single storey extensions
You have the option to expand your house without going through the process of applying for planning permission by following the rules known as ‘permitted development’ rights. However, if you wish to go beyond these rules, you will most likely need to apply for householder planning permission. Additionally, if the extension adds more than 100 square metres of floor space, there may be a charge under the Community Infrastructure Levy
REQUIREMENTS for single storey extensions built under permited development
HALF THE LAND
Extensions or other buildings can only cover half of the land surrounding the “original house”.
HEIGHT
Extensions must not exceed the highest point of the current roof or surpass the existing eaves at the eaves. Or exeed four meters in height.
BOUNDARY
The height at the eaves must not exceed three meters when the extension is within two meters of the boundary.
SIZE
A detached house cannot have a single-storey rear extension that extends beyond the rear wall of the original house by more than four meters. For any other type of house, the extension cannot exceed three meters beyond the rear wall.
MATARIALS
The materials utilized for any exterior project should have a comparable look to the ones already present on the outside of the house. the work cannot include any cladding of the exterior either.
FRONT ELEVATION
Extension cannot be built forward of the ‘principal elevation’ or, where it fronts a highway, the ‘side elevation’
NOTE
The project should not involve any verandas, balconies, or raised platforms. Additionally, it should not include any microwave antennas (such as TV aerials or satellite dishes), chimneys, flues, soil and vent pipes, or any modifications to the roof of the current house.
ORIGIOANL HOUSE
Also referred to as the ‘original dwelling’, this term denotes the house in its initial form, either as it was originally constructed or as it existed on 1 July 1948 (if it was built prior to that date).
Even if you haven’t made any additions to the house, it’s possible that a previous owner may have done so.
BOUNDARY DEFONITION
Also referred to as the ‘perimeter of the curtilage’, this refers to the outer limit of the enclosed space surrounding the house. It could be a wall or fence separating houses or gardens, or even the wall of a neighboring building.
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