the flat roofs of dormer windows will not normally have any visual impact and so, in this case, the use of materials such as felt, lead or zinc for flat roofs of dormers will therefore be acceptable. A.2 In the case of a dwellinghouse on article 2(3) land, development is not permitted by Class A if:

Building Regulations - Porches - Planning Portal

d) in the case of an antenna to be installed on a roof with a chimney, the highest part of the antenna would be higher than the highest part of the chimney, or 0.6 metres measured from the highest part of the ridge tiles of the roof, whichever is the lower; orGuidance on the terms ‘highest part of the roof’, ‘fronts a highway’ and ‘principal’ and ‘side’ elevations can be found in the General issues section and under Class A. Class H: microwave antenna This provides permitted development rights for the erection of a porch outside any external door of a house.

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The first question to ask yourself about any entrance is how it fits into the existing building design (if you’re renovating) and whether that doorway/entrance could have a strong impact on the balance of the building,” says Elizabeth Assaf, co-founder and designer at Urban Front. Class B covers enlargement of houses through alterations or additions to the roof and Class C covers other alterations to the roof of a house. Any buildings within the curtilage can only have one storey. Buildings with more than one storey are not permitted development and will require an application for planning permission. The total area of ground around the house covered by buildings, enclosures and containers must not exceed 50% of the total area of the curtilage, excluding the original house. The 50% limit covers all buildings, so will include any existing or proposed new extensions to the original house under Class A of the permitted development rules or that have been granted planning permission, as well as existing and proposed outbuildings. It will exclude the area covered by the original house, but will include any separate detached buildings even where they were built prior to 1948 or if the house was built after that date, built when the house itself was built (for example a detached garage). Where a new extension is joined to an existing extension, under paragraph (ja) the limits in (e) apply to the total enlargement (being the proposed enlargement together with the existing enlargement).

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the face and sides of a dormer window should be finished using materials that give a similar visual appearance to existing house. So the materials used for facing a dormer should appear to be of similar colour and design to the materials used in the main roof of the house when viewed from ground level. Window frames should also be similar to those in the existing house in terms of their colour and overall shape. Curtilage: is land which forms part and parcel with the house. Usually it is the area of land within which the house sits, or to which it is attached, such as the garden, but for some houses, especially in the case of properties with large grounds, it may be a smaller area. Original: means a building as it existed on 1 July 1948 where it was built before that date, and as it was built if built after that date. Principal elevation: in most cases the principal elevation will be that part of the house which fronts (directly or at an angle) the main highway serving the house (the main highway will be the one that sets the postcode for the house concerned). It will usually contain the main architectural features such as main bay windows or a porch serving the main entrance to the house. Usually, but not exclusively, the principal elevation will be what is understood to be the front of the house. Class A covers the enlargement, improvement or alterations to a house such as rear or side extensions as well as general alterations such as new windows and doors. There is a neighbour consultation scheme for larger rear extensions under Class A, paragraph A.1(g).

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c) any part of the dwellinghouse would, as a result of the works, extend beyond the plane of any existing roof slope which forms the principal elevation of the dwellinghouse and fronts a highway i) the enlarged part of the dwellinghouse would be within 2 metres of the boundary of the curtilage of the dwellinghouse, and the height of the eaves of the enlarged part would exceed 3 metres From straightforward screened porches to grand porticos with archways, verandas and haciendas, the choices for porch design are vast.b) the area of ground covered by the hard surface, or the area of hard surface replaced, would exceed 5 square metres The Ministry for Housing, Communities and Local Government has produced separate guidance on permeable paving. Class G: chimney, flues etc j) the enlarged part of the dwellinghouse would extend beyond a wall forming a side elevation of the original dwellinghouse, and would: