Short summaries of the rules that shape Connecticut leases, notices, and deposit papers on LeaseGen.io. Last reviewed 2026-08-15. Not legal advice.
Security deposits
Cap
2× rent
Return clock
21 days after the tenancy ends
A security deposit generally may not exceed two months’ rent, or one month if the tenant is 62 or older (Conn. Gen. Stat. § 47a-21). Interest is due at the banking commissioner’s rate. Unused deposit is generally due within 21 days after the tenancy ends.
A month-to-month tenancy generally takes notice equal to one rental period. A notice to quit is a separate eviction step (Conn. Gen. Stat. § 47a-23).
The landlord may enter at reasonable times. Except in an emergency, give reasonable notice; 24 hours is the usual writing (Conn. Gen. Stat. § 47a-16).
A Connecticut rent increase should be in writing. Many landlords use at least the same notice they would use to end a month-to-month tenancy. A month-to-month tenancy generally takes notice equal to one rental period. A notice to quit is a separate eviction step (Conn. Gen. Stat. § 47a-23). The lease may require more. Local rent-control rules can cap the amount even when the notice period is met.
Connecticut eviction starts with a notice to quit. Many grounds need a cure notice first. Do not use this in place of the official notice-to-quit form if a court expects that form.
Connecticut uses a notice to quit, generally at least 3 days (Conn. Gen. Stat. § 47a-23), not a separate pay-or-quit cure in every case.
Pay-or-quit deadline: 3 days
A notice to quit must be served like a summary-process paper. Consider a process server.