A Construction Lien is a legal claim against real property for unpaid labor, materials, supplies, or equipment provided to improve that property. It is also commonly called a mechanics lien. In practical terms, it gives the unpaid party an interest in the property itself, not just a claim against the person or company that failed to pay.
That is what makes the remedy so powerful. A contractor who installs work into a building usually cannot remove the improvement and resell it somewhere else. The lien provides leverage by tying the unpaid amount to the property that benefited from the work.
Once filed, the lien generally becomes an encumbrance on title. That means the property owner’s rights are burdened until the lien is paid, released, bonded off, challenged, or otherwise resolved. In some cases, if the lien is valid and remains unpaid, the claimant may be able to enforce it through court and seek a foreclosure sale of the property.
Lien rights typically belong to parties who contributed labor, materials, equipment, or services that improved the real property. Depending on state law, that may include general contractors, subcontractors, sub-subcontractors, material suppliers, equipment lessors, laborers, or construction workers.
The exact list varies by state. Some states extend rights broadly through the payment chain. Others limit rights based on contract tier, notice compliance, project type, or the nature of the work performed.
Parties that generally do not have lien rights include those whose work does not improve the property, parties who miss required notice steps, or participants on public works projects. Public property usually cannot be encumbered by a private lien. On those projects, unpaid subcontractors and suppliers may need to pursue a payment bond claim instead.
Lien rights are deadline-driven. Many states require a preliminary notice near the beginning of the project. Some require a notice of intent before the lien is filed. The lien itself must usually be filed within a specific period after the claimant’s last work, last furnishing of materials, or completion of the project.
These windows are strict. If a claimant misses a required notice deadline, files late, or fails to enforce the lien on time, the claim may be lost even if the underlying payment dispute is legitimate.
Construction lien deadlines vary significantly by state. In California, preliminary notice is due in 20 days, and lien filing is due 90 days after project completion. In Florida, a 45-day notice to owner is required, and liens must be filed within 90 days. New York requires no preliminary notice and allows 8 months for commercial filings.
A filed lien can create immediate practical problems for a property owner. Because it clouds title, it may delay or block a sale until the lien is released or otherwise resolved. A buyer, title company, or lender will usually want the lien addressed before closing.
It can also interfere with refinancing or new borrowing. A lender may be unwilling to extend credit against property that is already subject to a lien claim. Even when financing remains possible, the lien can create additional review, documentation, escrow, bonding, or payoff requirements.
For owners, this makes payment controls important. Collecting proper waivers, tracking subcontractors and suppliers, confirming payment down the chain, and resolving disputes early can reduce the chance of a lien appearing unexpectedly. Legal Fees and Transaction Costs can also increase when a filed lien must be contested, bonded, released, or resolved as part of a sale or financing.
Does filing a Construction Lien guarantee that a contractor gets paid?
No. Filing a lien does not guarantee payment. It creates leverage by attaching a legal claim to the property, but the lien may still be disputed, challenged, settled, bonded off, or enforced through court if payment is not resolved.
What is a lien waiver and when is it safe to sign one?
A construction lien waiver is a document signed in exchange for payment that waives the signer’s right to file a lien for the amount specified in the waiver. Conditional waivers are generally safer before funds clear. Unconditional waivers should be signed only when payment has actually been received and confirmed.
Is there anything a property owner can do to prevent a lien from being filed?
Yes. Owners can require preliminary notices, collect lien waivers with payments, verify that subcontractors and suppliers are being paid, use joint checks where appropriate, and address payment disputes quickly. Strong project documentation can prevent surprises late in the process.
How long does a Construction Lien remain attached to a property before it expires?
The duration depends on state law. After filing a mechanics lien, the claimant usually has a limited period to enforce it. If the claimant does not act within that period, the lien may expire or become unenforceable.
Construction liens are one of the most important Financial Factors in Construction because they can delay property sales, disrupt financing, and increase legal and transaction costs for everyone involved in a project. Understanding lien rights, deadlines, and waiver requirements helps contractors and property owners protect cash flow and reduce the financial risks associated with payment disputes.
For more than four decades, Bennett Thrasher has provided businesses and individuals with strategic business guidance and solutions through professional tax, audit, advisory, and business process outsourcing services. Contact Mike Reynolds, partner in charge of Bennett Thrasher’s Financial Reporting & Assurance practice, who has industry experience in Construction, or call us at 770.396.2200.

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