Planning permission in Barnet

London Borough of Barnet decides planning applications in Barnet. This page shows the protected areas that affect what homeowners can build without planning permission, and the planning data Barnet publishes.

Conservation areas

Barnet has 16 conservation areas. In a conservation area, permitted development rights are reduced: side extensions, two-storey extensions, loft dormers and cladding all need planning permission, and many councils add Article 4 directions on top.

• College Farm
• Finchley Church End
• Finchley Garden Village
• Glenhill Close
• Golders Green
• Hampstead Garden Suburb
• Hampstead Village (Heath Passage)
• Hendon Church End
• Hendon the Burroughs
• Mill Hill
• Monken Hadley
• Moss Hall Crescent
• Railway Terraces
• The Watling Estate
• Totteridge
• Wood Street

Read more: extensions, loft dormers, garden rooms and solar panels in a conservation area.

Article 4 directions

Barnet has published 48 Article 4 areas. Inside them, some permitted development rights are removed, so work that would normally be allowed needs planning permission.

The rights they remove most often:

• Walls, fences and gates (Part 2 Class A, in 43 of the areas)
• Painting the outside of a building (Part 2 Class C, in 41 of the areas)
• House extensions (Part 1 Class A, in 41 of the areas)
• Other roof alterations, such as rooflights (Part 1 Class C, in 41 of the areas)
• Porches (Part 1 Class D, in 41 of the areas)
• Garden buildings and outbuildings (Part 1 Class E, in 41 of the areas)
• Hard surfaces, such as paved driveways (Part 1 Class F, in 41 of the areas)
• Satellite dishes and antennas (Part 1 Class H, in 38 of the areas)
• Demolishing walls, fences and gates (Part 11 Class C, in 27 of the areas)
• Chimneys, flues and soil pipes (Part 1 Class G, in 16 of the areas)

Directions listed by Barnet:

• Article 4 Agricultural Land Restriction
• Article 4 for Finchley Garden Village CA
• Article 4 for Glenhill Close CA
• Article 4 for Hampstead Garden Suburb CA
• Article 4 for Hendon the Burroughs CA
• Article 4 for Mill Hill CA
• Article 4 for Monken Hadley CA
• Article 4 for Moss Hall Crescent CA
• Article 4 for Totteridge CA
• Article 4 for Wood Street CA
• Article 4 Small Houses in Multiple Occupation (HMO)
• Article 4(2) for Finchley Church End CA
• Article 4(2) for Mill Hill CA
• Article 4(2) for Monken Hadley CA
• Article 4(2) for Totteridge CA

What is an Article 4 direction?

National parks, National Landscapes and green belt

• There is green belt in or bordering Barnet. Householder permitted development rights apply as normal in the green belt, but if you need planning permission, green belt policy limits how much a home can be enlarged.

Listed buildings and protected trees

Listed buildings everywhere in England are recorded by Historic England, and the checker looks for them at every address. Barnet also publishes 651 listed building outlines, which show exactly which building is listed.

Barnet publishes its tree preservation orders (9,420 areas and individual trees), so we can flag protected trees near an address.

What Barnet publishes

Data from planning.data.gov.uk, published by London Borough of Barnet and national bodies under the Open Government Licence, last updated here on 30 October 2026. London Borough of Barnet website.