CALL US TODAY:
978-273-8337

Massachusetts Real Estate Law · Construction Law

Section 4 Liens, Subcontractor Tiers, and the Notice of Identification: What Every Subcontractor in Massachusetts Needs to Know

The deeper you sit in a construction project’s chain of contractors, the more steps you need to take to protect yourself — and the easier it is to lose your lien rights entirely without ever realizing it.

In two earlier articles in this series, I covered the basics of Massachusetts mechanic’s lien law — who qualifies, what property can be reached — and then the critical deadline structure built around substantial completion and the rolling lien. Both of those articles focused primarily on the rights of general contractors and first-tier subcontractors operating under Section 2 of the statute. In this article, I want to turn to Section 4 and the contractors it governs: the subcontractors, sub-subcontractors, and lower-tier participants whose work is often just as essential to a project as the general contractor’s, but whose lien rights come with a meaningfully different set of rules and a very specific trap that swallows lien claims whole when people do not pay attention.

If you are a subcontractor or supplier on a Massachusetts construction project — especially if you are working for someone other than the general contractor directly — this is the article you need to read carefully.

Section 2 vs. Section 4: Understanding the Divide

Massachusetts mechanic’s lien law draws a fundamental distinction between those who have a direct contract with the property owner and those who do not. General contractors and prime design professionals operate under Section 2, which comes with the retainage priority protections and the rolling lien provisions I discussed in the previous article. Everyone else — the subcontractors, sub-subcontractors, material suppliers, and design professionals who contract with the general contractor or a subcontractor rather than the owner directly — operates under Section 4.

Section 4 covers two distinct groups. The first group is first-tier subcontractors: those who have a direct contract with the party that itself has a contract with the owner — in most cases, that means a direct contract with the general contractor. The second group is second-tier subcontractors and below: those whose contracts are with someone other than the general contractor — a sub-subcontractor working for a first-tier subcontractor, for example, or a supplier to that sub-subcontractor. The 2011 amendments also brought design professionals who provide services to a contractor or subcontractor — rather than to the owner directly — under the Section 4 umbrella.

Section 4 claimants enjoy the same relaxed rules on completion dates and filing windows as Section 2 claimants — but they do not get the retainage priority or the waiver and subordination protections that Section 2 gives to general contractors. That difference has real consequences on complex projects.

The Construction Tier Structure — and Where Each Party Falls Under the Statute

Property Owner

Contracts directly with the general contractor

↕

General Contractor

Direct contract with owner — also includes prime design professionals

Section 2

↕

First-Tier Subcontractors

Direct contract with the general contractor — includes design professionals contracting with the GC

Section 4

↕

Second-Tier Subcontractors

Contract with a first-tier sub — must send Notice of Identification to GC

Section 4

↕

Third-Tier and Below

Contract with a second-tier sub or lower — Notice of Identification required

Section 4

The Notice of Identification: The Step Most Lower-Tier Subcontractors Miss

Here is where things get critically important for anyone who is not working directly for the general contractor. The statute requires second-tier subcontractors and everyone below them to serve a written notice of identification on the general contractor. This notice must be sent by certified mail, return receipt requested, using a standardized form provided in the statute.

The purpose of the notice of identification is straightforward: it requires the lower-tier subcontractor to reveal its identity and the nature of its work to the general contractor early in the project. Once the general contractor knows who the lower-tier participants are and what they are contributing, the general contractor can take steps to condition its payments to upper-tier subcontractors on proof that those subcontractors are paying their own subs and suppliers. That is the protection the statute is trying to create; a mechanism that keeps money flowing down the chain rather than pooling at an intermediate level.

The notice of identification is a certified-mail form that takes a matter of minutes to send. Failing to send it can cost a second-tier subcontractor its entire lien claim above whatever amount happened to be owed at the time the notice of contract was eventually recorded. That is a severe consequence for an easily avoided oversight.

What Happens If You Send the Notice of Identification

When a second-tier subcontractor properly sends the notice of identification and the general contractor then pays the first-tier subcontractor (who, in turn, fails to pass that payment down) the second-tier subcontractor is generally entitled to a lien for the full amount of its claim, subject as always to the equity in the property and the amount due the general contractor from the owner. The general contractor, having been put on notice, had the opportunity to protect itself and to make payment conditional on evidence of payment to the sub. If it did not do so, the statute does not penalize the subcontractor who followed the rules.

What Happens If You Do Not Send the Notice

This is the painful scenario. If a second-tier subcontractor does not send the notice of identification before the general contractor pays the first-tier subcontractor in full — and the first-tier subcontractor then fails to pay the second-tier (the second-tier subcontractor’s lien rights for that amount are lost). Not reduced. Gone.

More broadly, a lower-tier subcontractor who fails to provide a notice of identification risks having its lien capped at whatever amount was due or about to become due as of the date the lower-tier subcontractor ultimately files its notice of contract. Under the statute, the lien of a Section 4 claimant is limited to the amount due or to become due under the original general contract as of the date notice of the subcontract filing is given to the owner. If the general contractor has already been paid in full by the time the notice of contract is recorded, there may be nothing left to reach.

The “Amount Due or to Become Due” — and Why Timing Is Everything

The phrase “due or to become due” is one of the most consequential pieces of language in Section 4, and it deserves careful attention. The key principle established by Massachusetts courts is that this amount is determined as of the time the subcontractor’s notice of contract is recorded, and it is net of any back charges or damages owed to the owner or the general contractor.

What this means in practice is that the viability of a lower-tier subcontractor’s lien can be dramatically affected by events occurring between the time work is performed and the time the notice of contract is actually recorded. If the general contractor is defaulted or terminated before the lower-tier subcontractor gets around to recording its notice of contract, the amount “due or to become due” to the general contractor may have been reduced, or eliminated entirely, by the time the notice is filed. The lower-tier subcontractor is then left holding a lien that, while technically valid, attaches to nothing.

Section 4 Best Practices for Subcontractors at Every Tier

• Send your Notice of Identification on every project from the first day of work — treat it as standard operating procedure, not an optional step
• Send it by certified mail, return receipt requested, using the statutory form, addressed to the general contractor
• File your Notice of Contract promptly — do not wait until a dispute arises, because by then the “amount due or to become due” may already have been reduced
• Understand which tier you occupy on each project — your obligations and protections differ based on who you contracted with
• If the general contractor has been defaulted or the project is in dispute, consult an attorney before filing your notice of contract, so you understand what the lien can realistically reach
• Design professionals contracting with a GC or subcontractor are Section 4 claimants and must follow these same rules

The Capping Mechanism: Protecting the General Contractor and Owner from Surprise Claims

The capping provisions in Section 4 exist for a reason, and understanding that reason helps clarify why the notice of identification requirement is structured the way it is. On large or complex projects, a general contractor may have no direct knowledge of who is working two or three tiers below it. Without any obligation on lower-tier subcontractors to identify themselves, a general contractor could pay its first-tier subcontractors in full, close out the project, and then — weeks or months later — receive lien notices from suppliers and sub-subcontractors it had never heard of. The capping mechanism prevents that outcome by tying the lower-tier subcontractor’s lien to the amount outstanding under the general contract at the time the subcontractor’s claim is formally asserted.

It is a compromise, but a sensible one: it protects general contractors and property owners from surprise exposure while preserving full lien rights for any lower-tier subcontractor who takes the simple step of identifying itself early in the project.

A Practical Note on the “Hostility Factor”

Unlike the Section 2 notice of contract, which the statute specifically works to make a routine and non-hostile event on commercial projects, through the rolling lien mechanism and the forced funding rules, a Section 4 notice of contract still carries what practitioners sometimes call the “hostility factor.” There is no equivalent of the rolling lien for Section 4 claimants. When a subcontractor files a Section 4 notice of contract, it puts the project on notice in a way that can strain relationships. This is a reality of the statute rather than a bug, and it means that subcontractors need to think carefully about when and why they file; though it should never come at the expense of missing a filing deadline.

The Bottom Line for Subcontractors

Section 4 of the Massachusetts mechanic’s lien statute is built on a clear principle: the lower your position in the construction chain, the more proactive you need to be in order to preserve your lien rights. The notice of identification requirement is not a bureaucratic formality, rather, it is a substantive protection that can make the difference between recovering your full claim and recovering nothing at all. Sending it on every project, from day one, costs almost nothing. Failing to send it can cost everything.

The interplay between the tier structure, the notice of identification, the notice of contract, and the “amount due or to become due” calculation makes Section 4 one of the more technically demanding parts of Massachusetts construction law. The specific facts of a project: who has been paid, when, what back charges are in play, and whether the general contractor has been defaulted, can all affect what a lower-tier subcontractor is actually able to recover on a lien claim. These are not questions to sort out after the fact. If you are a subcontractor or supplier on a Massachusetts project and you are not confident about your lien position, the time to get advice is before the payment dispute escalates, not after the filing windows have closed.

---

Disclaimer

The information provided in the pages and posts of this website are for general informational purposes only. The information presented on this site is not legal advice, and no attorney-client relationship is formed by the use of this site.

Massachusetts Real Estate Law Construction Law Mechanic’s Liens