Minnesota: some chimney work needs a state license. Here's what that means.

Minnesota looks like a strong-license state, with a genuine exam and a Contractor Recovery Fund; for comparison, Maryland and Virginia run similar regimes. But two escape hatches undercut it exactly where chimneys live.

• The license only reaches contractors offering two or more special skills. A masonry-only chimney mason can operate fully unlicensed and legally, and a sweep-only business isn't on the statute's skill list at all. The moment a shop both rebuilds masonry fireplaces and installs stoves or inserts, it needs the license.
• The seller's material-facts disclosure can be waived in writing.

So the credential you'd look up may not exist for your chimney contractor, and the disclosure you'd rely on may have been waived. That is why certification and independent audits matter. And it's one of the highest wood-heat markets in the country.

Minnesota runs a real exam-based license, but it has a gap a chimney fits through. The Dept. of Labor & Industry (DLI) licenses residential building contractors and residential remodelers, defined as anyone who contracts with an owner to build or improve 1–4 family residential real estate "by providing two or more special skills" (Minn. Stat. § 326B.802; licensing duty § 326B.805 subd. 1). The license names a qualifying person (QP), who must pass the state exam and take 14 hours of continuing education every two years (DLI). (DLI's license page does not publish the exam's question count or passing score, so we don't cite them.) The catch: § 326B.805 subd. 6 exempts "specialty contractors who provide only one special skill." DLI puts it plainly: one-skill specialty contractors "are not required to have a state license (except residential roofers)." A second exemption covers anyone whose gross annual receipts from this work stay at or under $15,000. That person must file an affidavit for a Certificate of Exemption and renew it every year.

Where the boundary falls for chimney work (STATE LAW, from the statute's own lists). § 326B.802 names eight special skills. Two of them name hearth work: "Masonry and concrete" includes "masonry fireplaces", and "General installation specialties" includes "fireplaces and wood stoves." Here is how that sorts out:

• A masonry-only chimney or fireplace mason offers one skill and needs no state license.
• A shop that does masonry fireplace or chimney work and also installs fireplaces, inserts or wood stoves offers two skills and needs the license.
• Chimney roof work, such as re-flashing into the roof covering, can be "residential roofing." Roofers need a residential roofer license whatever their skill count (§ 326B.805 subd. 1; DLI).
• Sweeping or cleaning alone is not in any of the eight special-skill lists, and DLI's page doesn't mention cleaning or maintenance. On the statute's plain text, a sweep-only business falls outside the license. (This is our reading of the statute's lists, not a DLI ruling.)

Bonding is replaced by the Contractor Recovery Fund (§ 326B.89). Lookup: dli.mn.gov license search.

The exam tests building code and business, nothing chimney-specific. The one-skill and $15,000 exemptions mean many chimney contractors hold no state credential at all. Individual certifications (NCSG CCP/CCR; CSIA CCS, C-DET) remain the competence signal.

Minn. Stat. §§ 513.52–.60 impose a narrative "material facts" duty, not a fixed checklist. Under § 513.55 subd. 1, "before signing an agreement to sell or transfer residential real property," the seller must disclose all material facts they are aware of that could "adversely and significantly affect" the buyer's use or enjoyment. The disclosure is made in good faith, to the best of the seller's knowledge. A known cracked flue or unsafe chimney qualifies. The statute itself names no chimney item. NOT YET CONFIRMED Industry disclosure forms may itemize fireplace or chimney; we have not verified the current form's wording, so we don't cite it. The disclosure can be waived if seller and buyer agree in writing (§ 513.60). That waiver does not waive disclosure duties created by other laws. No inspection is mandated at transfer; NFPA 211 Level 2 stays a NATIONAL STANDARD.

Minnesota's remedies come in layers:

• Home Solicitation Sales (Minn. Stat. §§ 325G.06–.09). These cover personally solicited sales of goods, services or improvements to real property over $25 (definition, § 325G.06). The buyer has a right to cancel until midnight of the third business day after the sale (§ 325G.07). Caveat: § 325G.06 excludes home maintenance visits the buyer requested, so a sweep the homeowner called in is not a "solicited" sale. The door-knock upsell is.
• Consumer fraud statutes. The Prevention of Consumer Fraud Act (§ 325F.69) and the Deceptive Trade Practices Act can be enforced privately through the AG private-remedy statute (§ 8.31), with attorney's fees.
• Contractor Recovery Fund (§ 326B.89). It covers losses from contractors licensed as residential contractors or remodelers. Limits are $100,000 per owner or lessee per licensee, and $550,000 total per licensee (subd. 5, as amended 2024 c 127 art 6 s 2). The older $75k/$150k figures are stale.

These interlock with §1: the fund only pays on licensed contractors, so the one-skill exemption that un-licenses chimney-only shops also shuts their customers out of the fund. Complaints go to DLI and the AG.

The MN AG publishes standing home-improvement and door-to-door sales guidance. On Oct 14, 2025, the AG sued two remodeling contractors (High Road Builders LLC; Affordable Home Remodeling LLC) under the Prevention of Consumer Fraud Act and Deceptive Trade Practices Act. Those were remodeling prepayment cases, not chimney work (ag.state.mn.us/Office/Communications/2025/10/14_Contractors.asp). No MN chimney-sweep-specific enforcement action has been confirmed. A door-knock "we noticed your chimney" pitch is a textbook § 325G.06 solicited sale; a sweep the buyer requested is not.

The Minnesota State Building Code "is the standard that applies statewide" (Minn. Stat. § 326B.121). Enforcement is not universal, though. A municipality that had adopted the code as of Jan 1, 2008 must keep enforcing it, except municipalities under 2,500 people outside a metropolitan county. Every other municipality may adopt it by ordinance. DLI: the code "isn't enforceable by municipalities unless it is adopted by local ordinance." Small rural townships can therefore have little or no permit enforcement (LOCAL).

Current residential code: the 2018 IRC, incorporated by Minn. R. 1309.0010 (published Mar 31, 2020). DLI has started rulemaking toward the 2024 International codes (Request for Comments, Jan 21, 2025, for ch. 1305), but the docket lists no adoption or effective date yet. Where the code is enforced, chimney relines, rebuilds and solid-fuel appliance installs are generally permit work; routine sweeps and like-for-like caps generally are not.

No statewide burn-ban regime; outdoor wood boilers are regulated locally. Northern Minnesota has among the highest wood-heat density in the country, making it a core market. (Market characterization, REF.)

Minn. Stat. § 299F.51 requires an operational CO alarm "within ten feet of each room lawfully used for sleeping purposes" in every single-family dwelling and every multifamily unit, with hotel and lodging rooms also covered. Coverage is broad and standing. There is no statewide pre-sale certificate. A permitted chimney job is the natural moment to verify alarms.