Last checked 15 October 2026

Planning permission in Bristol

Bristol City Council publishes the local rules that sit alongside the national permitted development rights for houses. This page collects the conservation areas, Article 4 directions and design guide checked for Bristol. Project guides linked below answer a specific search, such as a rear extension.

Conservation areas

Bristol designates conservation areas for their special character and appearance, and says they have stricter planning controls than other places.

There are 33 conservation areas in Bristol. The council says they have a special character and appearance, and that it aims to preserve or enhance them.
Source: Conservation areas
Conservation areas have stricter planning controls than other places, so you might need permission before you carry out any type of development.
Source: Conservation areas
Bristol says you can see its conservation areas on the Know Your Place website, or call 0117 922 3000, or email conservation@bristol.gov.uk.
Source: Conservation areas
To find out if a property is in a conservation area, Bristol says to search for it on Planning Online and choose the Constraints tab.
Source: Guidance on planning permission for householders
If you are planning any major work in a conservation area, Bristol says you will need a pre-application enquiry so that a planning officer can visit the site and give a formal view.
Source: Planning permission in conservation areas

Article 4 directions

An Article 4 direction removes named permitted development rights in a mapped area. Bristol publishes the list, and the directions do not all cover the same work.

Some areas of Bristol are covered by Article 4 Directions. If your property is in one of these areas, you need planning permission for the works that would normally be covered by permitted development rights.
Source: Restrictions on permitted development (Article 4 Directions)
The Article 4 Direction at Land at Sherrin Way came into force on 26 July 1982. You need planning permission to make alterations and extensions to a dwellinghouse, and for boundary treatments (walls, gates and fences).
Source: Restrictions on permitted development (Article 4 Directions)
The Article 4 Direction at Henbury came into force in 1971. You need planning permission to make alterations and extensions to a dwellinghouse, and for boundary treatments (walls, gates and fences).
Source: Restrictions on permitted development (Article 4 Directions)
The Clifton Village Article 4 Direction came into force in July 1974. You need planning permission for works of alteration that affect the external appearance of the properties in Royal York Crescent, Cornwallis Crescent, Caledonia Place and West Mall.
Source: Restrictions on permitted development (Article 4 Directions)
Bristol has confirmed new Article 4 Directions for parts of Brislington, Frome Vale, Purdown, Southmead and Horfield, St George, and Westbury Park. From 1 January 2027, planning permission is required there for a change of use from a dwelling house (Class C3) to a small house in multiple occupation (Class C4).
Source: Restrictions on permitted development (Article 4 Directions)
Other directions on the same list cover different work. Examples on the page include a change of use between a dwelling house (Class C3) and a small house in multiple occupation (Class C4), and controls on gates, walls, fences, means of enclosure and hard standings.
Source: Restrictions on permitted development (Article 4 Directions)

Design guide

Bristol's design guide for house alterations and extensions is SPD 2, dated October 2005. The council links to it from its supplementary planning documents page.

Supplementary planning documents and other planning guidance · A guide for designing house alterations and extensions (SPD 2)

The points below are rules of thumb in that guide for proposals the council is assessing. They are not the national permitted development limits.

SPD 2 says that, in assessing proposals for rear extensions, the council will use a 45 degree rule of thumb. An extension should be designed so as not to cross a 45 degree line, on plan and on elevation, projected from the centre of an adjoining neighbour's nearest ground-floor habitable-room window which is perpendicular to the proposed extension.
Source: A guide for designing house alterations and extensions (SPD 2)
The guide says experience has shown that single-storey rear extensions should be designed to a maximum depth of 3.5 metres, but may need to be significantly less in the case of terraced houses.
Source: A guide for designing house alterations and extensions (SPD 2)
The guide says two-storey extensions can be problematic and in any event are unlikely to be acceptable beyond 2.75 metres. On narrow terraced properties it says they are often not possible, because of unreasonable loss of daylight or outlook, or a detrimental sense of enclosure.
Source: A guide for designing house alterations and extensions (SPD 2)
The guide says the council will generally accept extensions that meet those criteria, although it may relax the standards depending on the type or size of property, its location within the city, and the historic context.
Source: A guide for designing house alterations and extensions (SPD 2)

Timescales

Bristol says decisions on a planning application are usually given within eight weeks, or up to 13 weeks for major work. That period includes a statutory 21 day consultation with neighbours and other interested parties.
Source: Planning permission in conservation areas

Project guides

Rear extensionA rear extension in Bristol needs planning permission unless permitted development applies. Larger single-storey extensions are excluded in a conservation area.