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Rent Increase Notice Laws in Connecticut

Connecticut requires written notice of a rent increase one full rental period ahead for a month-to-month tenancy and 45 days ahead for longer leases, under a rule in effect since October 1, 2024.

Last checked . General information, not legal advice.

Connecticut at a glance

Notice for month-to-month increase
1 rental period (one full month)
For leases of one month or less, notice must equal the length of a full lease term.
Longer notice rule
45 days for leases longer than one month
The 45-day rule applies to rental agreements entered into, renewed or extended on or after October 1, 2024.

Sources

Last checked

The rules in Connecticut

How much notice must a landlord give before raising rent on a month-to-month tenancy in Connecticut?

Notice for month-to-month increase in Connecticut: 1 rental period (one full month). For leases of one month or less, notice must equal the length of a full lease term.

Does Connecticut require longer notice for large rent increases or long tenancies?

Longer notice rule in Connecticut: 45 days for leases longer than one month. The 45-day rule applies to rental agreements entered into, renewed or extended on or after October 1, 2024.

Where do the Connecticut rent increase notice laws come from?

The rules above come from Conn. Gen. Stat. 47a-4e. Each source is linked on this page. We last checked them in October 2026.

Good to know

Sec. 47a-4e was added by P.A. 24-143, effective October 1, 2024.

A tenant's failure to respond to a rent increase notice does not count as agreement to the increase.

What this means in practice

Put the rent increase in writing, state the new amount and the date it takes effect, and keep a copy along with proof of how and when it was delivered. Count the notice period from the date the tenant actually receives the notice, and check whether your state adds extra days for mailed notices.

Check local law as well as state law. Some cities and counties have rent stabilization ordinances, registration rules, or longer notice periods, and subsidized or rent-regulated units often follow separate federal or program rules.

A rent increase cannot be used to retaliate against a tenant for making a repair request or complaint, or to discriminate against a protected group. If the timing of an increase could look retaliatory, document the business reason for it.

General information, not legal advice. Laws change, and cities can add their own rules, so check the current statute before you rely on it.