Suing for Unpaid Rent in Massachusetts Small Claims Court

Rent disputes are one of the most common reasons people end up in Massachusetts small claims court. A tenant who moved out owing months of back rent, a roommate who stopped paying their share, or a landlord who overcharged and will not refund the difference can bring a money claim. The standard $7,000 limit applies to the base claim amount; statutory multiple damages or fees can increase a final judgment.

Small Claims vs. Eviction: Different Courts, Different Purposes

A critical distinction first: small claims court handles money judgments only. If you are a landlord trying to remove a tenant who is still living in the unit, you need summary process (eviction) in District Court or Housing Court — not a small claims case. Small claims is for recovering money after the tenancy has ended or while the tenant remains but you want a money judgment for past-due amounts.

If you are a tenant suing a landlord for overcharged rent, illegal fees, or retaliation-related damages, small claims or Housing Court are both options.

Where to File

You have venue choices:

• District Court — file in the division where you or the defendant lives or works
• Housing Court — has concurrent jurisdiction over disputes arising from residential tenancy, which covers most rent cases
• Boston Municipal Court — if the property is in the City of Boston

Housing Court is often the better venue for rent disputes because the clerk-magistrates there handle landlord-tenant matters daily and are familiar with the statutory framework.

Suing a Former Tenant for Back Rent

As a landlord filing for unpaid rent:

1. Calculate the exact amount owed. Add up each month of unpaid rent, minus any security deposit you already applied (following the proper deduction procedure under M.G.L. c. 186, § 15B). Do not include late fees without confirming that the lease and applicable law allow them.

2. Gather your lease and payment records. Bring the signed lease, a ledger showing rent due and payments received, any bounced check notices, and copies of communications where you asked for payment.

3. Send a demand letter first. State the total balance, the period it covers, and give a deadline to pay. Keep proof of mailing.

4. File the Statement of Small Claim. Name the tenant under their full legal name at their current address — not the rental address if they have moved. If you are filing as a commercial plaintiff (meaning this is rental income from your trade or business), you must also submit the Verification of Defendant's Address form (MA-DC-SC-7). Without it, the court cannot enter a default judgment if the tenant does not show up.

Suing a Roommate

Roommate disputes are trickier because the legal relationship depends on your arrangement:

• If you are both on the lease, you are co-tenants. One roommate cannot evict the other through small claims, but you can sue for their unpaid share of rent.
• If you are the leaseholder and the roommate is your subtenant, the same framework applies — but your claim is based on the sublease or oral agreement between you.
• If there is no written agreement, you can still sue based on an oral contract. Text messages, Venmo payment history, and email discussions about splitting rent all serve as evidence of the arrangement.

The challenge in roommate cases is proving the agreed-upon amount. A signed roommate agreement is ideal; a pattern of equal payments documented through bank transfers is the next best thing.

Suing a Landlord for Overcharged Rent

If your landlord charged illegal fees, failed to return a rent overpayment, or collected rent on a unit with serious code violations (where the implied warranty of habitability reduced the unit's value), you can file in small claims. Tenants suing landlords over rent-related issues may also have claims under Chapter 93A if the landlord's conduct was unfair or deceptive — which requires a 30-day demand letter before filing.

What to Bring to the Hearing

For any rent dispute, the clerk-magistrate wants to see:

• The lease or rental agreement (or evidence of oral terms)
• A payment history showing what was paid and what is outstanding
• Your demand letter and proof it was sent
• Any relevant communications (emails, texts)
• Three copies of everything

The Massachusetts small claims filing guide covers the full process from demand letter through judgment collection, including how to handle cases where the other party does not show up.

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