Massachusetts Security Deposit Limits: How Much Can a Landlord Charge?

Yes. Security deposits in Massachusetts are always refundable. Under § 15B, the landlord may only deduct for: (1) unpaid rent, (2) real damage beyond normal wear and tear (with itemization), and (3) unpaid water charges. The landlord must return the balance within 30 days of move-out. Any failure to comply — including missing the 30-day deadline — entitles you to treble (3×) damages.

Yes. If a landlord collects last month's rent upfront, it must be deposited in a separate, interest-bearing escrow account at a Massachusetts bank, and the tenant must receive a receipt with the bank name, address, and account number — the same requirements as the security deposit. The landlord must pay interest on the last month's rent annually. Many landlords are unaware of this requirement.

No. Massachusetts law does not permit landlords to collect any deposit or fee specifically for pets. The one-month security deposit cap under § 15B is the absolute maximum — there is no carve-out for pets, furnished units, or any other category. A "pet deposit," "pet fee," or "pet rent" collected as a lump sum at signing is likely illegal.

Only three things: (1) unpaid rent, (2) damage to the unit beyond normal wear and tear — documented with an itemized list and receipts, and (3) unpaid water charges if the tenant was responsible. The landlord must provide the itemized deduction statement within 30 days of move-out. Deductions for normal wear and tear (e.g., minor scuffs, faded paint, worn carpet) are not permitted.

You are entitled to treble (3×) damages — meaning three times the full deposit amount. Massachusetts courts have consistently enforced this penalty even when the landlord eventually returned the deposit late. Send a written demand letter via certified mail citing § 15B and the missed deadline.