What must be posted at the building site when work begins?

When work begins on a construction site, it is essential to have a special card from the building department posted prominently. This card typically serves as an official notice indicating that the project has been approved by the relevant local authority and that construction can legally proceed. It often includes important information such as the permit number, project details, and the name of the contractor. This ensures compliance with local building codes and regulations, which are crucial for safety and standardization in construction practices.

The other options—such as a schedule of payments, a blueprint of the project, and a list of materials—play important roles in the project’s management and execution but do not serve as official documentation required to be posted at the site. These documents might be useful for the contractor and subcontractors on-site but do not meet regulatory requirements in the same way that the permit card does.