About the Welwyn Garden City Conservation Area
The Welwyn Garden City Conservation Area covers about 247 hectares and was designated by Welwyn Hatfield Borough Council in 1968. Inside the boundary are 11 listed buildings (1 Grade II*, 10 Grade II). The most significant is Templewood School, Grade II*.
What changes inside the conservation area
Conservation areas are “Article 2(3) land”. You keep most permitted development rights, but these are removed or tightened.
- Rear extensionElsewhere: 3 m · 6 m with PANo 6 m / 8 m prior approval
- Two-storey extensionElsewhere: 3 mNeeds planning permission
- Side extensionElsewhere: Half the widthNeeds planning permission
- Loft conversionElsewhere: 50 m³Needs planning permission
- Garden roomElsewhere: 2.5 m high by boundariesNot beside the house
- PorchElsewhere: 3 m²Same limits
- Solar panelsElsewhere: 0.2 m projectionSame limits
- Air source heat pumpElsewhere: 1 unitNot facing the road
- Fences, walls and gatesElsewhere: 2 m · 1 m by a roadSame limits
- External claddingElsewhere: Matching materialsNeeds planning permission
- Tree workElsewhere: No notice6 weeks’ notice to the council
- Demolition (over 115 m³)Elsewhere: AllowedNeeds planning permission
Limits for a semi-detached house under the GPDO 2015. An Article 4 direction can remove more.
Listed buildings in the conservation area
Any work affecting these needs listed building consent, inside or out. Each links to its entry on the National Heritage List.
- Templewood SchoolGrade II*
- 104-124, KnightsfieldGrade II
- 105-125, KnightsfieldGrade II
- 26, Pentley ParkGrade II
- 82-102, KnightsfieldGrade II
- 83-103, KnightsfieldGrade II
- Digswell LodgeGrade II
- Hand Side FarmhouseGrade II
- The Backhouse RoomGrade II
- The Barn TheatreGrade II
- The Old CottageGrade II
The council’s appraisal
WEBWelwyn Garden City Conservation Area AppraisalWelwyn Hatfield Borough Council’s description of the area’s character — what planners look at when you apply.Open on council site ↗Nearby conservation areas
Boundary and listed buildings from Welwyn Hatfield Borough Council and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.