Who Can File a Mechanics Lien?
Lien rights extend to most parties who contribute labor, materials, or professional services to a private construction project. Here is a breakdown of each claimant type.
General Contractor
Who qualifies
The prime/original contractor who holds a direct contract with the property owner. GCs generally have the broadest lien rights and the longest deadlines in most states.
Notice requirements
Most states do not require GCs to send a preliminary notice before filing, since they are in direct privity with the owner. Notable exceptions: FL (if not directly hired), WA, TX.
Filing requirements
Valid contract with property owner, proof of labor/materials furnished, unpaid balance. Must be properly licensed in states that require contractor licensing to file a lien.
Tip
Document every change order and keep a running log of last-day-of-work dates. Your lien deadline often starts on the day you last provided labor or materials — not the day you invoiced.
Subcontractor
Who qualifies
Any contractor hired by the GC (or another sub) rather than directly by the property owner. Subs are one tier removed from the owner, which triggers preliminary notice requirements in many states.
Notice requirements
Many states require subs to send a preliminary or pre-lien notice early in the project — often within 20–60 days of first furnishing. Missing this notice can permanently bar lien rights. Key states: CA, FL, AZ, WA, OR, NV, TX, UT, GA.
Filing requirements
Must show a valid subcontract, that labor/materials were furnished to the project, and an unpaid balance. Some states require the sub to be licensed.
Tip
Send your preliminary notice early — ideally at the same time you mobilize on the project. Do not wait until payment issues arise. In Texas, monthly sworn statements must be sent throughout the project.
Material Supplier
Who qualifies
Any company that furnishes building materials, equipment, or supplies that are incorporated into the improvement. This includes lumber yards, concrete suppliers, electrical supply houses, and similar businesses.
Notice requirements
Suppliers typically face the same preliminary notice requirements as subcontractors. Critically, suppliers often must send notice within a very short window (as few as 8 days in Oregon). Delivery receipts and invoices showing the property address are essential.
Filing requirements
Materials must have been delivered to and used on the specific project. Suppliers of fuel, consumable items, or equipment rentals may have reduced rights in some states.
Tip
Always note the project address on every delivery ticket. Maintain a paper trail linking each delivery to the specific property. Send preliminary notices for every new project — it is cheap insurance.
Equipment Lessor
Who qualifies
Companies that lease or rent equipment (cranes, excavators, scaffolding, etc.) used on a construction project. Lien rights for equipment lessors vary significantly by state — some states provide full rights, others limit or exclude them.
Notice requirements
Preliminary notice requirements generally apply to equipment lessors the same as to suppliers. Check state-specific rules — a handful of states do not extend lien rights to equipment lessors at all.
Filing requirements
The leased equipment must have been used directly in the construction improvement. Some states require the equipment to have been incorporated into or become permanently attached to the project. Rental of off-site storage or office equipment typically does not qualify.
Tip
Verify that your state allows equipment lessors to file liens before relying on this remedy. Keep delivery and pick-up logs that confirm the equipment was on-site at the specific project.
Design Professional
Who qualifies
Licensed architects, engineers, surveyors, and other design professionals whose services contribute to the improvement of real property. Rights exist even if construction never begins in many states.
Notice requirements
Design professionals often have lien rights from the date their contract is signed, not from when construction starts. Preliminary notice requirements vary widely — some states treat design professionals like contractors, others have separate rules.
Filing requirements
Must hold a valid professional license. Services must be related to a specific improvement to the property. Design work, surveys, and plans generally qualify. Mere feasibility studies may not in some states.
Tip
Your lien deadline may run from the date you last provided professional services — which could be months before any construction begins. Track this date carefully and do not assume your deadline aligns with the construction timeline.
Who cannot file a mechanics lien
Employees
Employees owed wages must file a wage claim with the state labor commissioner, not a mechanic's lien. Lien rights belong to independent contractors, not employees.
Unlicensed contractors (in licensing states)
States with mandatory contractor licensing — including CA, AZ, NV, FL, TX, WA, and others — generally prohibit unlicensed contractors from filing or enforcing a mechanic's lien.
Claimants on public property
You cannot file a mechanic's lien against government-owned property. Your remedy on public works projects is a payment bond claim under the Miller Act (federal) or the applicable state's Little Miller Act.
Parties without a qualifying contract
A lien requires a valid contract (express or implied) to perform work or furnish materials. Volunteers, officious intermeddlers, or parties whose contract was rescinded generally lack lien rights.
Quick check: do you have lien rights?
You are likely a General Contractor. Prelim notice usually not required.
You are a sub, supplier, or design professional. Check prelim notice rules.
You may have lien rights. Continue.
Employees and those without a qualifying contract generally cannot file.
Good — you can proceed with filing.
Get licensed first. An unlicensed contractor's lien may be void.
File a mechanic's lien.
File a payment bond claim (public works). Lien rights do not apply.
License requirements
Many states require a valid contractor's license as a prerequisite to filing or enforcing a mechanic's lien. Key states with strict licensing requirements: California, Arizona, Nevada, Florida, Texas, Washington, Louisiana, and North Carolina. An unlicensed contractor's lien can be challenged and voided — verify your licensing status before filing.