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Rent increases in Connecticut

Source: Conn. Gen. Stat. § 47a-4e (P.A. 24-143); §§ 47a-20, 7-148b–7-148f · Checked against the statute

Notice
45 days / 1 month / 7 days
Statewide cap
No statewide cap
During a lease
No state statute
Local rent control
Allowed with limits

When can a rent increase start in Connecticut?

Choose the state and the date the notice is given.

How much notice is required

No rent increase is effective unless the landlord gives written notice at least 45 days before it takes effect; for a lease with a term of one month or less, notice equal to one full term. Silence by the tenant is not agreement. Applies to rental agreements entered, renewed or extended on or after Oct. 1, 2024. (Conn. Gen. Stat. § 47a-4e)

Applies toWhenNotice
Fixed-term lease at renewal—45 days
Month-to-month—1 month
Week-to-week—7 days
  • The notice must be in writing.

Example: a notice handed over on November 2, 2026 in Connecticut

Earliest date the new rent can start, with rent due on the 1st, worked out from the Connecticut rule above:

  • For a month-to-month tenant of 1 year raising rent 5% or a month-to-month tenant of 3 years raising rent 12%: Wednesday, December 2, 2026
  • For a week-to-week tenant raising rent 5%: Monday, November 9, 2026

Raising rent during a lease

§ 47a-4e states it does not allow a landlord to increase rent during the term of a rental agreement; no statute expressly bars a lease clause permitting it. (Conn. Gen. Stat. § 47a-4e)

City and county rent control

No rent control, but municipalities may create fair rent commissions that hear complaints and can order excessive rents or increases reduced. Every municipality of 15,000+ people must create or join one by Jan. 1, 2028. (Conn. Gen. Stat. §§ 7-148b–7-148d (2026 Supp.))

Retaliatory rent increases

A landlord may not demand a rent increase within 6 months after a tenant makes a good-faith code complaint or fair rent commission complaint, requests repairs, sues under § 47a-14h, or joins a tenants' union. Exceptions apply for tenant-caused conditions and pro-rated tax/cost increases. (Conn. Gen. Stat. §§ 47a-20, 47a-20a)

Also good to know

  • Since Jan. 1, 2026, using revenue-management software to set rents or occupancy levels for residential units is an unlawful practice under the state antitrust law, chapter 624 (Conn. Gen. Stat. § 47a-4f, Nov. Sp. Sess. P.A. 25-1).
  • The Governor's 2026 bill to cap increases at 5% after a property sale (HB 5092) was tabled and not enacted.
  • Federal notice rules for subsidized housing are not changed by § 47a-4e.
  • In buildings or complexes of 5+ units (and mobile home parks), tenants aged 62+ or with a qualifying disability (or living with such a relative) can be evicted only for good cause, including refusing a fair and equitable rent increase; their rent may rise only to the extent it is fair and equitable, and they may contest an increase at the local fair rent commission or, if none, in Superior Court (Conn. Gen. Stat. § 47a-23c).

Other Connecticut renting rules in numbers

Security deposit
Two months' rent for tenants under 62. One month's rent for tenants 62 or older; a tenant who turns 62 after paying more can ask for the excess back. Return deadline: 21 days after the tenancy terminates.
Notice for unpaid rent
3 days (notice to vacate, no right to pay)
How a written notice is delivered (eviction-notice rules)
An attested copy of the notice to quit must be served by a proper officer (a state marshal) on each tenant/occupant or left at their residence (Conn. Gen. Stat. § 47a-23(c), as amended by P.A. 25-78). A Right to Counsel notice must be attached to every residential notice to quit (P.A. 21-34 § 1(f)(2), per the Judicial Branch).
Notice for other lease violations
15 days (fix it or move out)
Small claims court limit
$5,000 — where most deposit and rent disputes are filed.
Repairs
Time to repair: 15 days; urgent: 48 hours. Repair and deduct: allowed with limits; withholding rent: allowed with limits.
Deposit kept wrongly
A landlord who violates the return rules is liable for twice the deposit. If the only violation is unpaid interest, the penalty is $10 or twice the interest, whichever is greater (§ 47a-21(d)(2)). Knowing, wilful failures can also bring fines.
Lawful reasons to end a lease early
Domestic violence, sexual assault or stalking; Unit unlivable or landlord fails to repair; Landlord harassment or illegal entry

Sources

Laws change. This page was checked against the sources above on October 15, 2026. It is legal information, not legal advice; for a dispute, contact your state's legal aid. See our methodology.