78 Chester Square London SW1W 9DU Data via plota.co.uk

26/03262/ADFULL - Approval of Details (Full PP) Approved
Admin / procedural

Proposal

Detailed drawings of the new windows and doors and detailed drawings of a section drawing through the mansard pursuant to Conditions 6 and 9 of planning permission dated 17 May 2024 (). Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
18 May 2026
✓
Approved
9 Jun 2026

Approved on 9 Jun 2026 · Delegated Decision · Last checked 7 Jul 2026

Documents 15

Decision & officer reports 2

PDF APPR. OF DETAILS-FULL RESMAT [PE] Decision Notice · 9 Jun 2026 View ↗ PDF DELEGATED REPORT Report · 9 Jun 2026 View ↗

Plans & drawings 7

PDF EXT. WINDOWS - 78CS W.LG.02 Drawing · 5 Jun 2026 View ↗ PDF WINDOW DETAILS Drawing · 5 Jun 2026 View ↗ PDF WINDOW DETAILS Drawing · 5 Jun 2026 View ↗ PDF DOOR DETAILS Drawing · 18 May 2026 View ↗ PDF WINDOW DETAIL DRAWINGS Drawing · 18 May 2026 View ↗ PDF DOOR DETAILS Drawing · 18 May 2026 View ↗ PDF DRAWINGS Drawing · 18 May 2026 View ↗

Application forms 2

PDF APPLICATIONFORMREDACTED Application Form · 18 May 2026 View ↗ PDF FEECALCULATION Background Papers · 18 May 2026 View ↗

Other documents 4

PDF ACK-APPROVAL OF DETAILS APPL. Background Papers · 8 Jun 2026 View ↗ PDF RECEIPT OF APPLICATION Other · 21 May 2026 View ↗ PDF ATTACHMENTSUMMARY Background Papers · 18 May 2026 View ↗ PDF COVER LETTER Other · 18 May 2026 View ↗

All documents on the council site ↗

Associated applications 2

  • Part of

    FullApprovedcouncil archive

    Conditions 6, 9 discharged

    • ConditionsDetailed drawings of the new windows and doors and detailed drawings of a section drawing…This application26/03262/ADFULL

Site constraints 11

Grade II listed: Nos 77 to 80 (consec), 80a and Mews Arch, Chester Square
List entry 1066276 · The pin is inside its outline · 20 more listed buildings within 150 m (2 Grade II*, 18 Grade II)
Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show the other 20 with distances
Historic England ↗
Belgravia conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
Article 4 direction
Article 4 Basement Development Permitted Rights Removed. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Protected view corridor: 9A.1 King Henry's Mound to St Paul's Cathedral
Inside the landmark viewing corridor of a protected vista. A building that rises above the corridor's threshold height should be refused. How high that is depends on where along the view the site is.
The London Plan (policy HC4) designates strategic views, and the Mayor's London View Management Framework (March 2012) gives 13 of them a protected vista toward St Paul's Cathedral, the Palace of Westminster or the Tower of London. A vista has a threshold height that rises or falls with the line of sight. In the landmark viewing corridor, a building above it would harm the view and should be refused. In the wider setting consultation area around the corridor, a building above it is referred for consultation and its effect on the view is judged. The threshold changes along each view and is set out in the framework. A revised framework is out for consultation until 4 December 2026 and is not yet in force.
London View Management Framework ↗
Archaeological priority area: City of Westminster APA 3.2
An assessment or field evaluation may be asked for before ground works.
The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.
Air quality management area: Westminster AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
Registered park or garden 30 m away: The Grosvenor Estate: Chester Square
Its setting is a consideration for work nearby.
Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.
Historic England ↗
National infrastructure project 595 m away: Thames Tideway Tunnel
The site is 595 m from the project boundary. Waste water treatment, decided. The project page says whether consent was granted. Also within 2 km: London Strategic Heat Main Project (at pre-application, 65 m).
Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.
Planning Inspectorate project page ↗
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Inside the City of Westminster built-up area; Public transport access: PTAL 6b (excellent), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 3 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 3

Last sold for £10,300,000 in March 2023. Terraced house, leasehold.

31 March 2023£10,300,000One of 2 sales recorded that day
31 March 2023£4,200,000Freehold. One of 2 sales recorded that day
7 March 2000£3,906,443

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area449 m² (4,833 sq ft)
Energy ratingD (61 out of 100), could reach C
PropertyMid-terrace house, 10 habitable rooms
BuiltBefore 1900
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in December 2021, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Important details

Council
Westminster
Application type
Approval of Details (Full PP)
Postcode
SW1W 9DU
Received
18 May 2026
Validated
18 May 2026
Ward
Knightsbridge & Belgravia
Case officer
Show
Target decision
13 Jul 2026
Decision
Application Permitted
Decision date
9 Jun 2026
Decision level
Delegated Decision
Applicant
Show
Agent
ADL Planning Pty Ltd

Consultation & key dates

Alt. reference
PP-14940691
Planning Portal ref
PP-14940691
Env. assessment
No

Historical activity at this location

27 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2024 Approved
Replacement of the existing lower ground floor rear extension with a new extension at rea…
24/00172/FULL
2024 Approved
Replacement of the existing lower ground floor rear extension with a new extension at rea…
24/00173/LBC
Within ~100m

Nearby activity

2025
33 Lower Belgrave Street London SW1W 0LS
Removal of one small, floor level window to rear elevation.
25/07453/FULL
2025 Approved
77 Chester Square London SW1W 9DY
1 x London plane T1: Cut back selected branches to suitable branch junctions to provide u…
25/05160/TCA
2025 Approved
77 - 79 Ebury Street London SW1W 0NZ
Display of externally illuminated projecting sign measuring 0.7m x 0.5m, externally illum…
25/04538/ADV
2025 Approved
16 Eaton Mews South London SW1W 9HP
Creation of a roof terrace with glazed access hatch, rooflights and railings and installa…
25/03034/FULL
2025
79 Chester Square London SW1W 9DU
Addition of a glazed roof above the new rear light well, relocation of the living wall an…
25/01359/FULL
2025
79 Chester Square London SW1W 9DU
AdditionAddition of a glazed roof above the new rear light well, relocation of the living…
25/01311/LBC
2025
77 Chester Square London SW1W 9DY
Selective pruning of over hanging limbs on boundary with 76 Chester Square to provide max…
25/01225/TCA
2024
3 Chester Square Mews London SW1W 9DS
Remodelling of 3 Chester Square Mews comprising the provision of a basement beneath the b…
24/08101/LBC
2024
3 Chester Square Mews London SW1W 9DS
Remodelling of 3 Chester Square Mews comprising the provision of a basement beneath the b…
24/08100/FULL
2024
65 - 69 Ebury Street London SW1W 0NZ
Installation of replacement extract duct to rear of building and associated works.
24/07275/FULL
2024
76 Chester Square London SW1W 9DU
External repair and maintenance, including replacement of tank house and dormers, introdu…
24/07271/LBC
2024
76 Chester Square London SW1W 9DU
External repair and maintenance, including replacement of tank house and introduction of…
24/07270/FULL
2024
3 Chester Square Mews London SW1W 9DS
Remodelling of building including excavation to create new beasement level; erection of m…
24/05904/LBC
2024
3 Chester Square Mews London SW1W 9DS
Remodelling of building including excavation to create new beasement level; erection of m…
24/05903/FULL
2024
29 Lower Belgrave Street London SW1W 0LS
Rear LH boundary(T1)- Bay(Laurus nobilis)-reduce crown by 1m to suitable growth points -r…
24/04674/TCA
2024 Approved
63 Ebury Street London SW1W 0NZ
Installation of a new shopfront.
24/00841/FULL
2024 Approved
55 Ebury Street London SW1W 0PA
Alterations to the ground floor entrance and fenestration, including infilling the underc…
24/00776/FULL
2024
63 Ebury Street London SW1W 0NZ
Display of an externally illuminated fascia sign measuring 40cm x 105cm; an externally il…
24/02340/ADV
2023 Approved
85 Chester Square London SW1W 9HJ
Replacement of existing stone paving at front entrance with Portland Stone.
23/08537/LBC
2023 Approved
4 Chester Square London SW1W 9HH
Internal alterations at lower ground floor level involving the removal of modern partitio…
23/08486/LBC
2020 Approved
1 Chester Square London SW1W 9HH
Replacement of central section of front entrance step with Portland stone and honed Nero…
20/07273/FULL
2020 Approved
29 Lower Belgrave Street London SW1W 0LS
1 x bay (rear): reduce by 1.5 metres circa and reshape.
20/06593/TCA
2020 Approved
Belgravia Court 33 Ebury Street London SW1W 0NY
Erection of single storey porters lodge; installation of new boundary railings and gates…
20/02713/FULL
2020 Approved
2 Chester Square London SW1W 9HH
Refurbishment works to single-family dwelling, including infilling of rear lightwell at l…
20/02305/LBC
2020 Approved
2 Chester Square London SW1W 9HH
Refurbishment works to single-family dwelling, including infilling of rear lightwell at l…
20/02304/FULL
Westminster
Planning Authority Score
3.5/10
Below average
#221 of 296 councils
Relevant to this application:
Householder decisions

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.

One of the strictest councils
only 81% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Westminster decision statistics
Based on MHCLG data, the year to March 2026
86%
Overall approval rate
Below avg (87%) #201 of 296
81%
Householder approved
Below avg (90%) #277 of 296
44%
Decided in 8 weeks
Below avg (63%) #258 of 296
28%
Extended time limit
Below avg (41%) #46 of 296
83%
Minor dwellings approved
12 decided (1-9 homes)
67%
Major dwellings approved
3 decided (10+ homes)
81%
Change of use approved
133 decided
4,602
Total decisions
648 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

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.