Changes to permitted development rights on agricultural buildings

In very short summary, PD rights now cover former agricultural buildings, allowing rear single storey extensions and other works to allow conversion, and some of the floorspace allowances have been increased.

Or a slightly longer summary:

Part 3 Class Q:
– Allows change of use from agricultural building/former agricultural building to C3 (dwellinghouses).
– Now permits a single-storey rear extension.
– Limits up to 10 dwellinghouses with a maximum floor space of 150m2 each, not exceeding 1,000m2 cumulatively.
– Allows protrusions of up to 0.2m.
– Requires prior approval for single-storey rear extension’s impact on adjoining premises’ amenity.

Part 3 Class R:
– Allows change of use from agricultural building to various uses including B2, B8, C1, E, F.2(c), or agricultural training.
– Floor space limit increased from 500m2 to 1,000m2.

Part 3 Paragraph W:
– developers must specify proposed and previous dwellinghouse numbers and floor space for Class Q.

Part 3 Paragraph X:
– Removed definition of “curtilage” for Class Q.

Part 6 Class A:
– Ground area limit increased from 1,000m2 to 1,500m2.
– Does not apply to scheduled monuments for erection/extension.

Part 6 Class B:
– Cubic content limit increased from 20% to 25%, ground area limit increased from 1,000m2 to 1,250m2.
– Does not apply to scheduled monuments for extension.