Construction Law, Transactions and Disputes

Waiver of mechanics’ lien claims is an important and frequent issue on construction projects. There are various approaches to lien claim waivers, depending on the type of project and the preferences of the parties. Because of the various types of lien claim waivers, there is often confusion. This article explains the different types of lien claim waivers.

An initial fundamental point regarding mechanics’ lien claims and waivers, is that they are creatures of statute. Each state has its own laws that govern mechanics’ liens and waivers. There is no universal, national law that governs. Instead, each state has its own statutes and interpretation of the law. Additionally, mechanics’ liens generally cannot be asserted against public projects.

Advance Lien Claim Waiver Versus Progress or Final Lien Claim Waiver

One categorical distinction between lien claim waivers is whether they apply in advance of the work, versus lien claim waivers that are executed during the progress of the project and apply to work performed as of the date of the waiver. An “advance” lien claim waiver is executed prior to the work being performed. Accordingly, it waives lien claim rights before doing the work. Most states prohibit advance lien claim waivers. In Pennsylvania, however, advance lien claim waivers are enforceable, but only on specific types of projects, and only if specific requirements are met (more on that below).

In contrast, a progress or final lien claim waiver is executed during the project, or after the work is completed, and it typically clarifies that it applies to the work already performed. The standard approach is to identify a “through date,” which means that the waiver applies to all work performed “through” a certain date. Typically, the “through date” would be a prior date that has already passed, and the lien claim waiver states that it is effective to waive lien claim rights for all work performed up to and including that date. Typically, progress lien claim waivers are executed with each payment application. None of the “through dates” are future dates—which would instead be an advance lien claim waiver. Progress and final lien claim waivers are effective and enforceable.

In Pennsylvania, for advance lien claim waivers to be effective, it must be a commercial project (non-residential), and a payment bond must be posted that covers the project. Also, the advance lien claim waiver is only effective to waive downstream (subcontractor/supplier) lien claim rights. The prime contractor with a direct contract with the owner cannot waive lien claim rights in advance, and the payment bond is posted by the prime contractor (so the payment bond does not cover the prime contractor’s demands for payment).

Conditional Versus Unconditional Lien Claim Waivers

Another categorical distinction in lien claim waivers is “conditional” versus “unconditional.”  A conditional lien claim waiver identifies that it is only effective if certain conditions (typically pending payment) occur. Thus, for example, with a conditional lien waiver, it will expressly state that the waiver is “conditioned” on the future receipt of the identified payment. If the identified payment is not received, then, the waiver (even if executed) is unenforceable.

Unconditional lien claim waivers, on the other hand, expressly state that the payment has already been received, and that there are no other requirements or events to occur for the lien claim waiver to be effective. Typically, these lien claim waivers identify themselves with the words “unconditional,” and they often state that the payment identified has been “received in fact,” or “received in hand.”  Complications can arise when payment has not in fact already been received; yet, an unconditional lien claim waiver (stating that payment has already been received) is erroneous executed. Generally, it is fair and reasonable to insist that lien claim waivers accurately express whether the payment has in fact already been made, or whether a conditional lien claim waiver should be used instead, because the payment is pending and not yet received.

It is also appropriate to revise or annotate a lien claim waiver to expressly state that certain claims, disputed amounts, open change orders, etc., are preserved and not waived. This avoids confusion on whether the payment was intended to cover any disputed, open, or unresolved items.

Preliminary Notices of Lien Rights, Construction Notices Directory, and Other Requirements

Lien claim waivers are specific documents that address whether a lien claim has been waived or preserved. Different and separate from lien claim waivers are statutory requirements that must be satisfied in order to preserve or pursue lien claims. Most states, including Pennsylvania, have requirements to notice and enforce lien claims. If you fail to satisfy all the requirements, including timeliness, it is likely that your lien claim will be lost.

Pennsylvania, similar to most states, has certain requirements that must be fulfilled when pursuing lien claims. In Pennsylvania, certain projects may be eligible for registration on the Construction Notices Directory, which is maintained by the Department of General Services. If a project is registered, then, the requirements under the mechanics’ lien law that pertain to the Construction Notices Directory must be followed; otherwise, the lien claim may be lost. One such requirement is to provide (and file with the Directory) early notice of potential lien claim rights.

Additionally, in pursuing a lien claim, certain processes must be followed; otherwise, the lien claim may be lost. In Pennsylvania, as a general rule, if the claim is by a subcontractor or anyone who is not in direct contract with the property owner, then, the claimant must give advance notice to the property owner of the intent to file the lien claim.

Also, any claimant, whether a downstream subcontractor/supplier or the prime contractor must meet specific deadlines in pursuing the lien claim. And the substance of any notices or lien claim filings must fulfill the statutory requirements. Failure to timely notice or file any of the items, or failure to adhere to the substantive requirements, will often result in the lien claim being unenforceable.

These requirements for noticing and pursuing the lien claim are not technically “waivers,” of the lien claim, but failure to follow the rules may result in the same outcome—the lien claim being lost and unenforceable.

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This article also appears in the February 2026 edition of the Spokesman, a publication of ABC Keystone.