Adding a porch to any external door of your house is considered to be permitted development not requiring an application for planning permission provided.
Porch roof planning permission.
The ground area is not more than 3 square metres measured externally.
The ground floor area measured externally would not exceed three square metres.
Planning permission is not required for a porch provided that.
This means that small porches that run up to the sidewalk or street probably requires planning permission.
Generally porches are classified as exempt development provided that they measure less that 2sqm internally and are no higher than 3m for a flat roof construction and 4m for a pitched roof.
3 metres above ground if the roof is flat or mono pitched.
Any alteration to project no more than 150 millimetres from the existing roof plane.
You should avoid building in front of your property as this generally requires planning permission and your plans will also need to meet the following criteria.
Under pd you can make alterations to the roof of a dwelling like the introduction of rooflights as long as they do not project more than 15cm from the roof slope.
You do not normally need to apply for planning permission to re roof your house or to insert roof lights or skylights as the permitted development rules allow for roof alterations subject to the following limits and conditions.
The porch needs to be at least two meters from the road and property lines.
The planning rules for porches are applicable to any external door to the dwellinghouse.
The ground floor area measured externally would not exceed three square metres.
Any part of the porch does not exceed a.
Outbuildings must be single storey with a maximum eaves height of 2 5 metres and maximum overall height of four metres with a dual pitched roof or three metres for any other roof.
Providing the total height is under three metres and there is a separating door between the porch and the house so it is still definitely a porch then there is no requirement for planning permission.
To make a build worthwhile with enough additional space we recommend that a porch is no smaller than two square metres.
Planning permission isn t required if the porch is small enough and far enough from the roads and any property line.
Any part of the porch is not closer.
If the rooflights would extend forward of the roof plane on the elevation fronting a highway then they are not permitted under pd.
The porch can t be higher than three metres at the highest point.
Therefore the ideal size for a porch that doesn t need planning permission would be between two and three square metres.