A window space projecting outward from the main walls, forming a bay in a room with a roof
A dormer is a window that projects vertically from a sloping roof and are set back. (some side windows may have the same height & be set back)
Bolt on a conservatory by adding up the total number of individual windows and single doors (priced at lower rates)
typically required 30ft+ pole
price assumes they are accessible from the ground