Chatham House 10 St James's Square London SW1Y 4LE Data via plota.co.uk
25/05354/LBC - Listed Building Consent Application
Approved
Proposal
Remedial structural works to the lightwell and basement vault. Data via plota.co.uk
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View original council record ↗Last checked
Application progress
✓
Received
31 Jul 2025
✓
Validated
12 Aug 2025
✓
Approved
26 Sept 2025
Approved on 26 Sept 2025 · Delegated Decision · Last checked 31 Oct 2026
Documents 21
Decision & officer reports 2
Statements & assessments 3
Plans & drawings 5
Application forms 1
Consultation & comments 1
Other documents 9
PDF
ACK-GENERAL LETTER (G/P/C)
Background Papers · 28 Aug 2025
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PDF
SITE NOTICE 21 OR 28 DAYS IF T&C APPL.
Background Papers · 28 Aug 2025
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PDF
RECEIPT OF APPLICATION
Other · 7 Aug 2025
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PDF
1ST INVALID LETTER
Background Papers · 7 Aug 2025
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PDF
COVER LETTER_FINAL
Background Papers · 7 Aug 2025
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PDF
HELI BARS DATA SHEET
Background Papers · 7 Aug 2025
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PDF
HELI BARS DATA SHEET
Superseded document · 31 Jul 2025
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PDF
APPLICATIONFORMREDACTED
Superseded document · 31 Jul 2025
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PDF
ATTACHMENTSUMMARY
Background Papers · 31 Jul 2025
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Site constraints 12
Grade I listed: Chatham House
List entry 1264939 · The pin is inside its outline · 42 more listed buildings within 150 m (4 Grade I, 10 Grade II*, 28 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 42 with distances
- 6 m9, St James's Square Sw1Grade II*
- 6 m11, St James's Square Sw1Grade II*
- 17 m12, St James's Square Sw1Grade II
- 31 m13, St James's Square Sw1Grade II*
- 45 mLondon LibraryGrade II
- 45 m7, St James's Square Sw1Grade II
- 52 m4 Lampstandards Numbered 1 to 4 (Consecutive)Grade II
- 52 m15, St James's Square Sw1Grade I
- 52 mMounting Block on Kerb in Front of Number 7Grade II
- 54 m41 LampstandardsGrade II
- 55 mThe Red Lion Public HouseGrade II
- 58 m96, Jermyn Street Sw1Grade II
- 60 mEast India Sports ClubGrade II
- 61 m94, Jermyn Street Sw1Grade II
- 62 m93, Jermyn Street Sw1Grade II
- 63 m95, Jermyn Street Sw1Grade II
- 70 m89, Jermyn Street Sw1Grade II
- 70 m90, Jermyn Street Sw1Grade II*
- 73 m88, Jermyn Street Sw1Grade II
- 76 mWentworth HouseGrade II*
- 80 m18, St James's Square Sw1Grade II
- 85 mChurch of St James's PiccadillyGrade I
- 86 m106, Jermyn Street Sw1Grade II
- 89 m1a, 1b, 1c, King Street, St James's Sw1Grade II
- 90 mStatue of William Iii (in Centre of Square)Grade I
- 91 m4, St James's Square Sw1Grade II*
- 100 m11, Duke StreetGrade II
- 103 mSimpsonsGrade II*
- 108 m2 and 3, Duke Street St James's Sw1Grade II
- 112 mFormer Royal Institute of Painters in Water Colours Premises, Now Forming Part of Prince's HouseGrade II
- 112 mSouthwood Memorial in St James's ChurchyardGrade II
- 120 m20 and 21, St James's Square Sw1Grade I
- 121 mFormer Midland BankGrade II*
- 125 m25, Jermyn Street Sw1Grade II
- 131 m111 and 112, Jermyn Street Sw1Grade II
- 131 m33, ST JAMES'S SQUARE SW1 (See details for further address information)Grade II*
- 135 m7-9, Babmaes Street Sw1Grade II
- 138 mSummerhouse to Centre of South Side of Square GardenGrade II
- 140 m207-209, Piccadilly W1Grade II
- 141 mLondon HouseGrade II*
- 142 m15, Lower Regent Street Sw1Grade II
- 144 mParamount and Universal CinemasGrade II
St James's 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.
2 Article 4 directions
Article 4 Basement Development Permitted Rights Removed · Article 4 Direction Class E To C3 In Central Activities Zone. 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.
Archaeological priority area: City of Westminster APA 2.5
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.
Town centre: West End
A designated centre in the London Plan.
Shops, services and active frontages are protected in centres, and main town centre uses are steered here first.
National infrastructure project 428 m away: Thames Tideway Tunnel
The site is 428 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, 228 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.
Registered park or garden 39 m away: St James's 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.
Central activities zone
The core of central London in the London Plan.
Offices, culture and the other strategic functions of the centre take priority over new housing here.
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; Priority habitat 41 m away: Deciduous woodland.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site
Checked on 1 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.
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Important details
- Council
- Westminster
- Application type
- Listed Building Consent Application
- Postcode
- SW1Y 4LE
- Received
- 31 Jul 2025
- Validated
- 12 Aug 2025
- Ward
- St James's
- Case officer
- Show
- Target decision
- 7 Oct 2025
- Decision
- Application Permitted
- Decision date
- 26 Sept 2025
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Pegasus Group
How this decision compares
Decided in 45 days from validation, 12 days faster than Westminster's median of 57 for listed building works. Approved, as 90% of listed building works here are.
This one45d
Council57d
UK57d
49%decided within 8 weeks
90%approved
2,227decided in the last year
Plota live figures for listed building works decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
Last counted 31 Oct 2026
Consultation & key dates
- Alt. reference
- PP-14184498
- Planning Portal ref
- PP-14184498
- Comments by
- 24 Sept 2025
- Site or press notice
- 3 Sept 2025
- Env. assessment
- No
Historical activity at this location
35 previous applications on record - archival context, not part of the live application.
This property
Previous applications at this address
2021
Approved
Removal and replacement of rainwater pipes and gutters. Removal and like for like replace…
2021
Approved
Removal and replacement of rainwater pipes and gutters. Removal and like for like replace…
2019
Approved
Internal refurbishment works including lighting installation throughout both buildings ba…
2019
Approved
Replacement of two existing condenser units and installation of a new condenser unit at f…
2019
Approved
Replacement of two existing condenser units and installation of a new condenser unit at f…
2019
Withdrawn
Plasterwork repairs within the main staircase
2019
Withdrawn
Internal refurbishment works at basement, ground and first floor levels.
2016
Approved
Variation of Condition 1 of planning permission dated 25 July 2016 (RN: 16/04844/FULL) fo…
2016
Approved
Variation of Condition 1 of planning permission dated 1 October 2016 (RN: 15/05933/FULL)…
2016
Withdrawn
Details pursuant to Conditions 1, 2, 3, 4, 5, 6 and 7 (not inc. Part a) of planning permi…
Within ~100m
Nearby activity
2025
Approved
12 St James's Square London SW1Y 4LB
Regulation 5 Notice of Intention to Install Fixed Line Broadband Apparatus to a Listed Bu…
2025
14 St James's Square London SW1Y 4LG
Installation of a new lift shaft within the existing lightwell providing access to all le…
2025
14 St James's Square London SW1Y 4LG
Installation of a new lift shaft within existing lightwell providing access to all levels…
2024
14 St James's Square London SW1Y 4LG
External alterations including replacement of existing plant equipment and rooflights; in…
2024
14 St James's Square London SW1Y 4LG
Internal refurbishment and alterations at ground and basement level; external alterations…
2024
Approved
95 Jermyn Street London SW1Y 6JE
Display of non-illuminated mesh and vinyl advertisements on hoardings measuring 2.44m x 0…
2024
103-105 Jermyn Street London SW1Y 6EE
RECONSULTATION: Amendments to proposed roof terrace and balconies, facades and Daylight &…
2023
Approved
11 - 12 St James's Square London SW1Y 4LB
Replacement and installation of new plant at roof and basement level and three plant scre…
2024
Approved
95 Jermyn Street London SW1Y 6JE
Replacement of one window to front elevation at third floor level.
2023
Approved
95 Jermyn Street London SW1Y 6JE
Works of repair and restoration to the external elevations and roof including brickwork c…
2022
Approved
7 St James's Square London SW1Y 4JU
Internal at all levels to reconfigure layouts and external alterations to the eastern lig…
2023
Approved
Bray House Duke Of York Street London SW1Y 6JX
Retention of replacement staircase and security sensor lighting to rear escape stairwell.
2023
11 - 12 St James's Square London SW1Y 4LB
Office enhancements, including internal alterations to main entrance, reception and atriu…
2023
11 - 12 St James's Square London SW1Y 4LB
Refurbishment and alterations to main entrance, reception and atrium areas, improvements…
2023
Approved
11 - 12 St James's Square London SW1Y 4LB
Various internal refurbishment works to existing rear office extension area from ground f…
2023
Withdrawn
Ames House 6 Duke Of York Street London SW1Y 6LA
The construction of a fully glazed winter garden over the existing outdoor terrace area.
2023
11 - 12 St James's Square London SW1Y 4LB
Replacement of roof and basement level plant equipment and enclosure at roof level; lands…
2023
Approved
12 St James's Square London SW1Y 4LB
Installation of brass plaque located on pilaster adjacent to main entrance.
2022
Approved
12 St James's Square London SW1Y 4LB
Display of a non-illuminated bronze plaque measuring 25cm x 35cm
2022
5 St James's Square London SW1Y 4JU
Alterations to the existing secondary staircase to allow for strengthening works to the b…
2018
Approved
Open Space Centre Of St James's Square London SW1Y 4LD
T1 1 x cherry: fellT2 1 x Sorbus: crown clean and lift over road up to 3mT3 and T4 2 x ch…
2018
Approved
Open Space Centre Of St James's Square London SW1Y 4LD
T5 1 x hawthorn: fellT6 1 x Malus: reduce canopy by 20-30% pruning back to suitable growt…
2018
Approved
89 Jermyn Street London SW1Y 6JH
Display for a temporary period of six months of a non-illuminated estate agent board loca…
2018
Approved
12 St James's Square London SW1Y 4LB
Internal alterations to existing rear extension, in connection with a new internal fit ou…
2018
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7 St James's Square London SW1Y 4JU
Variation of condition 1 of listed building consent dated 08 September 2014 (RN: 14/01446…
Westminster
Planning Authority Score
3.5/10
Below average
#221 of 296 councils
Relevant to this application:
Other 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
Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
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Chatham House 10 St James's Square London SW1Y 4LE
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