In general, knockdown rebuilds involve demolishing an existing property and building a new one in its place. As such, there are likely to be several disconnections that need to be managed during the process.

The specific disconnections that may need to be managed will depend on the location and type of property. However, here are some of the most common disconnections that may need to be arranged:

1. Electricity disconnection: This involves disconnecting the existing electricity supply to the property before demolition begins.
2. Gas disconnection: If the property is connected to a gas supply, it must be disconnected before demolition can occur.
3. Water disconnection: The water supply to the property will need to be disconnected before demolition can begin.
4. Sewer disconnection: The sewer line to the property will need to be disconnected before the demolition work can start.
5. Telecommunication disconnection: The property may be connected to a telecommunications network, such as a phone or internet, which must be disconnected.

In addition to these disconnections, other services may need to be disconnected, such as cable TV or solar panels.

It is important to note that these disconnections will need to be managed by qualified professionals, such as electricians, gas fitters, and plumbers. Your builder or contractor can advise you on the specific disconnections that need to be arranged for your knockdown rebuild project and can help you arrange them.