Wales
New regulations came into force on 30 September 2013 which changed the building work which can be done without needing to apply for planning permission. The Welsh Government has produced a technical guide, and a householder guide, available here, to help you understand how permitted development rules might apply to your circumstances. In general, outbuildings are permitted development, not needing planning permission, subject to the following limits and conditions:
- The total area of ground covered by outbuildings cannot exceed 50% of the entire area of the curtilage.
- Outbuildings cannot be in front of the building line of the principal elevation.
- Outbuildings cannot extend beyond the side elevation of the house when the development would be any closer to a highway than the existing home, or at least 5m from the highway, whichever is nearest.
- Any part of the development within 2m of a boundary of the house cannot exceed a height of 2.5 metres.
- Any part of the development within 2m of the house cannot exceed a height of 1.5 metres.
- Outbuildings cannot exceed more than one storey.
- The height of a shed cannot exceed 4m when the building has more than one pitch (e.g., dual pitch and hipped roofs).
- The height cannot exceed 3m when the building has a single pitch or other roof forms.
- Flat roof buildings cannot exceed 2.5m in height.
- Eaves height of the building cannot exceed 2.5m.
You should always consult your local planning department or architectural service provider if you are unsure.