About the The Butts Conservation Area
The The Butts Conservation Area covers about 6.3 hectares and was designated by London Borough of Hounslow in 1968. Inside the boundary are 18 listed buildings (1 Grade II*, 17 Grade II). The most significant is 24, The Butts, 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.
Article 4 directions here
These overlap the conservation area. Householder directions remove more of the rights above; change-of-use ones don’t affect extending a house.
- Dwellinghouses (C3) to small HMOs (C4) - borough-wide Article 4 DirectionChange of use
- Change of use or development that would result in new dwellings (Class MA/ZA)Change of use
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.
- 24, The ButtsGrade II*
- 16 and 18, The ButtsGrade II
- 17, Somerset RoadGrade II
- 19, Market PlaceGrade II
- 19, The ButtsGrade II
- 20 and 22, The ButtsGrade II
- 26, The ButtsGrade II
- 26a, The ButtsGrade II
- 30 and 32, The ButtsGrade II
- 36a, The ButtsGrade II
- 40, The ButtsGrade II
- 42-46, The ButtsGrade II
- Beaufort House Chatam HouseGrade II
- Cobden House Linden HouseGrade II
- Gates and screen of St Mary's ConventGrade II
- Glan HelenGrade II
- St Mary's ConventGrade II
- The CedarsGrade II
Streets in the conservation area
Streets with listed buildings inside the boundary. Boundaries often split a street — check your exact address.
Nearby conservation areas
Boundary and listed buildings from London Borough of Hounslow and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.