Mechanics Lien Basics for Contractors and Subcontractors Pennsylvania’s Mechanic’s Lien Law operates to give a security interest to those contractors and subcontractors who provide labor and materials in connection with repairs, alterations or construction of real estate. When properly exercised, it is a powerful tool providing a security interest in the property to ensure that the contractor or subcontractor will ultimately receive payment for his work and materials. Materialmen are also entitled to file a Mechanic’s Lien even when they do not have a direct contract with the property owner. Obviously, no Mechanic’s Lien can be filed until there is a failure by the property owner or the general contractor to pay a contractor or subcontractor or materialman after the labor and materials have been provided and invoiced pursuant to the terms of their contractual relationship. It is important to note that no Mechanic’s Lien Claim may be filed for amounts under $500. While general contractors may file a Mechanic’s Lien Claim without giving prior notice to the owner, all subcontractors and materialmen must provide at least 30 days’ written notice to the property owner before filing a Claim. That notice must provide the property owner of the intention to file a Mechanic’s Lien Claim and must include the following information: Name of Claimant Name of person/entity with whom Claimant contracted Amount [...]