What Is a Mechanics Lien in Wyoming — Complete 2026 Guide
✓ Verified against Wyoming statutes · Reviewed August 2026 · By Michael Evan — Founder · 50 states · 799 rules
Wyoming mechanics lien deadlines at a glance
Preliminary Notice
None — N/A
Mechanics Lien
120 days — From last date of furnishing
Enforcement
180 days — From filing
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150-Day Filing Deadline Under Wyo. Stat. § 29-2-107
Under Wyo. Stat. § 29-2-107, every Wyoming mechanics lien claimant must record a verified lien statement with the County Clerk of the county where the improved property is located within 150 days after the last date of furnishing labor, materials, or professional services. The 150-day filing window applies uniformly across all claimant types — general contractors, subcontractors at any tier, material suppliers, equipment lessors, laborers, and design professionals. Wyoming's 150-day filing window is one of the longest in the country. Each claimant's clock runs from that claimant's own last date of substantive furnishing — not the project completion date and not the prime contractor's last day on site. Trivial punch-list returns or warranty visits typically do not restart the 150-day clock; a legitimate substantive last day of work does. The lien statement must include the claimant's name, the property owner's name, the contracting party's name (if different from the owner), a sufficient legal description of the property, the dates of first and last furnishing, the amount claimed, and verification by oath.
Post-Recording Owner Service Within 30 Days Under § 29-2-107
After recording a Wyoming mechanics lien with the County Clerk, the claimant must serve a copy of the recorded lien on the property owner within 30 days of the filing date under Wyo. Stat. § 29-2-107. The post-recording service requirement applies to all claimant types. Service must be made consistent with Wyoming rules of civil procedure — certified mail with return receipt requested is the standard practice, with personal service or service by sheriff as alternatives. Failing to serve the owner within 30 days can affect the validity and priority of the lien against bona fide purchasers and subsequent encumbrancers. Treat post-recording owner service as a mandatory same-week action on every Wyoming mechanics lien project.
23 Counties and Multi-County Energy Projects
Wyoming mechanics liens are recorded with the County Clerk of the county where the improved property is located. Wyoming has 23 counties — fewer than any other contiguous lower-48 state except Delaware (3) and Rhode Island (5). The most active construction counties include Natrona (Casper, the state's second-largest city and oil-and-gas hub), Laramie (Cheyenne, the state capital), Teton (Jackson Hole, where high-value resort and residential construction generates per-square-foot project values among the highest in the country), Campbell (Gillette, the heart of Wyoming's coal and energy sector), Sweetwater (Rock Springs, Green River), Albany (Laramie), and Sheridan. Wyoming's oil-and-gas, pipeline, and wind-energy construction projects frequently span multiple counties. A pipeline contract may run through Natrona, Converse, Niobrara, and Goshen counties on a single project. Each segment of the project that lies in a different county may require a separate mechanics lien filing.
180-Day Enforcement Deadline Under § 29-2-109
Under Wyo. Stat. § 29-2-109, an action to enforce the lien must be commenced in the District Court of the county where the property is located within 180 days from the date the lien was recorded with the County Clerk. Wyoming's 180-day enforcement window is among the shortest in the United States — far shorter than neighboring Montana's 2-year window, Colorado's 6-month window, and most states' 1-year-or-longer enforcement periods. The 180-day clock runs strictly from the filing date, not the last date of furnishing. A claimant who records on day 149 has only 180 days from that recording date to commence suit. Calendar the 180-day enforcement deadline immediately upon recording, set a 120-day reminder, and retain Wyoming construction counsel by month 5 if the dispute remains unresolved. The Mechanics Lien Management State System tracks the 180-day enforcement deadline automatically from the recording date.
Frequently Asked Questions
How long do I have to file a mechanics lien in Wyoming?
Under Wyo. Stat. § 29-2-107, every Wyoming mechanics lien claimant must record a lien statement with the County Clerk of the county where the improved property is located within 150 days after the last date of furnishing. The 150-day filing window applies uniformly to general contractors, subcontractors, suppliers, and design professionals — Wyoming does not tier the filing deadline by claimant type.
Does Wyoming require a preliminary notice before filing a mechanics lien?
No. Wyoming does not require a preliminary notice as a precondition to filing a mechanics lien. However, after recording the lien with the County Clerk, the claimant must serve a copy on the property owner within 30 days under Wyo. Stat. § 29-2-107. The post-recording service requirement is mandatory and applies to all claimant types.
Where do I file a mechanics lien in Wyoming?
File with the County Clerk of the county where the improved property is located. Wyoming has 23 counties — major construction-volume counties include Natrona (Casper), Laramie (Cheyenne), Teton (Jackson Hole), Campbell (Gillette), and Sweetwater (Rock Springs). For multi-county projects (pipelines, wind-energy infrastructure), separate filings may be required in each county where work was performed.
How long do I have to enforce a Wyoming mechanics lien?
Under Wyo. Stat. § 29-2-109, an action to enforce the lien must be commenced in the District Court of the county where the property is located within 180 days from the recording date. Wyoming's 180-day enforcement window is among the shortest in the United States. Calendar the deadline immediately upon recording.
Who can file a mechanics lien in Wyoming?
Under Wyo. Stat. §§ 29-2-101 through 29-2-103, every contractor, subcontractor, sub-subcontractor, material supplier, equipment lessor, laborer, architect, engineer, and surveyor who furnishes labor, services, materials, or equipment for the construction, alteration, or repair of any building, structure, or improvement on real property in Wyoming has a mechanics lien.