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A Lien On Your House

Mechanics' Lien Law 502 — filed within six months after the work is completed, and served within one month

Six months, then one. To perfect a lien, the claimant files a claim with the prothonotary within six (6) months after completing the work, and serves written notice of the filing on the owner within one (1) month after filing, with an affidavit of service filed within twenty (20) days. Missing those times is ground for striking the claim.

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A subcontractor's thirty days. A subcontractor's claim is not valid unless, at least thirty (30) days before filing, the subcontractor gave the owner formal written notice of the intent to file, stating the amount claimed, the work, the date it was completed, and the property.

Other sections of the same law, and the court's own rules, are not on this page. How it applies to a particular case is a question for a licensed Pennsylvania attorney.

Sources for this section (2)
  1. Mechanics' Lien Law 501 — Formal notice by a subcontractor
  2. Mechanics' Lien Law 502 — Filing and notice of filing of a lien claim

Legal information, not legal advice. Verified as of September 2026. Applying it to a particular situation is the work of a licensed Pennsylvania attorney.

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