Block Managers oversee multiple construction sites or blocks within a development, focusing on coordination, resource management, and compliance across projects. Site Supervisors typically manage daily operations on a single construction site, ensuring work is completed safely and on schedule. While both roles require knowledge of construction processes and certifications like OSHA or safety training, Block Managers need broader project management skills, whereas Site Supervisors focus on on-site supervision. The roles often overlap in industry usage, but Block Managers are more strategic, and Site Supervisors are more operational.