.