4A Belgrave Mews West London SW1X 8HT Data via plota.co.uk
Proposal
Installation of an air source heat pump at roof level. Data via plota.co.uk
Application progress
Refused on 30 Apr 2026 · Delegated Decision · Last checked 14 Oct 2026
Documents 13
Decision & officer reports 2
Statements & assessments 2
Plans & drawings 4
Application forms 1
Consultation & comments 1
Site constraints 8
Show all 33 with distances
- 13 mThe Star TavernGrade II
- 23 m7-14 Chesham Place Including 2-6 Lowndes StreetGrade II
- 29 m4, Halkin Place Sw1Grade II
- 30 mMews Arch Adjoining West of Numbers 7 and 8Grade II
- 36 m13-23, Belgrave Square Sw1Grade I
- 38 m3, Halkin Place Sw1Grade II
- 49 m9-11, HALKIN PLACE SW1 (See details for further address information)Grade II
- 59 m4-6, West Halkin Street Sw1Grade II
- 62 m1, Halkin Place Sw1Grade II
- 63 m15,16 and 17, Chesham Place Sw1Grade II
- 65 m42, 43 and 44, Lowndes Street Sw1Grade II
- 81 m14, 15 and 16, West Halkin StreetGrade II
- 86 mMews Arch to Southern End of Belgrave Mews WestGrade II
- 91 m2-12 Halkin Arcade and 27 and 28 Motcomb Street and 11a West Halkin StreetGrade II
- 91 m12, Belgrave Square Sw1Grade I
- 100 m11, West Halkin StreetGrade II
- 104 m12A AND 14, LOWNDES STREET SW1 (See details for further address information)Grade II
- 109 mRailings Gates and Gate Piers to Number 12Grade II*
- 110 m1-8, Motcomb Street Sw1Grade II
- 112 m21-27, Cadogan Place Sw1Grade II
- 113 m29-37 Chesham PlaceGrade II
- 115 m38, Chesham Place Sw1Grade II
- 126 m1-3, Wilton Terrace Sw1Grade II
- 129 mK6 Telephone Kiosk Outside Number 28Grade II
- 131 mK6 Telephone Kiosk Outside Number 27Grade II
- 136 mLowndes HouseGrade II
- 136 mSpanish EmbassyGrade I
- 137 m1-11, Belgrave Square Sw1Grade I
- 139 m11-18, MOTCOMB STREET SW1 (See details for further address information)Grade II
- 139 mPantechniconGrade II
- 139 mRailings and Gatepiers Gates to Number 24Grade II*
- 142 mNumbers 20-23 and 23a Motcomb Street and Number 15 Lowndes StreetGrade II
- 143 m15 and 17, Pont Street Sw1Grade II
Checked on 2 November 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Sales history 1
Last sold for £5,850,000 in August 2021. Terraced house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Building
From the energy performance certificate lodged in July 2013, the latest held for this property. The building may have changed since. View the certificate
Every application in Westminster - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Westminster
- Application type
- Certificate of Lawfulness (proposed)
- Postcode
- SW1X 8HT
- Received
- 12 Aug 2025
- Validated
- 1 Oct 2025
- Ward
- Knightsbridge & Belgravia
- Case officer
- Show
- Target decision
- 26 Nov 2025
- Decision
- Application Refused
- Decision date
- 30 Apr 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Alexander Martin Architects Limited
How this decision compares
Decided in 211 days from validation, 158 days slower than Westminster's median of 53 for lawful development certificates. Refused, as 20% of lawful development certificates here are.
Plota live figures for lawful development certificates decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
Last counted 14 Oct 2026
Consultation & key dates
- Alt. reference
- PP-14222083
- Planning Portal ref
- PP-14222083
- Env. assessment
- No
Historical activity at this location
27 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
Westminster is slower than most councils at deciding householder applications, ranking #258 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Westminster is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.
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4A Belgrave Mews West London SW1X 8HT
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