Find a certified rater near you, before your inspection date.
HERS and ECC field verification, mechanical commissioning, and non-residential acceptance testing. Search by city, county, or ZIP — or find your climate zone on the map below.
- Listings
- 108
- Cities indexed
- 472
- Code cycles
- 2016 · 2019 · 2022 · 2025
Are you a certified rater?
Get listed in the directory GCs search when they need someone before an inspection. Free, and it stays free.
What are you looking for?
Three certifications, three different scopes of work. Pick the one your permit calls for.
- CF3RHERS / ECC RaterField verification under the HERS and ECC programs, the same role renamed by the 2025 energy code
- NRCXCommissioning AgentHVAC and mechanical commissioning for non-residential buildings
- NRCAAcceptance TesterNon-residential acceptance testing of mechanical, lighting and envelope systems
Browse by climate zone
All 58 counties →Every California address sits in one of sixteen CEC building climate zones, and the zone drives what your Title 24 report has to show. Click where your project is — or pick a number — for the counties in that zone.
- 1 — climate zone 1
- 2 — climate zone 2
- 3 — climate zone 3
- 4 — climate zone 4
- 5 — climate zone 5
- 6 — climate zone 6
- 7 — climate zone 7
- 8 — climate zone 8
- 9 — climate zone 9
- 10 — climate zone 10
- 11 — climate zone 11
- 12 — climate zone 12
- 13 — climate zone 13
- 14 — climate zone 14
- 15 — climate zone 15
- 16 — climate zone 16
Title 24, explained
All resources →- HERS / ECC · 5 minWhat is a HERS Rater, now called an ECC Rater?What the role does, how the 2025 energy code renamed it, and when your permit needs one.
- Forms · 4 minCF2R vs CF3R: which certificate is whichInstaller certificates versus verifier certificates, and who signs each one.
- Compliance · 6 minCalifornia Title 24 compliance: a builder’s guideThe whole path from CF1R through field verification, in the order it actually happens.