Connecticut: Rules by state

Connecticut’s sale-transfer rule for most one- and two-family homes is affidavit-based, not inspection-certificate-based: at closing, the transferor presents a signed smoke/CO affidavit under Conn. Gen. Stat. § 29-453. For one- and two-family dwellings, local fire marshals inspect for smoke-equipment compliance only on complaint or at an owner/occupant’s request, so there is no automatic municipal pre-sale certification step in the statute I found. ([cga.ct.gov](https://www.cga.ct.gov/2024/sup/chap_541a.htm))

Checked against official sources on October 4, 2026. Rules and links change; confirm with the office listed before you act.

Official resources in Connecticut

CT Fire Safety and Prevention Codes

State Fire Marshal page for the current Connecticut fire safety and fire prevention codes and code documents.

Connecticut State Building Code - Regulations

Official page for the current Connecticut State Building Code and the code edition now in effect.

DCP Consumers - Real Estate

Consumer-facing state real estate page linking current residential disclosure forms used in Connecticut transactions.

Key facts for Connecticut

At closing, the seller must give the buyer a signed affidavit on smoke/CO compliance or no-CO-risk; it covers 1-2 family homes and common-interest units. ([cga.ct.gov](https://www.cga.ct.gov/2024/sup/chap_541a.htm))
Section 29-453 requires smoke alarms in or immediately near each bedroom, and they must sound when the test button is pressed. ([cga.ct.gov](https://www.cga.ct.gov/2024/sup/chap_541a.htm))
The affidavit asks, if applicable, whether smoke alarms are battery-powered, hardwired, and interconnected; pre-1990 homes may note interconnection conditions are not applicable. ([cga.ct.gov](https://www.cga.ct.gov/2024/sup/chap_541a.htm))
For one- and two-family homes, local fire marshals inspect only upon complaint or owner/occupant request, not through an automatic pre-sale inspection program. ([cga.ct.gov](https://cga.ct.gov/2022/sup/chap_541.htm?utm_source=openai))
Current CT fire code says smoke alarms generally cannot stay in service over 10 years; combo smoke/CO alarms are replaced at end-of-life or 10 years. ([portal.ct.gov](https://portal.ct.gov/-/media/DAS/Office-of-State-Building-Inspector/2022-State-Codes/2022-CSFPC-Final-LRRC-220420.pdf))
I found no Connecticut sale-transfer statute requiring a home fire extinguisher, but Connecticut does prohibit selling unlisted portable extinguishers. ([prdext3.cga.ct.gov](https://prdext3.cga.ct.gov/current/pub/chap_541.htm))

What to do next

Before closing, test every smoke and CO alarm, then check manufacture dates and any end-of-life chirps; Connecticut’s current fire code uses a 10-year service limit unless manufacturer instructions say otherwise. ([portal.ct.gov](https://portal.ct.gov/-/media/DAS/Office-of-State-Building-Inspector/2022-State-Codes/2022-CSFPC-Final-LRRC-220420.pdf))
If you want an official local check, ask your local fire marshal; § 29-305 allows one- and two-family smoke-equipment inspections on owner or occupant request. ([cga.ct.gov](https://cga.ct.gov/2022/sup/chap_541.htm?utm_source=openai))
When replacing alarms, choose listed products; Connecticut officials say smoke alarms should be listed to UL 217 and CO alarms to UL 2034. ([portal.ct.gov](https://portal.ct.gov/das/press-room/press-releases/2026/das-and-dcp-non-listed-fire-safety-products?utm_source=openai))

Helpful guides

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