Planning in Hertsmere
Hertsmere Borough Council has 16 conservation areas and 0 Article 4 direction areas on the national planning data platform.
Conservation areas
16
Article 4 directions
0
Listed building outlines
–
Planning applications
–
not published yet
Check what you can build — with AI
Planium reads the conservation area appraisal, Article 4 directions and local plan policies for Hertsmere and tells you whether your extension, loft conversion or change of use needs planning permission.
Conservation areas
- Aldenhamdesignated 22 January 1973
- Bushey Heath High Roaddesignated 28 March 1990
- Bushey Heath The Lakedesignated 23 October 1998
- Bushey High Streetdesignated 22 January 1973
- Bushey Melbourne Roaddesignated 1 January 1973
- Elstree Villagedesignated 4 August 1976
- Letchmore Heathdesignated 6 October 1969
- Patchetts Green and Delrowdesignated 23 October 1998
- Potters Bar Darkes Lane (West)designated 19 June 2012
- Potters Bar The Roydsdesignated 25 May 2000
- Radlett Northdesignated 20 April 1988
- Radlett Southdesignated 20 April 1988
- Ridgedesignated 28 June 1978
- Round Bushdesignated 28 June 1978
- Shenley Villagedesignated 24 March 1969
- South Mimmsdesignated 24 March 1969
Article 4 directions
No Article 4 directions published on the platform yet.
Frequently asked questions
Is my property in a conservation area in Hertsmere?
Hertsmere Borough Council has designated 16 conservation areas, listed on this page with their designation dates and appraisal documents where the council publishes them. In a conservation area, permitted development rights are narrower: cladding, some extensions, roof alterations and satellite dishes on the front elevation may need planning permission, and demolition of most buildings needs consent.
What is an Article 4 direction?
An Article 4 direction removes specific permitted development rights in a defined area, so work that would normally not need planning permission — for example replacing windows, changing a house into a small HMO or altering front boundaries — does need an application. Hertsmere has 0 Article 4 direction areas recorded on planning.data.gov.uk.
How do I check what I am allowed to build?
Start with the designations on the site (conservation area, Article 4, listed building), then the local plan policies and any design codes. Planium can read the council’s appraisal and policy documents and summarise what applies to your project, including whether permitted development is available.
Hertsmere Borough Council website · All local planning authorities
Source: planning.data.gov.uk (Ministry of Housing, Communities and Local Government) (Open Government Licence v3.0) · Retrieved 2026-10-09