This is a $617,343.14 definitive, firm fixed-price contract awarded by the General Services Administration (GSA) Region 1 to Cornerstone Construction Services, LLC, a Service-Disabled Veteran-Owned Small Business (SDVOSB). The contract is for the construction and HVAC system upgrade at the North Troy Land Port of Entry in North Troy, Vermont. The project includes the installation of a new centralized air handler and condenser unit to improve system reliability and serviceability. Key subcontractors include Matt's Construction Co., LLC for demolition and concrete work, B L Mechanical Inc. for mechanical work, and Mike's Electric, Inc. for electrical work. This contract was not set aside but was awarded as a sole source to an SDVOSB under the original $250,000 to $500,000 solicitation. Cornerstone Construction Services holds several significant federal contract vehicles, including a $125 million GSA Region 1 IDIQ, enabling the company to rapidly deliver construction and infrastructure services to various government agencies.