Extensions -

Single storey - A room or a room extension with Flat roof or a vaulted ceiling that uses the pitched roof space.

Multi-storey - A multi-storey extension can be built to any part of the existing building.

Wrap around - Wrap around are created by combining a side return extension and a rear extension together.

An Over-structure - An extension over the top of an existing structure such as a garage, a living / dining room or kitchen.

Porches - Small extensions to the front of a house, although they can be much larger and can be built to the side or back.

Sunrooms - A sunroom is essentially a conservatory with a solid roof and walls, including plenty of glazing.