Conservation areas in City of Westminster: check any London (Westminster) postcode
The highest concentration of Grade I buildings in England, with dozens of conservation areas. Enter your postcode to see whether it falls inside a published conservation area, whether an Article 4 direction applies, and what you cannot do without permission — as a £7.99 PDF.
Boundaries come from the council's own publication to planning.data.gov.uk. Historic England listing data is national and complete.
Live example: SW1A 1AA
- livePostcode → council, country & OS grid reference — postcodes.io (ONS)
- liveListed buildings, grade & list date (points + outlines) — Historic England NHLE open GISWhole of England, updated by Historic England
- liveScheduled monuments · parks & gardens · World Heritage Sites — Historic England NHLE open GIS
- liveConservation areas — planning.data.gov.uk (MHCLG)Coverage depends on each council publishing to the platform
- liveArticle 4 direction areas — planning.data.gov.uk (MHCLG)
- liveConsent rules engine (England) — LBA 1990 · TCPA 1990 · GPDO 2015 · AMAA 1979
Demolition, side and two-storey rear extensions, roof changes, front-facing panels and dishes, and work to trees are all controlled here; an Article 4 direction also applies.
Article 4 direction in force here — see which rights it removes on Article4Check UK.
Open the full check for SW1A 1AAWhat a conservation area means in City of Westminster
City of Westminster must pay special attention to preserving or enhancing the area's character when deciding any application. Demolition needs planning permission, permitted development is cut back (no side or two-storey rear extensions, dormers or cladding without an application), and six weeks' notice is required before work to trees. Unauthorised demolition and tree works are criminal offences.
Is the building itself listed? Use the listed building check for City of Westminster.
Other councils: Bath and North East Somerset · City of York · Oxford · Cambridge · Cheltenham · Cheshire West and Chester · Canterbury · Brighton and Hove · all