Permitted Development
The enlargement of a dwellinghouse consisting of the construction of—
- (a)up to two additional storeys, where the existing dwellinghouse consists of two or more storeys; or
- (b)one additional storey, where the existing dwellinghouse consists of one storey,
Development Not Permitted
Development is not permitted by Class AA if—
- (a)permission to use the dwellinghouse as a dwellinghouse has been granted only by virtue of Class G, M, MA, N, O, P, PA or Q of Part 3 of this Schedule (changes of use);
- (b)the dwellinghouse is located on—
- (i)article 2(3) land; or
- (ii)a site of special scientific interest;
- (c)the dwellinghouse was constructed before 1st July 1948 or after 28th October 2018;
- (d)the existing dwellinghouse has been enlarged by the addition of one or more storeys above the original dwellinghouse, whether in reliance on the permission granted by Class AA or otherwise;
- (e)following the development the height of the highest part of the roof of the dwellinghouse would exceed 18 metres;
- (f)following the development the height of the highest part of the roof of the dwellinghouse would exceed the height of the highest part of the roof of the existing dwellinghouse by more than—
- (i)3.5 metres, where the existing dwellinghouse consists of one storey; or
- (ii)7 metres, where the existing dwellinghouse consists of more than one storey;
- (g)the dwellinghouse is not detached and following the development the height of the highest part of its roof would exceed by more than 3.5 metres—
- (i)in the case of a semi-detached house, the height of the highest part of the roof of the building with which it shares a party wall (or, as the case may be, which has a main wall adjoining its main wall); or
- (ii)in the case of a terrace house, the height of the highest part of the roof of every other building in the row in which it is situated;
- (h)the floor to ceiling height of any additional storey, measured internally, would exceed the lower of—
- (i)3 metres; or
- (ii)the floor to ceiling height, measured internally, of any storey of the principal part of the existing dwellinghouse;
- (i)any additional storey is constructed other than on the principal part of the dwellinghouse;
- (j)the development would include the provision of visible support structures on or attached to the exterior of the dwellinghouse upon completion of the development; or
- (k)the development would include any engineering operations other than works within the curtilage of the dwellinghouse to strengthen its existing walls or existing foundations.
Conditions
—(1) Development is permitted by Class AA subject to the conditions set out in sub-paragraphs (2) and (3).
(2) The conditions in this sub-paragraph are as follows—
- (a)the materials used in any exterior work must be of a similar appearance to those used in the construction of the exterior of the existing dwellinghouse;
- (b)the development must not include a window in any wall or roof slope forming a side elevation of the dwelling house;
- (c)the roof pitch of the principal part of the dwellinghouse following the development must be the same as the roof pitch of the existing dwellinghouse; and
- (d)following the development, the dwellinghouse must be used as a dwellinghouse within the meaning of Class C3 of the Schedule to the Use Classes Order and for no other purpose, except to the extent that the other purpose is ancillary to the primary use as a dwellinghouse.
(3) The conditions in this sub-paragraph are as follows—
- (a)before beginning the development, the developer must apply to the local planning authority for prior approval as to—
- (b)before beginning the development, the developer must provide the local planning authority with a report for the management of the construction of the development, which sets out the proposed development hours of operation and how any adverse impact of noise, dust, vibration and traffic on adjoining owners or occupiers will be mitigated;
- (c)the development must be completed within a period of 3 years starting with the date prior approval is granted;
- (d)the developer must notify the local planning authority of the completion of the development as soon as reasonably practicable after completion; and
- (e)that notification must be in writing and include—
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Many forms of Permitted Development have conditions and a requirement for a Prior Approval application. Contact us to discuss your project.
Content in this section is from Schedule 2 of the The Town and Country Planning (General Permitted Development) (England) Order 2015.
Made available under Open Government License 3.0.
