About the Pinner Hill Estate Conservation Area
The Pinner Hill Estate Conservation Area covers about 30 hectares within London Borough of Harrow’s area. Inside the boundary are 6 listed buildings, all Grade II. 1 Article 4 direction over the area removes further householder rights, on top of the conservation area limits below.
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.
- Residential extensionsHouseholder 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.
- Barns on South and West Sides of Yard at Pinner Hill FarmGrade II
- London Coal Duty Marker on County Boundary Where Road Meets Potter Street HillGrade II
- Pinner Hill Farmhouse and Brick Barn to RearGrade II
- Pinner Hill Golf Club House, And Boundary Wall Extending Northwards From Club HouseGrade II
- Pond CottageGrade II
- Tooke's Folly at Pinner Hill FarmGrade II
Nearby conservation areas
Boundary and listed buildings from London Borough of Harrow and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.