double 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 double 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.
ROOF
The roof slope should closely match the existing house as much as possible. This rule also applies to any additional floor constructed on an existing extension.
SIZE
Extensions that exceed one storey should not protrude beyond the back wall of the original house by more than three meters or be within seven meters of any boundary that is directly across from the back wall of the house.
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 & SIDE ELEVATION
Extension cannot be built forward of the front elevation, to the side elevations or where it fronts a highway.
WINDOWS
Any window on an upper floor that is situated on the side of a building must have obscured glass and should not be able to open, unless the part that can be opened is positioned more than 1.7 meters above the floor.
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.
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