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You did the work. You supplied the materials. Now the money isn’t coming and the calls aren’t being returned. If you’re a contractor or subcontractor in Pennsylvania, a mechanic’s lien may be one of the most powerful tools you have to get paid. But Pennsylvania’s lien law is technical, and a single missed deadline or procedural error can cost you big time.
If you’re already past your deadline or unsure whether you’ve preserved your rights, our team at AttorneyX is ready to help. We offer free consultations so you can talk to us even if you’re unsure whether you have a valid case.
What Is a Mechanic’s Lien?
A mechanic’s lien is a legal claim placed against a property by someone who provided labor or materials for its improvement and hasn’t been paid. Under Pennsylvania’s Mechanic’s Lien Law of 1963 (49 P.S. §§ 1101–1902), the lien attaches to the property itself (and not just the owner’s bank account or personal assets).
What makes Pennsylvania’s lien law particularly powerful is something called “relation back.” Your lien, once properly filed, is treated as if it existed from the moment work visibly began on the property. That means it can take priority over mortgages and other encumbrances recorded after construction started. For contractors working on projects across the Philadelphia area, in Chester County, or in towns like Phoenixville, that priority can make the difference between a collectible claim and a worthless one.
Pennsylvania law also has no automatic “defense of payment” for commercial project owners. Even if an owner paid the general contractor in full, a subcontractor’s lien can still stand. So, the burden is on the owner to ensure that everyone down the payment chain gets paid.
Who Can File a Mechanic’s Lien in PA?
Pennsylvania lien rights extend to three tiers of the construction chain:
- General contractors (those with a direct contract with the property owner)
- Subcontractors (those with a direct contract with the general contractor)
- Sub-subcontractors (those with a direct contract with a subcontractor)
Suppliers of labor and materials to any of these parties may also have lien rights, as long as they have a direct contract with someone in this chain. A supplier who only contracts with another supplier does not have lien rights under the Pennsylvania business law.
Mechanic’s liens generally apply to private construction projects. This means any property used for a purely public purpose, such as a government building or certain nonprofit facilities, is typically exempt from Pennsylvania’s lien law. This is because public projects are governed by separate payment bond requirements. If you’re unsure whether your project qualifies, an attorney can help you confirm before you invest time in the filing process.
How to File a Mechanic’s Lien in Pennsylvania
Pennsylvania’s lien process involves several sequential steps. Each one has its own deadline, and skipping or mis-timing any of them can void your claim. Here’s how the process works from start to finish:
Step 1: Determine Whether You Need a Notice of Furnishing
If the project you worked on cost more than $1,500,000 and the property owner filed a Notice of Commencement in the Pennsylvania State Construction Notices Directory, you may be required to file a Notice of Furnishing within 45 days of first supplying labor or materials to the project. This is a pre-filing requirement and not a substitute for the lien itself. Failing to file when required can destroy your lien rights before you even have a chance to assert them.
Step 2: Serve a Formal Notice of Intent to Lien
If you are a subcontractor or sub-subcontractor, Pennsylvania law requires you to serve a Formal Notice of Intent to file a lien on the property owner at least 30 days before you file your lien claim. The Notice of Intent must be served in a specific manner and must identify the claimant, the amount claimed, and the property. Getting the form or service method wrong can invalidate the entire lien, even if everything else is done correctly. Improper service is one of the leading reasons liens are dismissed in Pennsylvania.
Step 3: File the Lien Claim with the Prothonotary’s Office
All claimants, i.e. general contractors, subcontractors, and sub-subcontractors, must file a Lien Claim with the court clerk in the county where the property is located. In Philadelphia, that’s the Philadelphia Court of Common Pleas. In Chester County, it’s filed at the Chester County Courthouse in West Chester.
Your attorney must file the Lien Claim within six months of your last day of work on the project. “Last work” means the last date you actually performed labor or supplied materials – not the date you invoiced or the date payment was due. Courts in Pennsylvania have scrutinized this date carefully, and performing token work to extend the deadline has been rejected when it wasn’t genuine. Here are some things your Lien Claim must include:
- Your name and address as the claimant
- The name of the property owner
- A description of the property (typically the legal description or address)
- A description of the labor or materials you provided
- The amount you are owed
- The date of your last work
Every item on this list matters. Liens have been dismissed in Pennsylvania for vague property descriptions or for failing to correctly identify the owner.
Step 4: Serve Notice of the Lien Claim on the Owner
Within one month of filing the Lien Claim with the prothonotary (clerk), you must serve a written notice of the filing on the property owner. Please note that this is a separate requirement from the Notice of Intent served before filing.
Step 5: File an Affidavit of Service
Within 20 days of serving notice on the owner, you must file an Affidavit of Service with the court confirming that service was completed. If you miss this step, your lien will be considered defective. This is one of the most common mistakes people make.
Once all of these steps are complete, your lien is perfected and preserved for two years. No further court action is required during that period, which makes a properly filed lien a relatively cost-effective way to maintain your rights while pursuing payment.
Step 6: Enforce the Lien (If Necessary)
Often, a property owner will immediately wish to settle the debt after learning there is a lien on their property. However, if they refuse to make payment, you must file a lawsuit to enforce the lien within two years of the date you filed the Lien Claim. Prevailing in the lawsuit would mean that typically the court sends the property to a sheriff’s sale and you receive the proceeds from the sale which you are owed. Failing to enforce within the two-year window causes the lien to expire, and you lose the ability to foreclose on the property to collect your debt.
How To File Mechanic’s Liens in PA: FAQs
Do Subcontractors Need to Give Notice Before Filing a Lien?
Yes. Subcontractors and sub-subcontractors in Pennsylvania must serve a Formal Notice of Intent on the property owner at least 30 days before they file the actual Lien Claim. General contractors with a direct contract with the owner are not required to give this notice.
What Happens After a Mechanic’s Lien Is Filed?
Once a lien is filed, it attaches to the property as a matter of public record. This means the owner generally cannot sell or refinance the property without addressing the lien. In many cases, the lien alone is enough to prompt payment or serious settlement discussions. If payment still doesn’t come, you have up to two years from the filing date to bring a foreclosure action to enforce the lien. During that window, the lien remains in place and continues to cloud the title.
Can a Mechanic’s Lien Be Challenged?
Yes. Property owners and general contractors have several ways to challenge a lien. They can file a Petition to Strike if the lien contains an issue. They can also file a Petition to Open to dispute the underlying facts, such as whether the work was actually performed or whether the amount claimed is accurate. A lien can also be discharged if the owner posts a bond, which substitutes the bond for the property as security.
Common Mistakes That Can Void Your PA Mechanic’s Lien
Filing mistakes are one of the most common reasons liens get dismissed in Pennsylvania. The most frequent problems include:
- Missing the six-month filing deadline
- Failing to serve the Notice of Intent before filing
- Improperly serving the owner after filing
- Using an inaccurate or incomplete property description
- Failing to correctly identify the property owner
- Not filing the Affidavit of Service within 20 days
Protect Your Business. Talk to a Pennsylvania Construction Attorney
Pennsylvania’s mechanic’s lien process is one of the most effective tools available to contractors and subcontractors who haven’t been paid. But it requires precision. A Pennsylvania construction attorney can help you preserve your lien rights, prepare the claim correctly, and enforce it if needed. Don’t wait until you’ve missed a deadline to ask for help. Contact AttorneyX today to protect your payment rights.
