About the Old Uxbridge / Windsor Street Conservation Area
The Old Uxbridge / Windsor Street Conservation Area covers about 1.6 hectares within London Borough of Hillingdon’s area. Inside the boundary are 15 listed buildings, all Grade II. 3 Article 4 directions over the area remove 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.
- Changes of use from commercial, business and service uses to dwellinghousesChange of use
- Houses of Multiple Occupation (HMOs)Householder works
- Residential extensionsHouseholder works
- Construction of new dwellinghouses in employment areasHouseholder 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.
- 118, High StreetGrade II
- 119, High StreetGrade II
- 122 and 123, High StreetGrade II
- 126 and 126a, High StreetGrade II
- 127 and 128, High StreetGrade II
- 129-133, High StreetGrade II
- 134 and 135, High StreetGrade II
- Garden Walls to North and East of Number 118Grade II
- Old Bank HouseGrade II
- The CedarsGrade II
- The Crown and Sceptre Public HouseGrade II
- The Falcon Public HouseGrade II
- Wall Along South East Side of AlleyGrade II
- Wall to East of Number 134Grade II
- Watts Hall (old Meeting Congregational Church)Grade II
Nearby conservation areas
Boundary and listed buildings from London Borough of Hillingdon and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.