Milwaukee Renter Guides · Milwaukee, WI

Wisconsin Security Deposit Law: 21 Days, Double Damages and the Check-In Sheet

21 days. Wis. Stat. § 704.28(4) and Wis. Admin. Code § ATCP 134.06(2) both require a Wisconsin landlord to deliver or mail your full deposit, less lawful withholdings, within 21 days. If anything is withheld, the administrative rule — ATCP 134.06(4) — separately requires an itemized written statement inside that same window. Normal wear and tear is not deductible. And the enforcement clause is unusually sharp: a tenant who loses money because of a violation of ATCP 134 may sue directly and recover twice the loss, plus costs and reasonable attorney fees.

The 21-day rule: when the clock starts and what must be sent

The deadline appears twice in Wisconsin law — in the statute and in the consumer-protection rule — with the same number. This is the rule's wording, ATCP 134.06(2); the statute, Wis. Stat. 704.28(4), reads the same except that it cross-references its own withholding subsections:

A landlord shall deliver or mail to a tenant the full amount of any security deposit paid by the tenant, less any amounts that may be withheld under sub. (3), within 21 days after any of the following…

The "following" is the part people get wrong, because the start date depends on how the tenancy ended, not on when you handed back the keys:

Read row two closely: leaving early does not start the clock early. If your lease ran to April 30 and you left March 1, the 21 days run from April 30 unless someone else moves in sooner.

One definition catches a lot of money that renters do not think of as a deposit. Under the rule, "Security deposit" means the total of all payments and deposits given by a tenant to the landlord as security for the performance of the tenant's obligations, and includes all rent payments in excess of 1 month's prepaid rent. Paid first, last and security up front? Everything past one month of prepaid rent is legally a security deposit and rides the same 21-day clock.

The check-in sheet: your seven-day right to inspect and document

Wisconsin gives you two overlapping documentation rights at move-in, and both run on a seven-day clock.

The statutory check-in sheet. Wis. Stat. § 704.08: "A landlord shall provide to a new residential tenant when the tenant commences his or her occupancy of the premises a check-in sheet that the tenant may use to make comments, if any, about the condition of the premises. The tenant shall be given 7 days from the date the tenant commences his or her occupancy to complete the check-in sheet and return it to the landlord." It is required for new tenancies, not renewals.

The pre-deposit notice. Separately, ATCP 134.06(1) requires that before a landlord accepts a security deposit, the landlord must notify you in writing that you may inspect the unit and report preexisting damages or defects by a stated deadline — and that deadline may be no less than 7 days after the start of tenancy.

There is a third right almost nobody uses. You may ask for the list of damages the landlord charged against the previous tenant's deposit, and the rule sets the turnaround: "The landlord shall provide the list within 30 days after the landlord receives the request, or within 7 days after the landlord notifies the previous tenant of the security deposit deductions, whichever occurs later." If the same scuffed floor was charged to the last three tenants, that list is how you find out.

Practical version: photograph every room, every appliance, the furnace, the water heater, the window locks and every existing mark, with the date on. Write them on the check-in sheet anyway — photos prove condition, the sheet proves you reported it.

What a Wisconsin landlord may deduct, and what counts as ordinary wear

The permitted list is closed, and short. Under Wis. Stat. § 704.28(1) and the parallel rule, a landlord may withhold only what is reasonably necessary to pay for:

• Tenant damage, waste, or neglect of the premises;
• Unpaid rent for which the tenant is legally responsible;
• Utility service the landlord provides under the rental agreement but that is not included in rent;
• Direct utility service from a government-owned utility, to the extent the landlord becomes liable for the tenant's nonpayment;
• Unpaid monthly municipal permit fees assessed against the tenant under Wis. Stat. § 66.0435(3), to the extent the landlord becomes liable;
• Anything in a valid "nonstandard rental provisions" document.

That last one deserves its own paragraph, because it is the loophole with rules attached. § 704.28(2) allows extra withholding reasons only if they are given to you in a separate written document titled "NONSTANDARD RENTAL PROVISIONS," and only if the landlord "specifically identif[ies] each nonstandard rental provision with the tenant before the tenant enters into a rental agreement." If you sign or initial next to one, the law creates a rebuttable presumption that it was identified to you and that you agreed. So: read that document, and do not initial a line you have not had explained.

And the outer limit, at § 704.28(3): the section "does not authorize a landlord to withhold any amount from a security deposit for normal wear and tear, or for other damages or losses for which the tenant cannot reasonably be held responsible under applicable law." The official note to the administrative rule is more concrete — routine painting and routine carpet cleaning are not chargeable against the deposit without unusual damage due to tenant abuse. Read that note to the end, though, because it carries its own exception: a lease may contain a provision requiring the tenant to pay for routine carpet cleaning (the note cites OAG 4-13). What the landlord may not do is collect it in advance — any prepayment over one month's rent is itself a security deposit — or take it out of the deposit at move-out. It is a separate charge you can be asked to pay, not a deduction.

Disclosures a landlord owes you before taking any money

These come due before a lease is signed or any earnest money or deposit is accepted, and they are frequently skipped:

• Known, uncorrected code violations. The landlord must disclose any building or housing code violation that the landlord has actual knowledge of, that affects the unit or a common area, that constitutes a significant threat to health or safety, and that has not been corrected.
• Heat that cannot hold 67°F. Among the conditions requiring disclosure: heating facilities that are not in safe operating condition or are "not capable of maintaining a temperature, in all living areas of the dwelling unit, of at least 67° F (19° C) during all seasons of the year in which the dwelling unit may be occupied." In a Milwaukee winter that is not a technicality.
• Who the landlord actually is. The landlord must disclose in writing who collects rent and manages, and the owner or the person authorized to accept service of legal process — at "an address within the state at which service of process can be made in person." Changes must be disclosed within 10 business days. This does not apply to owner-occupied buildings of four units or fewer.

That in-state address is worth writing down on day one. It is the address you will need if you ever have to sue, and hunting for it after a dispute starts is how people miss deadlines.

Forwarding address: how to make sure the check can reach you

Here is an honest reading of the text. Neither § 704.28(4) nor ATCP 134.06(2), as written, makes the 21-day clock depend on your supplying a forwarding address — the obligation is to "deliver or mail" within 21 days of a date fixed by how the tenancy ended. But a rule that is satisfied by mailing to your last known address is cold comfort if that address is the unit you just left.

So do the boring thing: give the forwarding address in writing, dated, to the person the landlord disclosed as the one who manages the property, keep a copy, and file a change of address with the postal service as well. If you moved out under pressure, send it by a method that produces a receipt. When a deposit dispute reaches small claims, the tenant who can show a dated written forwarding address is in a very different position from one who cannot.

If the deposit is late or the deductions are wrong: your written demand

If any part of the deposit is withheld, the landlord must, within the same 21 days, deliver or mail a written statement that "describe[s] each item of physical damages or other claim made against the security deposit, and the amount withheld as reasonable compensation for each item or claim." Falsifying a claim is prohibited outright. A lump-sum "damages — $600" is not a statement; it is a missing statement with a number on it.

Your demand letter should be short and boring, and should do four things: state the move-out date and which of the three start-date rules applies; state the amount paid and the amount returned; identify each disputed item and why it is normal wear or not yours; and set a specific date by which you expect payment. Attach your move-in photos and the check-in sheet. Send it to the disclosed in-state address, keep proof of mailing, and give it a real deadline.

Double damages and attorney fees under Wis. Stat. § 100.20(5)

This is why Wisconsin deposit disputes settle. The remedy is in the statute, and the chapter's own explanatory note states it in one sentence:

A person who suffers a monetary loss because of a violation of this chapter may sue the violator directly under s. 100.20 (5), Stats., and may recover twice the amount of the loss, together with costs and reasonable attorneys' fees.

Double the loss, plus costs, plus reasonable attorney fees — which is what makes a $700 deposit case worth a lawyer's time.

One qualification, because a flat "you get double" overstates it. Wisconsin's court of appeals has drawn a line based on whether the landlord gave you the accounting at all. Where the landlord did comply with the notice and accounting requirements, a double-damages award is subject to offset for the landlord's own actual damages; the award of double the whole deposit regardless of the landlord's damages is what applies when the landlord failed to provide the accounting (Pierce v. Norwick, 202 Wis. 2d 587 (Ct. App. 1996)). And you still have to prove a pecuniary loss: a code violation with no money lost does not support recovery under sub. (5).

There is also a criminal edge to the statement requirement. In State v. Lasecki, 2020 WI App 36, 392 Wis. 2d 807, the court of appeals held that a landlord has sufficient notice that failing to give a tenant a statement of withholdings after keeping part of a deposit — the duty imposed by ATCP 134.06(4) — can be a violation of Wis. Stat. § 100.20 as an unfair business or trade practice, and can therefore be criminally prosecuted under § 100.26(3); the scheme is not unconstitutionally vague. The same decision cuts the other way on money: it held that a criminal court may not order the sub. (5) double damages as restitution, because restitution compensates actual loss rather than punishes.

None of that is automatic. You still have to prove the loss and the violation, which brings us back to photographs, the check-in sheet, and the dated demand letter.

Small claims in Milwaukee County: filing, cost and timeline

Deposit cases are small claims cases, filed in the circuit court for the county where the rental sits — Milwaukee County for a Milwaukee rental. Two numbers are changing right now, and if you read an older guide you will get both of them wrong:

Because the double-damages remedy multiplies your claim, check your arithmetic against the limit before filing — a $2,000 deposit dispute can carry a much larger demand once doubling, costs and fees are added.

On timing, small claims moves faster than ordinary civil litigation by design. For context on the same chapter's pace: where the defendant is served in Wisconsin, the return date on an eviction summons must be not less than 5 nor more than 25 days from issue, with service at least 5 days before the return date; for other small claims matters the range is 8 to 30 days, with service at least 8 days before. A summons served on someone outside Wisconsin gets a longer minimum. Expect a first appearance within weeks, not months.

Complaints to Wisconsin DATCP and to the City of Milwaukee

ATCP 134 is a consumer-protection rule, and the agency behind it is the Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP). Its own landlord/tenant complaint form states the point directly: ATCP 134 contains the rules applicable to residential rental agreements and landlord-tenant relations, those rules were promulgated under Wis. Stat. § 100.20(2), and "DATCP is responsible for administering and enforcing those laws."

DATCP publishes a dedicated LANDLORD/TENANT complaint form (DTCP-BCP-003, rev. 09/2025) rather than making you use the general one. The contact block on the form:

• Bureau of Consumer Protection, 2811 Agriculture Drive, PO Box 8911, Madison, WI 53708-8911
• Phone (800) 422-7128 · Fax (608) 224-4677 · TTY: dial 711 or (800) 947-3529
• Email DATCPHotline@wisconsin.gov

The form also warns that it is subject to Wisconsin's Public Records Law, so write it as a document that could be read by others. Filing a complaint is separate from suing — the double-damages remedy is a private action you bring yourself.

As for the city: we are not publishing a City of Milwaukee deposit complaint procedure, because we could not open and verify the city's own pages. There is also a structural reason to start with the state. Wis. Stat. § 66.0104 provides that no city, village, town or county "may enact an ordinance that places requirements on a residential landlord with respect to security deposits or earnest money or pretenancy or posttenancy inspections that are additional to the requirements under administrative rules related to residential rental practices." On deposits and move-in/move-out inspections, the state rule is the rule.

If your last rental was on the Ohio side, the rules are genuinely different — 30 days rather than 21, with a different remedy. See Ohio security deposit law and how to get your security deposit back in Ohio.

This article is general information about Wisconsin landlord-tenant law, not legal advice. Statutes and administrative rules change — two of the small claims figures cited here are themselves scheduled to change in late 2026 and early 2027 — and individual situations vary. Consult the cited sources, DATCP, or a qualified Wisconsin attorney before acting. Rent Finder Cleveland is an equal housing opportunity provider.