Harmont House 20 Harley Street London W1G 9PH Data via plota.co.uk

26/04602/FULL - Full Planning Permission Application Approved
Extensions & alterations

Proposal

Roof maintenance works to include the removal and replacement of the existing roof coverings to Harmont House and Milford House (SITE INCLUDES MILFORD HOUSE) Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
10 Jul 2026
✓
Approved
24 Aug 2026

Approved on 24 Aug 2026 · Delegated Decision · Last checked 26 Aug 2026

Documents 16

Decision & officer reports 2

PDF GRANT OF FULL PP [PE] Decision Notice · 24 Aug 2026 View ↗ PDF DELEGATED REPORT Report · 24 Aug 2026 View ↗

Statements & assessments 2

PDF ROOF MAINTENENCE WORKS PLANNING AND HERITAGE STATEMENT Heritage Statement · 10 Jul 2026 View ↗ PDF FIRE SAFETY REASONABLE EXEMPTIONS STATEMENT Background Papers · 10 Jul 2026 View ↗

Plans & drawings 3

PDF HARMOUNT AND MILFORD HOUSE - TAPPERED SCHEME Drawing · 10 Jul 2026 View ↗ PDF ROOF WORKS PLAN S2 P02 Drawing · 10 Jul 2026 View ↗ PDF SITE LOCATION PLAN S2 P01 Drawing · 10 Jul 2026 View ↗

Application forms 2

PDF APPLICATIONFORMREDACTED Application Form · 10 Jul 2026 View ↗ PDF FEECALCULATION Background Papers · 10 Jul 2026 View ↗

Consultation & comments 1

PDF NEIGHBOUR NOTIFICATION LETTER (21D) Background Papers · 23 Jul 2026 View ↗

Other documents 6

PDF SITE NOTICE 21 OR 28 DAYS IF T&C APPL. Background Papers · 23 Jul 2026 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 23 Jul 2026 View ↗ PDF ACK-GENERAL LETTER (G/P/C) Background Papers · 23 Jul 2026 View ↗ PDF RECEIPT OF APPLICATION Other · 13 Jul 2026 View ↗ PDF ATTACHMENTSUMMARY Background Papers · 10 Jul 2026 View ↗ PDF PROPOSED SPECIFICATION Background Papers · 10 Jul 2026 View ↗

All documents on the council site ↗

Site constraints 7

Harley Street 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 ↗
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 Named permitted development rights are withdrawn here.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.
Council record ↗
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.
58 listed buildings within 150 m
Nearest: 9-13, Queen Anne Street W1, Grade II, 33 m away · 1 Grade I, 5 Grade II*, 52 Grade II
The site itself is not listed. 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 all 58 with distances
Historic England ↗
Also on the record
Inside the City of Westminster built-up area.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England 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
Full Planning Permission Application
Postcode
W1G 9PH
Received
10 Jul 2026
Validated
10 Jul 2026
Ward
Marylebone
Case officer
Show
Target decision
4 Sept 2026
Decision
Application Permitted
Decision date
24 Aug 2026
Decision level
Delegated Decision
Applicant
Show
Agent
Ingleton Wood

How this decision compares

Decided in 45 days from validation, 8 days faster than Westminster's median of 53 for extensions. Approved, as 87% of extensions here are.

62%decided within 8 weeks
87%approved
930decided in the last year

Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →

Public comments

No public comments yet.

123 neighbours consulted · Last counted 26 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15012337
Site or press notice
29 Jul 2026
Env. assessment
No

Historical activity at this location

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

This property

Previous applications at this address

2024
Change of use from Class D1/ Class E to (Class C3) (Flat 6)
24/06514/FULL
Within ~100m

Nearby activity

2025
4 Queen Anne Street London W1G 9LQ
Repositioning of the plant units and new anti-vibration mounts. (Linked with 25/07282/FUL…
25/07252/LBC
2025
4 Queen Anne Street London W1G 9LQ
Variation of condition 1 of planning permission dated 22nd November 2024 (RN: 24/05074/FU…
25/07255/FULL
2025
4 Queen Anne Street London W1G 9LQ
Installation of additional anti-vibration mounts and reposition the currently approved pl…
25/07251/LBC
2025 Withdrawn
4 Mansfield Mews London W1G 9NL
Partial removal of existing roof to create new roof terrace, accessible via a new stair w…
25/05099/FULL
2025 Withdrawn
4 Mansfield Mews London W1G 9NL
Partial removal of existing roof to create new roof terrace, accessible via a new stair w…
25/05100/LBC
2025
2 Mansfield Mews London W1G 9NL
Replacement of existing glass roof finish with a zinc covering.
25/06964/FULL
2025 Approved
13 Harley Street London W1G 9QG
Internal alterations throughout the building to include the construction of four demounta…
25/04782/LBC
2025 Approved
13 Harley Street London W1G 9QG
Creation of new terrace areas at ground floor level within a lightwell and at the rear of…
25/04781/FULL
2025 Refused
30 Queen Anne Street London W1G 8HX
Erection of an infill extension at basement and ground floor level, Installation of a new…
25/05505/FULL
2025 Approved
12 Harley Street London W1G 9PB
Installation of new handrails at no.8, 10 and 12; and repairs to existing front entrance…
25/04974/LBC
2025 Approved
12 Harley Street London W1G 9PB
Installation of new handrails at no.8, 10 and 12; and repairs to existing front entrance…
25/04973/FULL
2025
43 - 49 Harley Street London W1G 8BT
Installation of support beam to facilitate failing beam at ground floor level (45 Harley…
25/06693/LBC
2025
14 Wigmore Place London W1U 2LX
Replacement of front entrance door; installation of insulation to external walls; removal…
25/06648/LBC
2025
14 Wigmore Place London W1U 2LX
Replacement of front entrance door; installation of slim line glazing to existing windows…
25/06647/FULL
2025
First Floor 15 Harley Street London W1G 9QQ
Re-orientation of an existing air handling unit (AHU) located on the rooftop of the moder…
25/06470/LBC
2025
First Floor 15 Harley Street London W1G 9QQ
Re-orientation of an existing air handling unit (AHU) located on the rooftop of the moder…
25/06469/FULL
2025 Approved
Flat 53 2 Mansfield Street London W1G 9NF
Alterations to the internal layout including the removal of partitions, construction of n…
25/04293/LBC
2025
29 Queen Anne Street London W1G 9HU
Replacement of a window on the rear elevation with a new access door; reinforcements and…
25/04706/LBC
2025
29 Queen Anne Street London W1G 9HU
Replacement of a window on the rear elevation with a new access door; reinforcements and…
25/04705/FULL
2025 Approved
10A Chandos Street London W1G 9DQ
Display for a temporary period of six months of a non-illuminated estate agent board atta…
25/03455/AD7
2021 Approved
43-49 Harley Street London W1G 8BT
Display of non-illuminated Pride flag measuring 2.0m x 1.0m for a temporary period from 1…
21/03958/ADV
2021 Approved
21 Harley Street London W1G 9QL
Strengthening works to first floor.
21/01379/LBC
2021 Refused
Flat 26 Harmont House 20 Harley Street London W1G 9PJ
Use as composite use comprising a dental practice and residential unit (sui generis).
21/02118/FULL
2021 Approved
2 Mansfield Street London W1G 9NZ
Installation of fibre optic broadband cable (site includes 4 Queen Anne Street).
21/01579/LBC
2021 Approved
2 Mansfield Street London W1G 9NZ
Installation of fibre optic broadband cable (site includes 4 Queen Anne Street).
21/01578/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