Certificate of lawful development for single storey extension to rear

1. Considered Against Submitted Details The application has been assessed and determined against the following plans and details; 1. Proposed plans & elevations (Dwg no. 002) received 14th May 2025
2. No Deviance From Submitted Details Any change to the details submitted and considered, no matter how minor, may change whether the development is permitted and would nullify the Certificate of Lawfulness. Any changes would therefore need either another Certificate of Lawfulness to be submitted or a full planning application or prior approval application depending on the nature / extent of the change.
3. Conditional Compliance Part 1 Class A You are advised that the development would need to comply with the conditions as provided for in The Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) Schedule 2 Part 1 Class A ‘The enlargement, improvement or other alteration of a dwellinghouse’ Which details that development is permitted by Class A subject to the following conditions; (a) the materials used in any exterior work (other than materials used in the construction of a conservatory) must be of a similar appearance to those used in the construction of the exterior of the existing dwellinghouse; (b) any upper-floor window located in a wall or roof slope forming a side elevation of the dwellinghouse must be (i)obscure-glazed, and, (ii)non-opening unless the parts of the window which can be opened are more than 1.7 metres above the floor of the room in which the window is installed; and (c) where the enlarged part of the dwellinghouse has more than a single storey, or forms an upper storey on an existing enlargement of the original dwellinghouse, the roof pitch of the enlarged part must, so far as practicable, be the same as the roof pitch of the original dwellinghouse.
4. INFORMATIVE NOTE: Conditional Compliance Part 1 Class A You are advised that the development would need to comply with the conditions as provided for in The Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) Schedule 2 Part 1 Class A ‘The enlargement, improvement or other alteration of a dwellinghouse’ Which details that development is permitted by Class A subject to the following criteria; • as a result of the works, the total area of ground covered by buildings within the curtilage of the dwellinghouse must not exceed 50% of the total area of the curtilage (excluding the ground area of the original dwellinghouse) • the height of the eaves of the part of the dwellinghouse enlarged must not exceed the eaves of the existing house or if within 2m of a boundary must not exceed 3metre • the enlarged part of the dwellinghouse being of a single storey must not (i) extend beyond the rear wall of the original dwellinghouse by more than 4 metres in the case of a detached dwellinghouse, or 3 metres in the case of any other dwellinghouse, or (ii) exceed 4 metres in height. (The extension must not adjoin any previous extensions or outbuildings as this may take the extension over the permitted allowance. • the enlarged part of the dwellinghouse must not extend beyond a wall which: (i) forms the principal elevation of the original dwellinghouse; or (ii) fronts a highway and forms a side elevation of the original dwellinghouse • the extension must be built wholly on the owner’s own land, there must be no encroachment onto the neighbouring property including foundations, overhanging guttering etc. • works cannot include verandas, balconies or raised platforms, microwave antenna (e.g. TV aerial or satellite dish), chimney, flue or soil and vent pipe or any alterations to the roof of the house.

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