About the Westmill Conservation Area
The Westmill Conservation Area covers about 19 hectares and was designated by East Hertfordshire District Council in 1968. Inside the boundary are 28 listed buildings (3 Grade II*, 25 Grade II). The most significant is Barn Range at Westmill Bury Farm (100 Metres to North of the Bury), Grade II*. Part of the area lies in flood zone 3, so an extension may need a flood risk assessment.
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.
- Barn Range at Westmill Bury Farm (100 Metres to North of the Bury)Grade II*
- Parish Church of St Mary the Virgin (church of England)Grade II*
- Westmill BuryGrade II*
- Archers HallGrade II
- Barn at Vine House (30 Metres to North of House)Grade II
- Church CottagesGrade II
- Church HouseGrade II
- Dial CottageGrade II
- Enever Monument in St Mary's Churchyard (8 Metres to South of Chancel)Grade II
- Gaylors Barn (40 Metres to South of Old Gaylors)Grade II
- Granary at Westmill Bury Farm (80 Metres to North North West of the Bury)Grade II
- K6 Telephone KioskGrade II
- Lane End CottagesGrade II
- Little BuryGrade II
- Old GaylorsGrade II
- Old ThatchGrade II
- Outbuilding at Westmill Bury (50 Metres to North West of the Bury)Grade II
- Pilgrims CloseGrade II
- Pilgrims RowGrade II
- SissonsGrade II
- The Dial HouseGrade II
- The PilgrimageGrade II
- The Sword in Hand Public HouseGrade II
- Tomb in St Mary's Churchyard (4 Metres to South of Chancel)Grade II
Show all 28 listed buildings ↓All 28 listed buildings
The council’s appraisal
WEBWestmill Conservation Area AppraisalEast Hertfordshire District 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 East Hertfordshire District Council and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.