What clauses are legally required in every Connecticut lease agreement?
Every Connecticut lease should identify the landlord/agent and all adult tenants, the property, the rent and due date, and the term. Connecticut then layers on the deposit-and-interest rules, the 9-day late-fee grace period, and the Notice to Quit procedure (below). A lease for a term longer than one year must be in writing to be enforceable under the Statute of Frauds (§ 52-550), and leases over one year may be recorded (§ 47-19).
Connecticut security deposit rules — caps, interest, and the 21-day return
Conn. Gen. Stat. § 47a-21 governs deposits in detail:
| Rule | Requirement |
|---|---|
| Cap (tenant under 62) | No more than 2 months' rent |
| Cap (tenant 62 or older) | No more than 1 month's rent |
| Where held | Escrow in a Connecticut financial institution |
| Interest | Paid or credited to the tenant annually on the tenancy anniversary at the state "deposit index" rate |
| Return | Within 21 days of termination, or 15 days after the tenant gives a written forwarding address, whichever is later, with an itemized statement |
| Penalty | Violating the return rules exposes the landlord to twice the amount of the deposit |
For a multi-state comparison, see security deposit rules every landlord must know.
Late fees and rent rules in Connecticut
Connecticut requires a grace period and caps the fee (§ 47a-15a): no late charge may be imposed until the rent is 9 days late (4 days for a week-to-week tenancy), and the charge may not exceed the lesser of $5 per day up to a maximum of $50 or 5% of the delinquent rent. Only one late charge may be assessed per delinquent payment, and the grace period cannot be waived.
Notice to quit and ending a Connecticut tenancy
Connecticut does not use a 30-day termination notice — it uses a Notice to Quit (§ 47a-23):
| Situation | Notice |
|---|---|
| Nonpayment of rent | After the 9-day grace period, a 3-day notice to quit |
| Lapse of time / no-cause (month-to-month) | 3-day notice to quit |
An important protection: a tenant who is 62 or older, blind, or has a disability and lives in a building with five or more units generally may be evicted only for cause — not by lapse of time. After serving the Notice to Quit, the landlord must bring a summary-process action; self-help eviction is unlawful.
What disclosures must Connecticut landlords provide?
Connecticut's disclosure duties:
- Deposit institution (§ 47a-21): the deposit must be held in escrow, and the landlord must disclose the name of the institution and the account number on the written request of the tenant (or the Banking Commissioner).
- Lead-based paint (federal): the disclosure and EPA pamphlet for pre-1978 housing.
- Post-foreclosure notice (§§ 47a-20e, 49-31p): a buyer at foreclosure must give a bona fide tenant at least 90 days' notice and honor the lease term — a protection rather than a move-in disclosure.
What happens if a Connecticut lease is missing required terms?
Specific failures carry specific consequences:
- Deposit over the cap or returned late: violating the return rules exposes the landlord to twice the amount of the deposit (§ 47a-21).
- Late fee before day 9 or over the cap: unenforceable (§ 47a-15a).
- Defective Notice to Quit: a summary-process case can be dismissed if the notice does not comply with § 47a-23.
Managing rentals in more than one state? Compare Connecticut's rules with our New York and New Jersey lease requirement guides.
Full Connecticut disclosure checklist
For a dedicated, statute-by-statute rundown of every notice a Connecticut landlord must give at signing, see our Connecticut required lease disclosures checklist.
Create your Connecticut lease agreement
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Create your Connecticut lease agreement →Frequently asked questions
What is the maximum security deposit in Connecticut?
Two months' rent, or one month's rent if the tenant is 62 or older (Conn. Gen. Stat. § 47a-21). The deposit must be held in escrow and earns annual interest at the state deposit-index rate.
How long does a Connecticut landlord have to return a security deposit?
Within 21 days of the tenancy ending, or 15 days after the tenant provides a written forwarding address, whichever is later, with an itemized statement and any interest. Violating the return rules exposes the landlord to twice the deposit (§ 47a-21).
What is the late-fee limit in Connecticut?
No late fee may be charged until rent is 9 days late, and it is capped at the lesser of $5 per day (up to $50) or 5% of the delinquent rent, with only one charge per late payment (§ 47a-15a).
How does eviction notice work in Connecticut?
Connecticut uses a Notice to Quit rather than a 30-day termination notice. Nonpayment requires a 3-day notice to quit after the 9-day grace period, and a no-cause (lapse-of-time) termination also uses a 3-day notice to quit (§ 47a-23).
Does Connecticut require deposit interest?
Yes. The landlord must pay or credit interest to the tenant annually on the tenancy anniversary at the state "deposit index" rate set by the Banking Commissioner (Conn. Gen. Stat. § 47a-21).
Official sources
Primary statutes and official government references for this guide. Statutes change — always confirm against the current official text before you act.