How Large Can a Conservatory Be Without Planning Permission

To build without the need for planning permission, a conservatory can’t be any bigger than 50% of the area around the original house (including sheds and outbuildings).

How big can a conservatory be without building regs?

However, conservatories are normally exempt from building regulations when: They are built at ground level and are less than 30 square metres in floor area. The conservatory is separated from the house by external quality walls, doors or windows.

What is the maximum size conservatory?

In either case, planning permission for conservatory extensions in the UK has a maximum height limit of 4 metres for a single-storey extension. So, if you’re wondering about the planning permission for conservatories on a semi-detached house, the conservatory size limit is 6 metres and it can only be one storey high.