"Services" typically refers to the various systems and installations that are essential for the operation and functionality of a building. These services are integral to ensuring that the building is safe, comfortable, and efficient for its occupants.

The main categories of building services in commercial construction include:

1. Mechanical Services: This includes heating, ventilation, and air conditioning (HVAC) systems. These systems are crucial for maintaining indoor air quality and thermal comfort.

2. Electrical Services: This encompasses all electrical installations, including power distribution, lighting, emergency lighting, and backup power systems. It also covers telecommunications and data systems.

3. Plumbing and Drainage: This involves the installation of water supply systems, waste disposal, and drainage systems. It also includes fire suppression systems like sprinklers.

4. Fire Protection Services: These are systems designed to detect and respond to fires, including alarms, sprinklers, smoke control systems, and emergency evacuation systems.

5. Security and Access Control: This includes systems for building security, such as CCTV, access control systems, and intruder alarms.

6. Vertical Transportation: This refers to elevators and escalators, which are essential for the movement of people and goods within multi-story buildings.

7. Building Automation and Control Systems: These systems manage and control building services to improve efficiency and performance, often integrating HVAC, lighting, and other systems for centralized control.

8. Specialized Systems: Depending on the building's purpose, there may be additional services such as laboratory gas systems, medical gases, or industrial exhaust systems.

In Australian commercial construction, these services must comply with national standards and regulations, such as the National Construction Code (NCC) and relevant Australian Standards, to ensure safety, reliability, and efficiency.