St James'sConservation Area

What being inside the St James's Conservation Area means for extensions, lofts, windows and trees — and how to check whether your house is inside the boundary.

Designated

1990

Size

38 ha

Listed buildings inside

196

Article 4

1 found

250 m
Conservation area Listed building

About the St James's Conservation Area

The St James's Conservation Area covers about 38 hectares and was designated by City of Westminster in 1990. Inside the boundary are 196 listed buildings (30 Grade I, 43 Grade II*, 123 Grade II). The most significant is 15, St James's Square Sw1, Grade I. 1 Article 4 direction over the area removes further householder rights, on top of the conservation area limits below. 12 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.

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.

  • Article 4 Basement Development Permitted Rights RemovedHouseholder works
  • Article 4 Direction Class E To C3 In Central Activities ZoneChange 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.

Show all 196 listed buildings ↓

Streets in the conservation area

Streets with listed buildings inside the boundary. Boundaries often split a street — check your exact address.

St James's PlaceBury StreetDuke Street

The council’s appraisal

WEBSt James's Conservation Area AppraisalCity of Westminster’s description of the area’s character — what planners look at when you apply.Open on council site ↗

Nearby conservation areas

Boundary and listed buildings from City of Westminster and Historic England via planning.data.gov.uk (OGL). Guidance only — not an official council check.