What New Hampshire law says about your deposit
New Hampshire's residential tenancy statutes are direct about deposits, and they favor tenants who know how to use them. N.H. Rev. Stat. Ann. § 540:2-a imposes a strict 30-day return deadline: once the tenancy ends, the landlord must either return the deposit in full or provide a written, itemized statement explaining every deduction, along with any remaining balance. Both things must happen within 30 days. Sending an itemization without the balance, or returning a partial amount without the written accounting, does not satisfy the statute.
Section 540:2-b closes a common landlord escape hatch. Ordinary wear and tear is not a lawful basis for any deduction. Neither is a vague description like "cleaning" or "damage" without written itemization. If the landlord cannot point to a specific, documented cost tied to a specific, lawful category of damage, that deduction is prohibited. The burden to prove a deduction is reasonable sits with the landlord, not with you.
The 30-day window and why it matters
Thirty days sounds like a generous runway. In practice, New Hampshire courts treat an unexplained failure to return within that window as a presumption of bad faith. You don't have to prove that the landlord acted with malicious intent. You just have to show the money wasn't returned and the deadline passed.
The clock starts when the tenancy terminates, which typically means the later of the lease end date or the date you actually vacated and surrendered the keys. Mailing time does not extend the deadline for your landlord. A check postmarked on day 31 is late, full stop.
If day 30 arrives and you have received neither the deposit nor a written itemization, two practical consequences follow immediately. First, the landlord has lost the statutory safe harbor that a timely, properly itemized return would have provided. Second, any demand letter you send now carries the implicit weight of § 540:3 bad-faith penalties, which tend to focus a landlord's attention quickly.
One additional note: New Hampshire requires the tenant to provide written notice of a wrongful retention claim before the full penalty regime attaches. That written notice is, in practical terms, the demand letter itself. Sending a properly drafted letter citing § 540:2-a and § 540:3 satisfies that notice requirement and starts the landlord's cure period.
What you can actually recover
New Hampshire's penalty structure applies to the wrongfully withheld portion, not the full deposit amount. That distinction matters when calculating your demand.
If your deposit was $2,000 and the landlord returned $500 but unlawfully withheld $1,500, your claim looks like this:
- Principal: $1,500 (the wrongfully withheld amount)
- Statutory penalty: up to $3,000 (2× the wrongfully withheld portion under § 540:3)
- Attorney's fees and costs: recoverable if the matter proceeds to court and you prevail
- Total potential recovery: $4,500 before fees
If the landlord returned nothing on a $2,000 deposit, the same math produces a potential recovery of $6,000 before fees, well within the Circuit Court's $10,000 small claims limit.
New Hampshire does not cap the deposit itself. There's no statutory maximum on what a landlord can charge, so disputes occasionally involve large deposits on high-rent properties. The 2× penalty still applies to the wrongfully withheld portion regardless of the deposit amount.
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What you may be owed
Estimate only. Uses your state's return window and bad-faith multiplier. Not legal advice.
Evidence to gather before you send anything
A strong demand letter cites the statute and states the amount owed. The supporting evidence is what prevents the landlord from inventing a plausible-sounding defense after the fact.
Collect these before you send the letter:
- Move-in documentation. Photos, video, or a signed move-in checklist showing the unit's condition when you took possession. Date stamps matter. If you didn't document move-in, gather any text messages, emails, or notes from that period that reference unit condition.
- Move-out documentation. Photos and video of every room taken on the day you returned the keys. Include the oven, under sinks, window tracks, and any area a landlord might later claim was dirty or damaged.
- Proof of deposit payment. A canceled check, bank transfer record, or written receipt signed by the landlord.
- The lease. Including any addenda that specify permitted deductions or cleaning obligations.
- Your forwarding address notice. If you provided a new address in writing at move-out, keep a copy. Landlords sometimes claim they had no address to mail the return to.
- Any correspondence after move-out. Texts, emails, voicemails in which the landlord discusses the deposit, mentions deductions, or fails to respond.
- The absence of a response. If the 30-day window closed and you received nothing, document that. Keep your phone records and inbox showing no itemization arrived.
You don't need all of these to send a demand letter. But the more you have assembled before writing, the more specific and credible your letter becomes, and specificity is what separates letters that get paid from letters that get ignored.
Writing a demand letter that New Hampshire landlords take seriously
New Hampshire demand letters work best when they are short, factual, and cite the statutes by name. Here's what a complete, effective letter contains.
A clear subject line. Something like: "Written Demand for Return of Security Deposit Pursuant to N.H. Rev. Stat. Ann. § 540:2-a and § 540:3." That subject line does two things: it signals that you know the law, and it begins to satisfy the written-notice requirement that activates the penalty provisions.
The factual record. Your full name, the landlord's full name and mailing address, the rental address, your tenancy dates, the deposit amount paid and when, any amount returned so far, and the date you vacated. These facts should read like a timeline, not a grievance.
The statute, quoted or summarized. Cite N.H. Rev. Stat. Ann. § 540:2-a directly. Name the 30-day return requirement. State whether it has been met. If the deadline has passed, say so plainly.
The demand. A specific dollar amount. A specific response deadline, typically 14 calendar days from receipt. A clear statement of what you are demanding: the withheld amount, the statutory penalty available under § 540:3, and any attorney's fees if the matter proceeds.
The consequence. A one-sentence statement that failure to comply will result in a filing in New Hampshire Circuit Court, District Division, for the full amount including the 2× bad-faith penalty and fees. No threats, no adjectives. The statute does the threatening for you.
Your signature. Name, date, and return address for the landlord's response.
Send the letter by USPS Certified Mail. Do not rely on email or text, even if that's how you normally communicate. Certified Mail gives you a date-stamped delivery confirmation that becomes evidence if the matter proceeds to court.
What landlords get wrong, and how it helps your case
New Hampshire tenants who know § 540:3 have a meaningful advantage, because landlords routinely make errors that courts read as bad faith. The most common:
Missing the 30-day deadline entirely. No check, no itemization, no contact. Courts treat complete silence as strong evidence of bad-faith retention. Your demand letter, sent after day 30, is almost always sufficient to establish that the landlord had written notice and still failed to cure.
Itemizing wear and tear as damage. Charging for paint touch-ups at the end of a multi-year tenancy, replacing carpet that was already past its useful life, or billing for "general cleaning" with no documented condition difference from move-in are all prohibited deductions under § 540:2-b. Landlords who itemize these costs often don't expect a tenant who has move-in photos.
Sending an itemization but keeping the balance. Mailing a list of deductions without the remaining check does not satisfy § 540:2-a. The statute requires both the written accounting and the return of any balance. Half-measures don't work.
Claiming costs that exceed actual damage. A landlord who charges $800 to repaint a single wall, or invoices $600 for a cleaning service when the unit was professionally cleaned at move-in, is vulnerable to a bad-faith finding if those numbers aren't supported by actual receipts.
Each of these errors gives your demand letter additional traction. A landlord facing a well-documented § 540:3 claim, with documented evidence that the deduction was improper, frequently pays in full rather than face a court appearance where the burden of proof is on them.
If the letter doesn't resolve it
If your deadline passes without payment or a written response, file a New Hampshire small claims case for your withheld deposit in the Circuit Court, District Division, where the $10,000 claim limit covers nearly every residential deposit dispute including the full 2× penalty.
New Hampshire's small claims process is designed for self-represented plaintiffs. Filing fees are low. Attorneys cannot represent a landlord at the initial small claims hearing, which puts you on equal footing even against a property management company. And because § 540:3 makes attorney's fees recoverable if you prevail, the cost of pursuing the claim is almost always justified by the potential recovery.
What to expect after you send the letter
Most demand letters sent under New Hampshire's deposit statutes produce one of three responses within the 14-day window.
Payment in full. This is the most common outcome. The landlord, now aware that they are exposed to a 2× penalty and attorney's fees, sends a check for the withheld amount. Sometimes with a brief explanation, sometimes with no comment at all. Either way, you've recovered what you were owed without going near a courthouse.
A partial payment or counteroffer. The landlord acknowledges owing something but disputes part of the deduction. At this point, you have a documented offer to work from. Evaluate whether the remaining dispute is worth a small claims filing based on the amount and the strength of your evidence.
No response. Silence after the deadline gives you a clean path to the Circuit Court. Keep the certified mail tracking confirmation. Keep a copy of the letter. Those two documents, combined with your deposit payment record and the absence of a timely itemization from the landlord, are frequently enough to support a default judgment.
Response time varies. Some landlords pay within 48 hours of receiving the letter. Others wait until the deadline day. A small number don't respond at all, which is actually a useful outcome: it eliminates any ambiguity about whether the court filing is warranted.