18 Eaton Mews South London SW1W 9HP Data via plota.co.uk
Proposal
Creation of roof terrace at main roof level, accessed via a sliding box access rooflight and enclosed by black painted metal railings set back from the rear roof edge; Installation of projecting balcony, with black painted vertical metal railings and a curved lead canopy to first floor front elevation; alterations to entrance door arrangement, bringing the door forward to align with the front elevation; and other associated works. Data via plota.co.uk
Application progress
Approved on 25 Aug 2026 · Delegated Decision · Last checked 26 Aug 2026
Documents 15
Decision & officer reports 2
Statements & assessments 1
Plans & drawings 3
Application forms 1
Consultation & comments 1
Other documents 7
Site constraints 10
Show all 20 with distances
- 4 m8 to 23 Eaton Square including 57 Lower Belgrave StreetGrade II*
- 16 m1-13, Chester Square Sw1Grade II
- 37 m84-88, Chester Square Sw1Grade II
- 60 mNos 77 to 80 (consec), 80a and Mews Arch, Chester SquareGrade II
- 62 mNos 24 and 24a to 48 (consecutive) including Nos 72 and 72a Elizabeth StreetGrade II*
- 64 m14-23, Chester Square Sw1Grade II
- 77 m49-55, Lower Belgrave Street Sw1Grade II
- 82 m65-76, Chester Square Sw1Grade II
- 93 m47, Lower Belgrave Street Sw1Grade II
- 110 m16-46, Lower Belgrave Street Sw1Grade II
- 113 m1-7, Eaton Square Sw1Grade II
- 113 m22, 22a, 22b and 22d, Ebury Street W1Grade II
- 113 m46-63 Chester Square Including No. 39 Eccleston StreetGrade II
- 125 m24-32, Eccleston Street Sw1Grade II
- 129 mThe Plumbers Arms Public HouseGrade II
- 134 m24-32, Chester Square Sw1Grade II
- 136 m4-12 Lower Belgrave Street and 16 Ebury Street Sw1Grade II
- 140 m103-118, Eaton Square Sw1Grade II*
- 142 m25-33, Eccleston Street Sw1Grade II
- 143 m1-8 Lygon PlaceGrade II
Checked on 6 October 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 £400,000 in May 1996. Terraced house, leasehold.
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 October 2025, 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
- Full Planning Permission Application
- Postcode
- SW1W 9HP
- Received
- 26 Jun 2026
- Validated
- 29 Jun 2026
- Ward
- Knightsbridge & Belgravia
- Case officer
- Show
- Target decision
- 24 Aug 2026
- Decision
- Application Permitted
- Decision date
- 25 Aug 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Jobey Keene
How this decision compares
Decided in 57 days from validation, about the council's usual 55 days. Approved, as 88% of extensions here are.
Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
65 neighbours consulted · Last counted 26 Aug 2026
Consultation & key dates
- Alt. reference
- PP-15036870
- Planning Portal ref
- PP-15036870
- Comments by
- 5 Aug 2026
- Site or press notice
- 15 Jul 2026
- Env. assessment
- No
Historical activity at this location
26 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.
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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18 Eaton Mews South London SW1W 9HP
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