What is Permitted Development? Do I need planning permission?

You want to extend your kitchen or enlarge your dining room. Do you know the rules for permission to plan and build this extension? Did you hear the ‘permitted development?’ For certain buildings you don’t have to apply planning permission to the city council provided certain limits and conditions are met.

Your extension is considered as permitted development if you have a house. The permitted development allowances apply to only houses. Otherwise, if you have a flat, maisonette or other buildings; you do not have the privilege of a no application for the planning permission. However, you should provide certain limits and conditions.

Interior View of a Rear kitchen Extension.

In the UK, the four basic groups as England, Wales, Scotland and Ireland have slightly different terms of conditions in their acts.  In this article, we will discuss what are these criteria for ‘the permitted development’ of the residential extensions in Scotland? 

i- Extensions of a single storey building;

1- On designated land, which are national parks and the Broads, Areas of Outstanding Natural Beauty, conservation areas and World Heritage Sites, cladding of any part of the exterior of a dwelling (and extensions) with stone, artificial stone, pebble dash, render, timber, plastic or tiles is not permitted development. 

It is a ‘Class A’ category work, and described as; ‘the enlargement, improvement or other alteration of a dwelling house.

– Edinburgh City Council

1- On designated land, which are national parks and the Broads, Areas of Outstanding Natural Beauty, conservation areas and World Heritage Sites, cladding of any part of the exterior of a dwelling (and extensions) with stone, artificial stone, pebble dash, render, timber, plastic or tiles is not permitted development. 

2- The total area of your extensions can’t exceed the more than half of your original main building. 

3- You can build your extensions forward of the principal elevation or side elevation of a house and fronting a highway

4- You can do a side extension on designated lands

5- Width of the side extension must not have a width greater than half the width of the original house.

6- Side extensions to be single-storey with a maximum height of four metres.

7- Side extensions to be single-storey with a maximum height of four metres.

8- If the extension is within two metres of a boundary maximum eaves’ height should be no higher than three metres to be permitted development.

9- Single-storey rear extension must not extend beyond the rear of the original house by more than 3 meters an attached house or by 4 meters if a detached house. 

In addition, outside designated land and Sites of Special Scientific Interest, the limit is increased to 6 meters if an attached house and 8 meters if a detached house until 30 May 2019. 

These increased limits (between 3 meters and 6 meters and between 4 meters and 8 meters respectively) are subject to the neighbour consultation scheme. 

10. Single storey rear extension must not exceed a height of four metres. 

11. Maximum eaves and ridge height of extension no higher than the existing house.

ii- Extensions of a two-storey rear building;

1- You are not allowed to build more than one storey extension on designated lands. 

2- The total area of your extensions can’t exceed the more than half of your original main house. 

3- Maximum eaves and ridge height of extension no higher than the existing house. If the extension is within two metres of a boundary maximum eaves’ height should be no higher than three metres to be permitted development.

4- Extensions of more than one storey must not extend beyond the rear wall of the original house by more than three metres or be within seven metres of any boundary opposite the rear wall of the house.

5- Roof pitch of extensions higher than one storey to match that of the existing house, as far as is practicable.

6- Materials used in exterior work to be similar in appearance to those of the exterior of the existing house.

7- Any upper-floor window in a wall or roof slope in a side elevation must be obscured- glazed and non-opening unless the parts which can be opened are more than 1.7 metres above the floor of the room in which it is installed.

8- No balconies or verandas are permitted development.

You can reach the source at; ‘the planning portal ‘ of the Edinburgh City Council.

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