About the Streatham High Road & Streatham Hill Conservation Area
The Streatham High Road & Streatham Hill Conservation Area covers about 24 hectares and was designated by London Borough of Lambeth in 1999. Inside the boundary are 13 listed buildings (1 Grade II*, 12 Grade II). The most significant is Roman Catholic Church of the English Martyrs, Grade II*. 2 Article 4 directions over the area remove further householder rights, on top of the conservation area limits below. 30 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.
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.
- Modified Direction 3 - Town CentresHouseholder works
- LEIGHAM COURT ESTATEHouseholder works
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.
- Roman Catholic Church of the English MartyrsGrade II*
- 177, Streatham High RoadGrade II
- Abc CinemaGrade II
- Church of St LeonardGrade II
- Dyce Drinking FountainGrade II
- Electricity Sub-StationGrade II
- English Martyrs PresbyteryGrade II
- Monument to George Abell South of West End of St Leonards ChurchGrade II
- Monument to Joseph Hay North of West End of St Leonards ChurchGrade II
- Monument to Lieutenant Colonel William Boyce North of West End of St Leonards ChurchGrade II
- Monument to Thomas Helps East of St Leonards ChurchGrade II
- Streatham Hill TheatreGrade II
- Streatham Tate Library and HallGrade II
Nearby conservation areas
Boundary and listed buildings from London Borough of Lambeth and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.