California: who needs a license to work on your chimney or fireplace?

Checked Jul 2026·Laws as cited·Not in the Sep 2026 verification pass

Public recordCA LAW

For consumer remedies, home-sale rules and carbon monoxide law, see California chimney & fireplace laws — know your rights. That page was verified more recently than this matrix.

Stove & insert installation: is a credential required in California?

#stove-installLICENSE

Credential: No hearth-named full classification, but CSLB licensure captures the work: the hearth-shop lane is C-61/D-34 Prefabricated Equipment ('factory built fireplaces and accessories (no masonry facing); major appliance installations... in connection with existing fuel and energy lines which are installed by others' — a C-61 limited specialty with NO trade exam, per Pass 1); masonry fireplace = C-29, ducted wood furnace = C-20 Warm-Air Heating, or B General Building. The § 7048 $1,000 minor-work exemption is VOID where a permit is required and stove installs are mechanical-permit work, so the install is licensed from $0 in practice. AIR-DISTRICT AXIS: no statewide EPA-stove install statute — but BAAQMD Reg 6 Rule 3 bans ALL wood-burning devices (including EPA-certified and pellet) in NEW construction across the 9-county Bay Area (amended 10/1/2025) and SJVAPCD Rule 4901 adds install/remodel restrictions with a Wood Burning Heater Statement of Compliance filed at permit. Code: 2022 CRC (2021 IRC base) through 12/31/2025; 2025 CRC (2024 IRC base) eff. 1/1/2026. NFI voluntary
Issuing body: CSLB; local building departments (mechanical permits); regional air districts (BAAQMD, SJVAPCD and others)
Statute: B&P § 7048 (as raised by AB 2622); 16 CCR §§ 832.20/832.29 + C-61/D-34 classification; BAAQMD Reg 6 Rule 3; SJVAPCD Rule 4901
Dollar threshold: $1,000 (§ 7048) — void where a permit is required, and stove installs are permit work
Exam: n for D-34 (C-61 classes have no trade exam); y for C-20/C-29/B
Local overlay: y — air districts are the real overlay (BAAQMD 9-county new-construction wood ban; SJVAPCD Rule 4901); city permit regimes (LA/SF)
Confidence: high · checked 2026-07-22
Sources: GOVcslb.ca.gov/About_Us/Library/Licensing_…GOVbaaqmd.gov/en/rules-and-compliance/rul…REFvalleyair.org/rules-and-planning/rules-un…GOVhcd.ca.gov/node/1815

Chimney flashing: is a credential required in California?

#chimney-flashingLICENSE

Credential: C-39 Roofing Contractor — 16 CCR § 832.39 verbatim: 'A roofing contractor installs products and repairs surfaces that seal, waterproof and weatherproof structures... to prevent water or its derivatives, compounds or solids from penetrating such protection... uses the following material: asphaltum, pitch, tar, felt, glass fabric, urethane foam, metal roofing systems, flax, shakes, shingles, roof tile, slate or any other roofing, waterproofing, weatherproofing or membrane material(s)' — chimney flashing/leak repair is squarely inside (this is the scope sentence Alabama later copied). AUDIT TRIPWIRE (Pass 1 merge): C-39 licensees must carry workers' comp even with ZERO employees (since 2007 — the only class with a two-decade solo-WC mandate) — a C-39 with a WC exemption on file is out of compliance. § 7048 $1,000 exemption void where a permit is required (re-roofs are permit work; a small flashing-only repair without permit can shelter under $1,000)
Issuing body: CSLB
Statute: 16 CCR § 832.39; B&P §§ 7048, 7125.5 (C-39 WC)
Dollar threshold: $1,000 (§ 7048) — void where permit required
Exam: y
Local overlay: n — statewide class; city permits vary
Confidence: high · checked 2026-07-22
Sources: REFlaw.cornell.edu/regulations/california/16-C…GOVwww2.cslb.ca.gov/About_Us/Library/Licensing_…

Gas fireplace service: is a credential required in California?

#gas-fireplace-serviceLICENSE

Credential: CSLB C-36 Plumbing — 16 CCR § 832.36 scope expressly includes 'all gas appliances, flues and gas connections for all systems' = gas piping + gas appliance connection; C-20 Warm-Air Heating (§ 832.20) covers service of gas-fired warm-air heating appliances incl. inserts sold as heaters; NO LP/NG split — CSLB scopes are fuel-agnostic and no separate LP installer program found (absence, medium); no chimney-named class anywhere at CSLB (masonry chimney = C-29; factory-built hearth = C-61/D-34); gas work is effectively licensed from $0 because the § 7048 minor-work exemption is void where a permit is required and gas work is permit work
Issuing body: CSLB — Contractors State License Board
Statute: Bus. & Prof. Code §§ 7028, 7048; 16 CCR §§ 832.36, 832.20
Dollar threshold: $1,000 minor-work exemption (raised from $500 by AB 2622 eff. 1/1/2025) — void if a permit is required
Exam: y (trade + law/business exams per classification)
Local overlay: y — LA (LADBS) and SF (DBI) permit regimes; no city gas-fitter license found (UNVERIFIED)
Confidence: high · checked 2026-07-10
Sources: REFlaw.cornell.edu/regulations/california/16-C…GOVcslb.ca.gov/about_us/library/licensing_…REFlaw.justia.com/codes/california/code-bpc/d…

Gas log installation: is a credential required in California?

#gas-log-installLICENSE

Credential: Two-class split on one hearth job: C-61/D-34 Prefabricated Equipment — 'factory built fireplaces and accessories (no masonry facing); major appliance installations... in connection with existing fuel and energy lines which are installed by others' — is the hearth-shop lane for SETTING the appliance/log set, but the gas line/connection itself must be run under C-36 (or C-20 within warm-air scope); a D-34-only shop legally cannot touch the gas line
Issuing body: CSLB
Statute: 16 CCR § 832 (C-61 limited specialty); CSLB D-34 scope page
Dollar threshold: $1,000 minor-work exemption (void if permit required)
Exam: y (law/business exam; no D-34 trade exam — C-36/C-20 have trade exams)
Local overlay: n
Confidence: high · checked 2026-07-10
Sources: GOVcslb.ca.gov/About_Us/Library/Licensing_…

What insurance does California require of contractors?

#insurance

Regime: license (CSLB — all work >= $1,000 or any permit-required work; B&P 7028/7048)
Liability minimum: NONE for sole proprietors/partnerships/corporations — absence finding: 'CSLB-licensed' never implies liability insurance; EXCEPTION: LLC licensees must carry $1,000,000 GL minimum (scaling +$100,000 per personnel of record beyond five, capped $5,000,000) per B&P § 7071.19
Bond: $25,000 contractor license bond (B&P § 7071.6; raised from $15k eff. 1/1/2023 by SB 607); + $25,000 Bond of Qualifying Individual (§ 7071.9) when the RME/RMO qualifier owns <10%; + $100,000 LLC employee/worker bond (§ 7071.6.5); claimants (§ 7071.5): homeowners, persons damaged by willful/deliberate contract violation, employees owed wages; bonds FILED with CSLB and shown in the public lookup incl. bond history = STATE-VERIFIED
Guaranty fund: NONE — CSLB has no recovery/guaranty fund (absence verified on CSLB bond pages; the $25k bond is the consumer instrument — thin vs the AZ/NV funds)
Workers' comp threshold: 1 employee (Lab. Code § 3700); HEADLINE: SB 216 makes C-8/C-20/C-22/C-39/C-61-D-49 licensees carry WC EVEN WITH ZERO EMPLOYEES (since 7/1/2023) — a solo hearth shop holding C-20 must carry WC today and cannot file the exemption; the ALL-classification no-employee mandate was DELAYED from 1/1/2026 to 1/1/2028 by SB 1455 (2024) — C-36/C-29/D-34 solos may still file the § 7125 exemption certificate until then; WC lapse = automatic license suspension
How to verify: bonds + WC status STATE-VERIFIED in the CSLB lookup (insurers file certificates that auto-update the license record; exemption-on-file visible); GL = nothing to verify except LLC licensees; lookup cslb.ca.gov
Confidence: high · checked 2026-07-10
Sources: GOVcslb.ca.gov/contractors/maintain_licens…GOVcslb.ca.gov/about_us/llc.aspxGOVcslb.ca.gov/Contractors/Maintain_Licens…GOVcslb.ca.gov/Resources/BoardPackets/2024…

Download the full licensing matrix (CSV) · All states

Before anyone goes on your roof

What should you ask a chimney company in California?

Is your company a member of the National Chimney Sweep Guild (NCSG)?
Does the technician coming to my home hold an individual NCSG certification, and which one?
Does the technician hold a National Fireplace Institute (NFI) certification — and for which fuel: wood, gas, or pellet?
What other certifications does the technician hold (for example, CSIA), and can I check them on the issuer's own roster?
What state or local license or registration covers this work here, and what is the number?
Will you send a certificate of insurance, dated and naming your company, before work starts?
Which NFPA 211 inspection level — Level 1, 2, or 3 — are you performing, and why that level?
Will you show me what you found — photos or video of the flue — in writing?

We take no fee from any certification body, guild, or contractor, and are not paid to mention anyone named.