Wisconsin Notice of Intent to File Lien Claim & Construction Lien — Wis. Stat. § 779.06 / § 779.02 / § 779.05 Clerk of Circuit Court Filing Guide (2026)
✓ Verified against Wisconsin statutes · Reviewed August 2026 · By Michael Evan — Founder · 50 states · 799 rules
Wisconsin mechanics lien deadlines at a glance
Preliminary Notice
60 days — Notice of Intent
Mechanics Lien
6 months — From last date of furnishing
Enforcement
2 years — From filing
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What Is the Wisconsin Construction Lien Framework and How Does the Lien Workflow Operate?
Wisconsin's construction lien framework is codified at Wis. Stat. ch. 779, subch. I. The workflow has four core steps. (1) Near the start of the job, the claimant gives the § 779.02(2) preliminary notice — a prime contractor in the contract or within 10 days of first furnishing, a subcontractor or supplier within 60 days. (2) Near the end, the claimant serves the § 779.06(2) Notice of Intent to File a Lien Claim on the owner at least 30 days before filing. (3) The claimant files the verified lien claim with the clerk of circuit court of the county where the property lies within 6 months after last furnishing under § 779.06(1). (4) The claimant enforces the lien by commencing a Circuit Court foreclosure action and filing a lis pendens within 2 years of filing the claim. Wisconsin is distinctive in four respects: the two-notice structure (the § 779.02(2) preliminary notice and the separate § 779.06(2) Notice of Intent are both generally required), the filing office (clerk of circuit court, not register of deeds), the § 779.02(5) theft-by-contractor trust fund, and the § 779.05(1) rule that enforces advance lien waivers.
Who May Claim a Wisconsin Construction Lien
Under Wis. Stat. § 779.01(3), any person that performs or procures labor, services, materials, plans, or specifications for an improvement to real property has a lien on the improvement and the land. Rights extend to prime (general) contractors, subcontractors, sub-subcontractors, material suppliers, equipment lessors, laborers, and design and service professionals (architects, engineers, and surveyors are within the statute). The threshold step for every claimant other than the prime in direct contract with the owner is the § 779.02(2)(b) preliminary notice within 60 days of first furnishing — a missed 60-day notice means no lien at all. A valid signed waiver bars a lien under § 779.05(1), and that waiver is enforceable in Wisconsin even if signed before the work and without consideration. A prime contractor that fails to give the § 779.02(2)(a) preliminary notice loses not only the lien but the right to recover from the owner.
Wis. Stat. § 779.02(2) Preliminary Notice and § 779.06(2) Notice of Intent: Two Separate Notices
Wisconsin requires two distinct claimant-side notices. The § 779.02(2) preliminary notice comes near the start: under § 779.02(2)(a), a prime contractor (other than on projects excepted in § 779.02(1)) must give the owner a written preliminary notice in the contract or within 10 days of first furnishing; under § 779.02(2)(b), every other lien claimant not in direct contract with the owner must serve a written preliminary notice on the owner within 60 days of first furnishing. The § 779.06(2) Notice of Intent comes near the end: no lien claim may be filed unless, at least 30 days before filing, the claimant serves on the owner a written notice describing the nature of the claim, its amount, and the land and improvement. Because the lien claim must be filed within 6 months after last furnishing under § 779.06(1), the Notice of Intent must be served by about day 150 after last furnishing. Common mistakes: skipping the § 779.02(2)(b) 60-day preliminary notice, assuming the start-of-job notice satisfies the end-of-job Notice of Intent, and serving the Notice of Intent fewer than 30 days before filing.
Wis. Stat. § 779.06(1): The 6-Month Filing With the Clerk of Circuit Court and the 2-Year Enforcement Window
Under § 779.06(1), the lien claim is FILED with the clerk of circuit court of the county where the property lies within 6 months from the date the claimant last performed work or furnished labor, services, materials, plans, or specifications. Wisconsin is unusual here: most states record the lien with the register of deeds, but Wisconsin files it with the clerk of circuit court — the same office where the foreclosure will be docketed. Filing in the register of deeds office is a fatal defect. A foreclosure action must be commenced within 2 years from the date of filing the lien claim, with a lis pendens under § 779.10. The 6-month window runs from last furnishing, not from when payment became due, so a claimant that finishes early can lose protection on a retained or back-end balance before it is payable. Under § 779.06(3), the lien claim must state the contract or demand, the first and last furnishing dates, the person against whom the demand is claimed, the claimant and last-known address, a legal description, and the amount claimed after just credits and offsets, and must be signed and verified. Wisconsin has 72 counties; the largest markets are Milwaukee, Dane (Madison), Waukesha, Brown (Green Bay), Racine (the Mount Pleasant Microsoft campus), Outagamie (Appleton), Winnebago (Oshkosh), Kenosha, Rock (Janesville), Marathon (Wausau), Eau Claire, and La Crosse.
Two Wisconsin Payment Tools: § 779.02(5) Theft by Contractor and the § 779.05(1) Waiver Trap
Under Wis. Stat. § 779.02(5), all moneys paid to any prime contractor or subcontractor for improvements are a trust fund in that contractor's hands for the payment of the claims of subcontractors, suppliers, laborers, and service providers, until those claims are paid. Using the trust funds for any other purpose is theft by contractor — and by the officers, directors, or agents who knowingly cause the diversion. The civil remedy does not require proof that the defendant received a benefit or acted with wrongful intent, and it can reach individuals personally and survive the contractor's bankruptcy. Separately, under § 779.05(1), a Wisconsin lien waiver is valid and binding whether or not consideration was paid and whether signed BEFORE or AFTER the labor or materials were furnished, with any ambiguity construed against the signer — so advance waivers, void in most states, are enforceable in Wisconsin. This is distinct from § 779.135, which voids certain other provisions (out-of-state choice of law, out-of-state litigation requirements, and clauses waiving the right to recover).
Priority and Enforcement: § 779.01(4) Visible Commencement and the Circuit Court Foreclosure
Under Wis. Stat. § 779.01(4), a Wisconsin construction lien relates back to and takes priority from the date of the visible commencement of the work, so a perfected lien generally primes mortgages and other interests recorded after work was visibly underway, subject to the construction-mortgage priority rules. Because priority dates from the project's visible commencement rather than the individual claimant's first day, all timely Wisconsin lien claimants on a project generally share the same priority date. Enforcement is by a foreclosure action in the Wisconsin Circuit Court of the county where the property lies, commenced within 2 years of filing the lien claim under § 779.06(1), with a lis pendens under § 779.10. On a Wisconsin public works project, no private lien attaches; instead, the prime contractor must furnish a payment bond on public improvement contracts under the Wisconsin Little Miller Act at § 779.14, and unpaid subcontractors and suppliers pursue the bond. Wisconsin construction arbitration runs under Wis. Stat. ch. 788, and any clause requiring out-of-state law or litigation is void under § 779.135.
Frequently Asked Questions
What is the Wisconsin Notice of Intent to File a Lien Claim under Wis. Stat. § 779.06(2)?
Under Wis. Stat. § 779.06(2), no lien claim may be filed and no action brought unless, at least 30 days before timely filing the lien claim, the claimant serves on the owner a written Notice of Intent to File a Lien Claim describing the nature of the claim, its amount, and the land and improvement. It runs to the owner and must precede the filing by at least 30 days. Because the lien claim must be filed within 6 months after last furnishing under § 779.06(1), the Notice of Intent must be served by about day 150 after last furnishing. It is separate from, and in addition to, the § 779.02(2) preliminary notice given near the start of the job — a claimant generally must give both. Serving the Notice of Intent late, or not at all, bars the lien.
How is the Wisconsin § 779.02 preliminary notice different from the § 779.06(2) Notice of Intent?
Wisconsin requires two distinct notices. The § 779.02(2) preliminary notice is given near the START: a prime contractor in the contract or within 10 days of first furnishing (§ 779.02(2)(a)), and a subcontractor, supplier, or service provider not in direct contract with the owner within 60 days of first furnishing (§ 779.02(2)(b)). The § 779.06(2) Notice of Intent is given near the END, at least 30 days before filing the lien claim. Failing the § 779.02 preliminary notice forfeits lien rights (a prime also loses the right to recover from the owner, and a sub has no lien); failing the § 779.06(2) Notice of Intent bars filing the lien claim.
Where is a Wisconsin construction lien filed, and what must the lien claim contain?
Under Wis. Stat. § 779.06(1), the lien claim is filed in the office of the CLERK OF CIRCUIT COURT of the county where the property lies — not the register of deeds, as in most states. Filing in the wrong office is a fatal defect. Under § 779.06(3), the claim must state the contract or demand, the dates of the first and last work, the name of the person against whom the demand is claimed, the name and last-known address of the claimant and any assignee, a legal description of the property, and the amount claimed after just credits and offsets, and must be signed and verified. Wisconsin has 72 counties; the largest markets are Milwaukee, Dane (Madison), Waukesha, Brown (Green Bay), Racine, Outagamie (Appleton), Winnebago (Oshkosh), Kenosha, Rock (Janesville), Marathon (Wausau), Eau Claire, and La Crosse.
What is Wisconsin's theft-by-contractor trust-fund statute under Wis. Stat. § 779.02(5)?
Under Wis. Stat. § 779.02(5), all moneys paid to any prime contractor or subcontractor for improvements are a trust fund in that contractor's hands for the payment of the claims of subcontractors, suppliers, laborers, and service providers, until those claims are paid. Using the trust funds for any other purpose before those claims are satisfied is theft by contractor — and by the contractor's officers, directors, or agents who knowingly cause the diversion. It carries civil liability (Wisconsin courts have held a plaintiff need not show the defendant received a benefit or acted with wrongful intent to establish civil liability) and criminal exposure. An unpaid Wisconsin subcontractor or supplier therefore frequently has, in addition to a lien claim and a contract claim, a theft-by-contractor claim that can reach principals personally and survive the contractor's bankruptcy.
How long does a Wisconsin construction lien last and when must suit be filed?
Under Wis. Stat. § 779.06(1), a Wisconsin lien claim must be filed with the clerk of circuit court within 6 months after the claimant last performed work or furnished labor, services, or materials, and a foreclosure action — by filing a summons and complaint — must be commenced within 2 years from the date the lien claim was filed, with a lis pendens under § 779.10. Missing the 6-month filing deadline forfeits the lien; missing the 2-year enforcement deadline renders the filed lien unenforceable. The 6-month window runs from LAST furnishing, not from when payment became due. The foreclosure is brought in the Wisconsin Circuit Court of the county where the property lies.
Are advance lien waivers enforceable in Wisconsin under Wis. Stat. § 779.05(1)?
Yes — and it is a Wisconsin trap. Under Wis. Stat. § 779.05(1), a document purporting to waive construction lien rights is valid and binding whether or not consideration was paid and whether signed BEFORE or AFTER the labor or materials were furnished, with any ambiguity construed against the signer. In roughly 29–30 states a 'no-lien' clause or advance waiver is void as against public policy, but Wisconsin enforces advance waivers. A Wisconsin contractor who signs a broad lien waiver in a subcontract or pay application — even before performing the work and even without consideration — can lose its lien rights. This is distinct from Wis. Stat. § 779.135, which voids certain OTHER provisions (out-of-state choice of law, out-of-state litigation requirements, and clauses waiving the right to recover). Read every waiver carefully and limit it to the specific payment actually received.
How does Wisconsin handle public works and federal projects?
No private construction lien attaches to public property. On Wisconsin state, county, municipal, and school-district public works (Wisconsin DOT, the University of Wisconsin System, K-12 schools, and Milwaukee / Madison / Green Bay public works), pursue the prime contractor's payment bond under the Wisconsin Little Miller Act at Wis. Stat. § 779.14. On federal projects, the federal Miller Act at 40 U.S.C. § 3131 et seq. preempts state lien rights — Fort McCoy (the U.S. Army total-force training center in Monroe County), Truax Field Air National Guard Base (Madison — the 115th Fighter Wing transitioning to the F-35A), General Mitchell Air Reserve Station (Milwaukee — the 128th Air Refueling Wing and the KC-135), Volk Field Air National Guard Base (Camp Douglas), U.S. Coast Guard stations on Lake Michigan and Lake Superior, the Zablocki and Middleton VA Medical Centers, Apostle Islands National Lakeshore, and Bureau of Indian Affairs construction on the Oneida, Menominee, Ho-Chunk, and Lac du Flambeau reservations.