Connecticut: registration, not a license, for chimney work.

Connecticut is the strong-remedy, soft-disclosure state. Its consumer machinery is among the best in the country: a Guaranty Fund that actually pays homeowners up to $25k, a per-se CUTPA hook with punitive damages, and a rule that a non-compliant contractor can't even enforce his own contract. Yet the property disclosure is still functionally optional behind a $500 credit — while the CO affidavit was just made mandatory in 2023. Two credits, opposite fates. Against the ladder: PA/NJ register, MI licenses, OH does neither — CT registers and then backs it with a fund and CUTPA, the closest the Northeast comes to Maryland's guaranty model without a licensing exam. The competence gap survives all of it.

Connecticut has no chimney license and no contractor exam — it runs mandatory STATE REGISTRATION with a rare consumer backstop. The Home Improvement Act (Conn. Gen. Stat. Chapter 400, § 20-418 et seq.) requires Home Improvement Contractor registration with the Dept. of Consumer Protection (DCP) (§ 20-420). "Home improvement" covers residential repair/remodeling work where the total price agreed or offered exceeds $200 (§ 20-419(5)), and a person whose home improvement contracts with all customers total no more than $1,000 in any 12 consecutive months is excluded from the definition of "contractor" (§ 20-419(4)(B)). Application fee $120 (§ 20-421). Registration is identity + fee, no competency exam. DCP says chimney repairs (liners, caps, mortar work) require HIC registration, while cleaning-only services do not. The standout: registered contractors fund the Home Improvement Guaranty Fund (§ 20-432) — a homeowner who hired a registered contractor can recover up to $25,000 per claim on an unpaid judgment (§ 20-432; DCP). Public lookup: elicense.ct.gov (DCP verify). Using an unregistered contractor forfeits Guaranty Fund access.

Registration attests to Guaranty-Fund participation and identity — not skill, and nothing chimney-specific. A registered contractor may never have inspected a flue. Individual certs (NCSG CCP/CCR; CSIA CCS, C-DET) remain the competence signal; the Guaranty Fund covers your money, not your masonry.

Uniform Property Condition Disclosure Act (§ 20-327b) requires the seller of 1–4 unit residential property to deliver the DCP Residential Property Condition Report before any binder/contract. The statutory report items include "Chimney, Fireplace, Wood or Coal Stove problems? If YES, explain" (§ 20-327b(d)(2)(H)(xi)) and "Heating system problems?" (§ 20-327b(d)(2)(D)(i)) — actual-knowledge standard. But the disclosure is functionally optional: under § 20-327c a seller who simply doesn't furnish the report owes the buyer a $500 credit at closing — and many pay it to reveal nothing. So Connecticut still has the escape hatch New York just deleted. No inspection is mandated at transfer; NFPA 211 Level 2 stays a NATIONAL STANDARD, not CT law.

Connecticut's real strength. A Home Improvement Act violation is a per se violation of the Connecticut Unfair Trade Practices Act — CUTPA (§ 42-110a et seq.) — which carries punitive damages and attorney's fees. Under § 20-429, a home-improvement contract must be written, signed by both parties, and contain the contractor's registration number, start/completion dates, and the cancellation notice; a non-compliant contract is generally unenforceable by the contractor, subject to a limited equitable-recovery exception in § 20-429(f) (a powerful homeowner shield). § 20-427(b) makes any chapter violation an unfair or deceptive trade practice. Home-improvement contracts are treated as home-solicitation sales with a 3-business-day right to cancel (§ 42-134a et seq.; notice per § 42-135a). DCP and the AG both enforce.

DCP has issued chimney-specific scam alerts on Oct 30, 2023 and Nov 3, 2025. The 2025 alert reports 48 complaints involving chimney services since fall 2024 and describes the pattern: unsolicited calls (often 800 numbers) or door-to-door visits, artificially low estimates, then urgent "structural" problems that don't exist, no contract, pressure for cash/wire/prepaid-card payment, and — per DCP — vehicles with out-of-state (New York) plates. DCP reminds consumers of the three-day right to cancel a chimney-repair contract and to verify HIC registration at elicense.ct.gov. No specific named CT chimney enforcement action verified — keep to patterns.

Statewide Connecticut State Building Code (IRC-based; administered by local building officials). The 2022 CSBC (2021 I-Codes) remains in force; the 2026 CSBC (2024 IRC base) was scheduled for July 1, 2026 but is delayed pending Legislative Regulation Review Committee approval per DAS — check status at publish. Chapter 10-type chimney/fireplace provisions apply. Relines, rebuilds, and solid-fuel appliance installs are generally permit work; routine sweeps and like-for-like caps generally are not. Local administration means local variation — say so.

No statewide burn-ban or stove-emission regime. Not a material content section for CT.

Two layers. § 29-292 requires CO detection in new 1–2 family dwellings (building permits on/after Oct 1 2005; CO/occupancy certification for permits on/after Jan 1 2012). At transfer, § 29-453 requires the seller to hand the buyer at closing an affidavit that the home has compliant smoke/CO equipment (or that it poses no CO risk — no fuel-burning appliance, fireplace, or attached garage). Public Act 23-164 (effective Oct 1, 2023) rewrote the section; the current text contains no credit alternative — the affidavit is mandatory (exemptions for co-owner, family, court-ordered and foreclosure transfers). Note the split: CT killed the CO credit but kept the disclosure credit.