Ohio: 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 recordOH LAW

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

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

Credential: No statewide residential credential (OCILB is commercial-only); RCO 2024 (2021 IRC base, eff. 3/1/2024) governs the work incl. listing/manufacturer-instruction rules; permits and any contractor registration are local; AG Home Construction Service Suppliers registration only >$25k
Issuing body: local building departments; Ohio Board of Building Standards (code only)
Statute: RCO 2024 (OAC 4101:8); ORC Ch. 4740 (OCILB, commercial); HCSSA cite UNVERIFIED (see Pass 1)
Dollar threshold: $25,000 (HCSSA registration layer only)
Exam: n
Local overlay: y — Columbus/Cleveland/Cincinnati city contractor registration/licensing
Confidence: high · checked 2026-07-09
Sources: REFcodes.iccsafe.org/content/OHBC2024P1GOVdam.assets.ohio.gov/image/upload/com.ohio.gov/d…

Credential: No statewide residential credential — OCILB HVAC/plumbing licenses are COMMERCIAL-only; residential gas work regulated locally; AG Home Construction Service Supplier registration only >$25k
Issuing body: OCILB (commercial); city/county building depts (residential); Ohio AG (HCSSA registration)
Statute: ORC Ch. 4740 (OCILB); HCSSA statute cite UNVERIFIED
Dollar threshold: $25,000 (HCSSA registration layer only)
Exam: n
Local overlay: y — Columbus (Code Title 41 ch. 4114 trade licensing), Cleveland, Cincinnati (city registration/licensing)
Confidence: medium · checked 2026-07-09
Sources: REFadaptdigitalsolutions.com/articles/ohio-contractor-li…REFsimplywise.com/blog/ohio-contractor-licenseREFlibrarystage.municode.com/oh/columbus/codes/code_of_o…

Regime: none statewide for chimney/masonry/GC (municipal only); OCILB specialty overlay for HVAC/gas-scope work
Liability minimum: NONE for chimney/masonry; OCILB trades (HVAC/electrical/plumbing/hydronics/refrigeration): liability insurance in board-determined amount (ORC 4740.06(B)(4)) = $500,000/occurrence per OCILB application materials (amount MEDIUM — statute delegates to board)
Bond: none at state level (bonds exist only in municipal registration schemes)
Guaranty fund: none — no contractor recovery/guaranty fund in Ohio law
Workers' comp threshold: 1 employee from first day; MONOPOLISTIC state fund — coverage only through Ohio BWC (ORC ch. 4123; exact section UNVERIFIED); sole props/partners/single-member LLC elective via form U-3S
How to verify: OCILB trades: COI on file with board naming OCILB certificate holder + eLicense lookup (elicense.ohio.gov); chimney/masonry: nothing state-side; WC lookup: BWC employer coverage lookup (public, shows active status + policy number)
Confidence: high (structure/absence); medium ($500k amount) · checked 2026-07-09
Sources: GOVcodes.ohio.gov/ohio-revised-code/section-4…GOVinfo.bwc.ohio.gov/for-employers/workers-compe…GOVinfo.bwc.ohio.gov/for-providers/see-if-an-emp…

Before anyone goes on your roof

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.