Wisconsin mechanics lien deadlines

4 deadlines NoticeGuard models for Wisconsin: what each one counts from, the statute it was read from, and the statute text.

Information, not legal advice. This app reports what the statute says and cites the section it read. It is not legal advice, it does not file anything for you, and it does not tell you what to do.
Verify with the statute or an attorney. Statutes change, and courts reinterpret them. Every deadline in this app comes from a statute read on the date shown next to its citation - that snapshot can go out of date. Missing a mechanics lien deadline can extinguish your claim permanently, so confirm any deadline you are relying on with an attorney licensed in that state before you act on it.
Data verified: statute text retrieved 2026-09-21 (each citation below carries its own date). Rule data from the NoticeGuard app, source commit 22f9300.

Deadlines at a glance

DeadlineCounted fromApplies toStatute
Prime contractor's notice to owner10 days after first furnishing (commenced work)Original contractor
only when you tick "This project is wholly residential with 4 or fewer family living units"
Wis. Stat. § 779.02 (2)(a)
Subcontractor's or supplier's notice to owner60 days after first furnishing (commenced work)Subcontractor, Supplier, Preconstruction serviceWis. Stat. § 779.02 (2)(b)
File the claim for lien180 days after last furnishing (last day on site)Original contractor, Subcontractor, Supplier, Preconstruction serviceWis. Stat. § 779.06 (1)
Commence an action to enforce the lien730 days after notice of construction lien recordedOriginal contractor, Subcontractor, Supplier, Preconstruction serviceWis. Stat. § 779.06 (1)

Work out a date for Wisconsin with the calculator

Each deadline, with the statute

Prime contractor's notice to owner

Given to the owner - either included in a written contract with a copy provided, or, if there is no written contract, served separately within 10 days of the prime contractor's own first furnishing. Only required on a wholly-residential project of 4 or fewer family living units - but on such a project, missing it can forfeit the PRIME CONTRACTOR'S OWN lien rights, not just a downstream party's.

What it counts from. 10 days after first furnishing (commenced work).

Applies to. Original contractor (when you tick "This project is wholly residential with 4 or fewer family living units").

Wis. Stat. § 779.02 (2)(a)
Official source · statute text retrieved 2026-09-21

“Every prime contractor who enters into a contract with the owner for a work of improvement on the owner's land and who has contracted or will contract with any subcontractors, suppliers, or service providers to perform, furnish, or procure labor, services, materials, plans, or specifications for the work of improvement shall include in any written contract with the owner the notice required by this paragraph, and shall provide the owner with a copy of the written contract. If no written contract for the work of improvement is entered into, the notice shall be prepared separately and served on the owner or authorized agent within 10 days after the first labor, services, materials, plans, or specifications are performed, furnished, or procured for the improvement by or pursuant to the authority of the prime contractor.”

If the date is missed (the statute's own terms). Confirmed from § 779.02(2)(c): "If any prime contractor required to give the notice... fails to give notice as required, the prime contractor does not have the lien and remedy provided by this subchapter" - a total forfeiture of the PRIME CONTRACTOR'S OWN lien rights, not merely a downstream party's - unless a narrow fallback is met (full payment to every subcontractor/supplier/service provider within the § 779.06 time periods, and either none of them asserts a lien or all fully waive lien rights). See `limitations`.

Also stated next to this deadline.

Subcontractor's or supplier's notice to owner

Served on the owner or authorized agent, counted from the day this claimant first performed, furnished, or procured labor, services, materials, plans, or specifications.

What it counts from. 60 days after first furnishing (commenced work).

Applies to. Subcontractor, Supplier, Preconstruction service.

Wis. Stat. § 779.02 (2)(b)
Official source · statute text retrieved 2026-09-21

“Every person other than a prime contractor who performs, furnishes, or procures labor, materials, plans, or specifications for an improvement shall have the lien and remedy under this subchapter only if within 60 days after performing, furnishing, or procuring the first labor, services, materials, plans, or specifications the person serves a written notice, in 2 signed copies, on the owner or authorized agent at the last-known post-office address.”

If the date is missed (the statute's own terms). A claimant who misses this deadline "shall have no lien... to which the failure relates" (§ 779.02(3)) for work furnished before the owner actually receives notice - but a late notice still preserves the lien for labor or materials furnished AFTER the owner actually receives it, with the burden of proving that timing on the claimant. Not an all-or-nothing forfeiture the way the prime contractor's missed notice is.

Also stated next to this deadline.

File the claim for lien

Filed with the clerk of circuit court for the county where the land lies, counted from this claimant's own last labor, services, materials, plans, or specifications furnished.

What it counts from. 180 days after last furnishing (last day on site).

Applies to. Original contractor, Subcontractor, Supplier, Preconstruction service.

Wis. Stat. § 779.06 (1)
Official source · statute text retrieved 2026-09-21

“No lien under s. 779.01 shall exist and no action to enforce a lien under s. 779.01 shall be maintained unless within 6 months from the date the lien claimant performed, furnished, or procured the last labor, services, materials, plans, or specifications, a claim for the lien is filed in the office of the clerk of circuit court of the county in which the lands affected by the lien lie...”

If the date is missed (the statute's own terms). The statute states plainly "no lien... shall exist" without a timely-filed claim - a right-extinguishing deadline, not merely procedural.

Also stated next to this deadline.

Commence an action to enforce the lien

Counted from the date the claim for lien was filed. The same statutory sentence that sets the 6-month filing deadline also sets this 2-year enforcement deadline - read them together.

What it counts from. 730 days after notice of construction lien recorded.

Applies to. Original contractor, Subcontractor, Supplier, Preconstruction service.

Wis. Stat. § 779.06 (1)
Official source · statute text retrieved 2026-09-21

“...and unless within 2 years from the date of filing a claim for lien an action is brought and summons and complaint filed.”

If the date is missed (the statute's own terms). The statute states no action to enforce the lien "shall be maintained" without a timely-filed suit within this period, chained from the same sentence establishing the filing deadline.

Also stated next to this deadline.

Weekend and holiday rollover

NoticeGuard does not model a weekend or holiday extension for Wisconsin. The dates above are the plain count from the date you enter. Check whether a Saturday, Sunday or holiday changes your date.

What this rule set does not cover

Keep track of the dates

About the NoticeGuard app

NoticeGuard is an app that turns a job's dates into a countdown for each statutory step, shows the statute text each date was read from, exports a calendar file (.ics) and sends reminders 14, 7 and 1 day before each deadline. It tracks and reminds; it does not file anything for you.

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