Main deadline30 days
Return and covered damage documentation fit inside this period.
If damages are deducted
The landlord must provide within the 30-day period a detailed sworn list of damages and written evidence of actual or estimated costs such as estimates, bills, invoices or receipts.
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Educational information only. Massachusetts security-deposit rules are detailed and local/housing-specific facts can matter. This page does not provide legal advice.
Official sources
Massachusetts LegislatureMassachusetts General Laws c.186 § 15B ↗
Primary law for security-deposit amount, receipts, statement of condition, banking, interest, deductions and 30-day return.
Mass.govSecurity deposits and last month’s rent ↗Official Massachusetts consumer guidance on deposit limits, banking, interest and move-out deductions.