Planning in Harpenden: check before you build
In England most garden rooms count as permitted development, within limits on height, size and position. The rules are tighter in conservation areas, on listed properties and in protected landscapes such as the Chilterns National Landscape. Planning applications in Harpenden go to St Albans City and District Council.
What your builder checks for your plot
- The height of the room, and how near it is to your boundary
- How far it is from the house, and its floor area
- Whether your home is in a conservation area or listed
- Whether anyone will sleep in it, because building regulations then apply
General guidance, not legal advice. Check the rules on the Planning Portal and with St Albans City and District Council.
What people build in AL5
Home offices
For the days you work from home instead of commuting.
Garden gyms
Room for kit that will not fit in the house.
Annexes
Space for family or guests on larger plots.