Massachusetts Security Deposit Demand Letter Template

If your Massachusetts landlord hasn't returned your security deposit within 30 days of your move-out date, a formal demand letter is your most effective next step. It puts your landlord on notice that you know your rights under Mass. Gen. Laws ch. 186, § 15B, creates a paper trail for court, and resolves most disputes without ever filing a lawsuit.

Massachusetts Law Quick Reference

Return Deadline30 days
PenaltyTreble (3x) damages (strict liability — no bad faith required), plus interest, court costs, and attorney's fees

What to Include in Your Massachusetts Demand Letter

1Your full name and current address
2The rental property address
3Your move-out date
4The deposit amount paid
5The 30-day deadline and the specific date it expired
6Citation of Mass. Gen. Laws ch. 186, § 15B
7A clear statement of the amount demanded
8A deadline for response (typically 7-14 days)
9A statement that you will pursue legal action if not resolved

Tips for an Effective Demand Letter in Massachusetts

Generate Your Free Massachusetts Demand Letter

Use our free generator to create a demand letter customized with Massachusetts's specific laws, deadlines, and penalties.

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What Happens After You Send the Letter

1Most landlords respond within 7-14 days of receiving a formal demand letter
2If they return the deposit, make sure to get a receipt confirming the amount received
3If they don't respond, you can file in small claims court — your demand letter and certified mail receipt serve as evidence