Contractor services, namely, review of and remedial recommendations for building plumbing, electrical and mechanical systems for others; Janitorial services; Maintenance and repair of buildings; Real estate development; Real estate development and construction of commercial, residential and hotel property; Real estate site selection; Remodeling of historic, residential, and commercial buildings; Building construction, remodeling and repair; Cleaning of commercial premises; Construction project management services in the field of historic building preservation; General building contractor services; Housing services, namely, development of real property, namely, repair, improvement, and new construction