About the Stanwell Conservation Area
The Stanwell Conservation Area covers about 3.2 hectares within Spelthorne Borough Council’s area. Inside the boundary are 22 listed buildings (1 Grade I, 1 Grade II*, 20 Grade II). The most significant is Church of St Mary, Grade I. 7 Tree Preservation Order records overlap the area; every other tree here still needs six weeks’ notice before work.
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.
- Church of St MaryGrade I
- Dunmore HouseGrade II*
- 13, High StreetGrade II
- 40b, High StreetGrade II
- 46 and 48, High StreetGrade II
- Anonymous Vault in St Mary's ChurchyardGrade II
- Boundary Wall Between No 40b and Entrance to Coachman's CottageGrade II
- Brook Cottage, Boundary Walls and Iron RailingsGrade II
- Charles Rowlls Tomb in St Mary's ChurchyardGrade II
- Cheyne CottageGrade II
- Coachman's CottageGrade II
- Forecourt Wall and Gate Piers of Dunmore HouseGrade II
- Frances Paterson Tomb in St Mary's ChurchyardGrade II
- Henry Bullock Tomb in St Mary's ChurchyardGrade II
- John Hodges Vault in St Mary's ChurchyardGrade II
- MilestoneGrade II
- Old Farm Guest HouseGrade II
- Stanwell War MemorialGrade II
- The Swan Public HouseGrade II
- The VicarageGrade II
- The Wheatsheaf Inn and Wheatsheaf CottagesGrade II
- Windsor CottageGrade II
Nearby conservation areas
Boundary and listed buildings from Spelthorne Borough Council and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.