Planning in Welwyn Hatfield
Welwyn Hatfield Borough Council has 10 conservation areas and 0 Article 4 direction areas on the national planning data platform.
Conservation areas
10
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 Welwyn Hatfield and tells you whether your extension, loft conversion or change of use needs planning permission.
Conservation areas
- Ayot Greendesignated 1 January 1969
- Ayot St Lawrencedesignated 1 January 1969
- Ayot St Lawrencedesignated 1 January 1969
- Beehivedesignated 15 September 1999
- Essendondesignated 1 January 1968
- Northaw Villagedesignated 4 February 1983
- Old Hatfielddesignated 1 January 1968
- Peartree
- Welwyndesignated 6 October 1969
- Welwyn Garden Citydesignated 7 October 1968
Article 4 directions
No Article 4 directions published on the platform yet.
Frequently asked questions
Is my property in a conservation area in Welwyn Hatfield?
Welwyn Hatfield Borough Council has designated 10 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. Welwyn Hatfield 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.
Welwyn Hatfield 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