Connecticut Security Deposit Law (Statute Explained)

Source-based guide to Connecticut security deposit law, including the cited statute sections and the key rules on deadlines, deductions, interest, and tenant protections.

This page is the dense version.

If you want the legal source material behind Connecticut security deposit rules, and not just the plain-English summary, start here.

This page is built around the approved source material for this build and the rules that matter most in real security deposit disputes.

If you want the simpler version first:

Plain-English Law Overview

The Main Connecticut Sources

If you want to go straight to the official and source-backed material, these are the key places to start:

Which statute section applies?

The approved Connecticut source for this build cites:

Conn. Gen. Stat. section 47a-21

This is the main section used throughout the Connecticut pages on this site.

Because the approved source does not provide a broader Connecticut source map beyond Chapter 831 and section 47a-21, this page stays anchored to that material and does not expand beyond it.

The rules that matter most

Once you get past the legal wording, most disputes still come down to a few core rules:

there is a timing rule tied to 21 days after termination, or 15 days after written forwarding-address notice if later
accrued interest matters
deductions are framed as damages tied to the tenant's obligations
written itemization matters if money is withheld
the paperwork and timeline matter a lot

That is the legal backbone behind most of the site.

1. The timing rule

One of the biggest Connecticut rules is the timing structure around return of the deposit.

Under the approved source, Connecticut generally requires return of the deposit plus accrued interest within:

21 days after termination, or
15 days after the landlord receives the tenant's written forwarding address if that is later

That timing structure is one of the most important parts of the claim.

For practical use, the renter should preserve the termination date, possession-delivery proof, and any written forwarding-address proof. Those facts control how cleanly the deadline can be shown.

Read the deadline rule in plain English

2. Forwarding-address notice changes timing

The approved Connecticut source says not to treat a forwarding address as a strict precondition.

Instead, it changes the timing only if it is sent.

That is why Connecticut pages on this site treat written forwarding-address proof as a key fact without turning it into an absolute requirement in every case.

3. Interest and escrow rules

The approved Connecticut source also says:

the deposit remains the tenant's property and is exempt from landlord creditors
the landlord must immediately deposit the full amount into escrow and give bank-identifying notice within 30 days
interest must be paid annually or credited to the next rent payment, and paid within 21 days if the tenancy ends earlier
the annual Connecticut interest rate is calendar-year specific and should be updated before calculating precise interest for later years

This does not come up in every dispute, but it is part of the approved source material.

4. Deposit caps depend on age

The approved Connecticut source says:

Connecticut generally caps the deposit at 2 months' rent for tenants under age 62
Connecticut generally caps the deposit at 1 month's rent for tenants age 62 or older
a tenant who turns 62 may request return of the excess over the lower cap

That is one reason the tenant's age when the deposit was collected can matter.

5. Deductions are framed narrowly

The approved Connecticut source says a landlord may withhold for damages suffered because of the tenant's failure to comply with the tenant's obligations.

The source notes also say to frame deductions as damages tied to tenant obligations under the statute rather than overgeneralizing beyond the statutory text.

See the deduction framing: What Can a Landlord Deduct in CT?

6. Remedy structure

The approved Connecticut source says:

if the Connecticut deadline has passed and the landlord still has not returned the deposit plus accrued interest or sent a compliant written itemization, the landlord may face liability for twice the amount of the security deposit
if the only violation is unpaid accrued interest, the statute provides a smaller penalty

That remedy structure is one of the biggest reasons the timeline matters so much. Double-deposit liability is the main leverage point when the landlord misses the deposit-plus-interest and itemization rule; the interest-only penalty should stay separate.

7. Successor-landlord issue

The approved Connecticut source also notes that a successor landlord can become liable for return of the deposit by operation of law.

That does not come up in every case, but it is part of the source-backed Connecticut framework.

8. The court-stage source material now linked here

The updated Connecticut source also points to official materials for the filing stage:

a Connecticut General Assembly report on small claims jurisdiction and transfers
the Connecticut statute chapter that includes the small-claims entry fee

The approved source also says Connecticut security-deposit claims are commonly filed in the small claims session of Superior Court, that small claims generally applies to money-damages cases up to $5,000, and that the current small-claims entry fee is $95.

That does not turn this page into a full filing manual.

It does mean the Connecticut source now gives you an official starting point for the next stage, instead of leaving that part completely open-ended.

9. Why the source material can still feel intimidating

If you go straight to the statute material, you will notice what most renters notice:

the wording is dense
the rules are there, but not always easy to apply to a real move-out situation
the timeline and paperwork still have to be organized correctly

That is normal.

The law gives you the framework, but it usually does not tell you:

what to say first
how long to wait
how to follow up
when the situation is actually strong enough to push harder

That is where people tend to get stuck.

10. Why this page still matters

If you want to dig into the law directly, go for it.

That is what this page is for.

But most deposit disputes are not lost because the cited statute does not exist. They are lost because:

the tenant does not know which rule matters most
the timing is off
the documentation is weak
the communication is unclear

So there are really two levels here:

Level 1: Source material

You read the cited statutes and approved source notes yourself.

Level 2: Practical use

You figure out how to apply that material in the right order, with the right timing, and with enough documentation to make it matter.

That second part is usually harder than just finding the law.

If the landlord did not follow the law

If the deadline was missed, the deductions were weak, or the deposit was not returned properly, your next step is usually not more reading.

It is taking the law you already have and using it.

Start here:

TL;DR

If you want the Connecticut source material used on this site, start with:

Chapter 831
section 47a-21
the small-claims jurisdiction report
the Connecticut small-claims fee statute material

That is the legal backbone.

But most people do not get stuck finding the law.

They get stuck turning it into a clean process:

knowing which rule matters first
knowing what to send
knowing when to follow up
knowing when they are actually in a strong position

If you want the law, it is above.

If you want the law turned into a usable process, that is where the system helps, by taking all of this and putting it into the right order.

See the Connecticut Recovery System

Important

This page provides general educational information and is not legal advice. For the official text and court resources, use the Connecticut links above.