How do you handle a storage tenant who is late on rent?

North Carolina General Statutes § 66-306 prohibits charging a late fee until the payment is five or more days late.

What you can legally do, and when, depends on your rental agreement and your state's self-storage statute.

What do you need in place before you act?

Pull the signed rental agreement and read the late-fee clause. If the clause is missing, vague, or not formatted correctly, you may not be able to collect the fee at all.

Arizona Revised Statutes § 33-1703(B) requires the agreement to disclose the due date, when the late fee accrues, and the consequences of nonpayment in at least 10-point bold-faced type. North Carolina General Statutes § 66-305 requires bold type of at least 14-point size for the same disclosures. Your state may have a similar formatting rule, and the requirement is not optional.

Under Michigan's Self-Service Storage Facility Act, MCL Act 148 of 1985, § 570.523, the owner bears the burden of justifying any late fee as reasonable and not a penalty. That means your fee amount needs to be defensible on its face, not just disclosed.

Also confirm you have a current mailing address and email for the tenant. You will need both for the notice sequence that follows.

What is the step-by-step workflow once rent is late?

1. Check the grace period your state requires before assessing a late fee. Maine's Self-Service Storage Act provides a mandatory three-day grace period: if the tenant pays in full by the third day after the due date, you cannot charge a late fee. North Carolina General Statutes § 66-306 sets five days as the minimum before a fee may be imposed. Your state statute sets this window; your agreement cannot shorten it below whatever the statute requires.
2. Assess the late fee on the correct day and document the date and amount in your ledger. North Carolina General Statutes § 66-306 caps the fee at $15 or 15 percent of the monthly rent, whichever is greater. If you operate in a capped state, confirm the math before posting the charge.
3. Send a written late notice the same day you assess the fee. Include the balance due, the date the fee was applied, and the date by which you will restrict access. Keep a copy with a delivery timestamp.
4. Overlock the unit no earlier than state law permits. Under Michigan's Self-Service Storage Facility Act, MCL Act 148 of 1985, § 570.523(1), the earliest lawful overlock is five days after the due date. Michigan sets that floor explicitly; operators in other states must check their own state's self-storage statute for the equivalent provision, because the timing varies and your agreement alone does not set it.
5. Send a lien notice by the method your state statute specifies, typically certified mail to the last known address. Arizona Revised Statutes § 33-1703(A) establishes the lien automatically from the date rent is unpaid and due, covering rent, late fees, labor, and other charges, with no separate filing required. Washington RCW Chapter 19.150 covers the same categories but explicitly states that a late fee is not interest on a debt and is not a recoverable expense under lien-enforcement provisions. Keep late fees as a separate line item in your ledger; operators who lump them into lien costs risk losing them entirely when the sale is settled.
6. Log every contact attempt: calls, texts, emails, and office visits. Note the date, time, and outcome.
7. If the tenant pays in full at any point before the lien sale closes, release the overlock immediately and cancel any scheduled auction. Missouri Revised Statute § 415.425 gives the tenant an absolute right to redeem stored property by paying all outstanding rent and fees before the sale is completed.

What should be on your documentation checklist?

• Signed rental agreement with compliant late-fee language and correct type size
• Date rent was due and date it was not received
• Date and amount of late fee assessed, with confirmation the grace period had closed
• Evidence the fee amount is reasonable and not a penalty, as required under Michigan's Self-Service Storage Facility Act, MCL Act 148 of 1985, § 570.523, if you operate in Michigan
• Copy of the written late notice with delivery timestamp
• Date and time the overlock was applied
• Log of every contact attempt with outcome
• Late fees recorded as a separate line item, never combined with lien costs
• Copy of the lien notice and proof of mailing
• Record of any partial payments received and applied
• Date and method of any full payment that stops the process

What does a late-payment sequence look like in practice?

Hypothetical example: a tenant in Michigan misses the first of the month. On day six you assess a late fee your agreement discloses in bold type, and you confirm the amount is defensible as reasonable under Michigan's Self-Service Storage Facility Act, MCL Act 148 of 1985, § 570.523. You send a written notice that day and overlock the unit, which is lawful because five days have passed under § 570.523(1). You record the late fee as its own line item, separate from any lien costs. On day twelve the tenant pays the full balance including the late fee. You remove the overlock the same day and note the payment date and time in the ledger. Because every step was documented and timed correctly, the fee is collectible and the file is clean if the tenant later disputes the charge.

What mistakes cost operators money?

Charging a late fee before the grace period ends is the most common error. In North Carolina, doing so means you cannot collect the fee or attorney fees at all, under G.S. § 66-307.

Applying a fee that exceeds the state cap is the second. Eight states, including Arizona, California, North Carolina, and Maine, set specific caps or ground rules on late-fee amounts. Operators in uncapped states are still bound by whatever dollar figure the agreement states.

Overlocking before the statutory minimum is a third. Michigan's Self-Service Storage Facility Act sets five days as the floor under § 570.523(1). Overlocking earlier, even if your agreement permits it, does not make it lawful.

Lumping late fees into lien costs in Washington is a distinct financial risk. Washington RCW Chapter 19.150 explicitly states that a late fee is not interest on a debt and is not a recoverable expense under lien-enforcement provisions. If you combine late fees with lien costs in your ledger and the sale is contested, you may lose the late-fee amount entirely. Keep them on separate lines from day one.

In Michigan, failing to document why your fee is reasonable exposes you to a challenge. Michigan's Self-Service Storage Facility Act, MCL Act 148 of 1985, § 570.523, places the burden of justifying the fee on the owner, not the tenant.

How do you know where to look for your state's overlock and grace-period rules?

Michigan and North Carolina name their rules explicitly in statute. For every other state, look for your state's self-storage act or self-service storage facility act. Most states have one. The statute will name the grace period before a late fee is lawful, the earliest date an overlock is permitted, and the notice requirements before a lien sale. If your state has no dedicated statute, your rental agreement governs, but you are still subject to general contract and consumer-protection law. When the statute is silent on a specific point, document your reasoning and keep it in the file.

What should you do next?

1. Pull three recent late-payment files and confirm the rental agreement in each one has the correct bold-type disclosure required by your state's statute.
2. Write down the exact grace period, late-fee cap, and earliest overlock date your state law sets, and post it where staff can see it.
3. If you operate in Michigan, add a note to your late-fee assessment step requiring you to document why the fee amount is reasonable and not a penalty, as required by Michigan's Self-Service Storage Facility Act, MCL Act 148 of 1985, § 570.523.
4. Create a one-page notice template that includes the balance due, the fee date, and the overlock date, and date-stamp every copy you send.
5. Separate late fees from lien costs in your ledger starting with the next delinquency, particularly if you operate in Washington under RCW Chapter 19.150.
6. Review your late-fee amount against your state's cap if you operate in a capped state, and adjust your agreement before the next move-in if the number is out of compliance.