This document discusses building services and types of services provided in buildings. It describes 6 main types of building services: plumbing, electricity, gas supply, HVAC systems, fire protection, and transportation services. It also lists 10 types of building services such as communication services, security alarm systems, anti-termite treatment, and waterproofing treatment. The document further classifies building services into 4 categories: mechanical systems, electrical services, multiple services, and building operation systems. Finally, it discusses lighting and the three main aims of lighting in buildings which are to promote work activities, safety, and a pleasing environment.