Enables character to change building type. This process reduces era of building by 1 level and completion by 50%.

Base busy seconds:	Building completion multiplied by 5 using machine-construction.	Building completion multiplied by 50 using tool.
Danger:	Regular if using tool.	Slight if using machine.
Required pieces:	n/a
Required skill:	Construction.
Required appearance:	Laborer.
Pollution created:	Amount of reduction divided by 10.
Waste created:	Same amount as completion reduction.