Harrow School, Speech Room, Grove Hill, Harrow, HA1 3HP Data via plota.co.uk

PL/0820/26 - Full Planning Application Approved
Schools, care & communityExtensions & alterationsUtility infrastructure

Proposal

Installation and replacement of existing boilers and associated works in Speech Room; installation of steel flue rain cap to roof; external alterations Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
24 Mar 2026
✓
Approved
19 May 2026

Approved on 19 May 2026 · Last checked 1 Oct 2026

Documents 22

Decision & officer reports 2

PDF Decision Notice DN - FULL and HSE Granted · 19 May 2026 View ↗ PDF Officer Report Delegated Report · 19 May 2026 View ↗

Statements & assessments 2

PDF Reasonable Exception Statement Report/Assessment · 18 May 2026 View ↗ PDF Design and Access Statement Report · 26 Mar 2026 View ↗

Plans & drawings 9

PDF Speech RoomMechanical Plantroom Layout Plans · 26 Mar 2026 View ↗ PDF Proposed Elevation Plans Plans · 26 Mar 2026 View ↗ PDF Existing Section Plans Plans · 26 Mar 2026 View ↗ PDF Existing Elevation Plans Plans · 26 Mar 2026 View ↗ PDF Existing Elevation Plans Plans · 26 Mar 2026 View ↗ PDF Existing Elevation Plans Plans · 26 Mar 2026 View ↗ PDF Existing Roof Plan Plans · 26 Mar 2026 View ↗ PDF Site Location Plan Plans · 26 Mar 2026 View ↗ PDF Existing Ground Floor Plans Plans · 26 Mar 2026 View ↗

Application forms 1

PDF Application Form Redacted Application Form (Redacted) · 26 Mar 2026 View ↗

Consultation & comments 5

PDF Conservation Comments Consultation (Redacted) · 19 May 2026 View ↗ PDF MOD Comments Consultation (Redacted) · 19 May 2026 View ↗ PDF CAAC Comments Consultation (Redacted) · 19 May 2026 View ↗ PDF CAAC Comments received Consultation (Redacted) · 19 May 2026 View ↗ PDF Historic England Comments Consultation (Redacted) · 19 May 2026 View ↗

Other documents 3

PDF Site Notice Photo SN - Site Notice · 19 May 2026 View ↗ PDF May-2026-photos-Speech-Room Photos/Imagery · 13 May 2026 View ↗ PDF Planning-Constraints Report · 26 Mar 2026 View ↗

All documents on the council site ↗

Licence at this address

  • Licence Harrow School Premises licence · in force Licensed hours: alcohol until 01:00

Licensed hours are what the licence permits, not opening times.

Site constraints 11

Grade II* listed: Speech Room (Harrow School)
List entry 1193321 · 1 m away · 21 more listed buildings within 150 m (2 Grade I, 3 Grade II*, 15 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 21 with distances
Historic England ↗
Harrow on-the-Hill / Harrow School 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 ↗
Archaeological priority area: (core area of Harrow on the Hill)
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: Harrow 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 ↗
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
Registered park or garden 220 m away: Harrow Park (Formerly Flambards); Inside the Harrow built-up area; Public transport access: PTAL 5 (very good), TfL 2023, for the 100 m square; Designated open space 23 m away; Priority habitat 37 m away: Deciduous woodland; Metropolitan Open Land 52 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 17 October 2026. Historic England, the Environment Agency, Natural England, 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
Harrow
Application type
Full Planning Application
Postcode
HA1 3HP
Received
24 Mar 2026
Validated
24 Mar 2026
Ward
Harrow on the Hill
Case officer
Show
Target decision
19 May 2026
Decision
Grant Conditionally
Decision date
19 May 2026
Applicant
Show
Agent
Barker Associates (Essex) Limited

How this decision compares

Decided in 56 days from validation, about the council's usual 56 days. Approved, as 79% of extensions here are.

84%decided within 8 weeks
79%approved
1,937decided in the last year

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

Consultation & key dates

Statutory expiry
19 May 2026

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025
Ducker Field, Watford Road, Harrow On The Hill, HA1 3HP
Regrading of the existing natural turf sports pitch and reprovision of goalposts, install…
PL/1399/25
2023 Approved
Harrow School Speech Room, Harrow School Speech Room High Street, Harrow Hill, Harrow,
Submission of details pursuant to application reference P/0764/21 for Listed building con…
P/2073/23
2023 Refused
The Headmasters House High Street, Harrow Hill, Harrow,
Details pursuant to condition 9 (community infrastructure levy) attached to planning perm…
P/0747/23
2023 Refused
The Headmasters House High Street, Harrow Hill, Harrow,
Details pursuant to conditions 3 (materials), 4 (windows and doors), 5 (cycle and refuse…
P/0347/23
2022 Approved
The Headmasters House High Street, Harrow Hill, Harrow,
Conversion of part rear at ground floor and basement levels from school storage area (use…
P/1623/22
2022 Approved
Harrow School Cricket Ground North Side West Street, Harrow On The Hill, Harrow,
Details pursuant to Condition 4 (boundary treatment) attached to planning permission P/30…
P/1751/22
2022 Approved
The Headmasters House High Street, Harrow Hill, Harrow,
Listed Building Consent: Internal and external alterations to accommodate the conversion…
P/2028/22
2021 Approved
The Bursar, 5 High Street, Harrow Hill, Harrow, HA1 3HP
Construction of pedestrian footpath with associated landscaping to the northern edge of u…
P/2483/21
2021 Approved
The Headmasters House High Street, Harrow Hill, Harrow,
Submission of details pursuant to condition 2 (unknown evidence) attached to Listed Build…
P/3343/21
2020 Approved
Harrow School Gym Yew Walk, Harrow On The Hill, Harrow, HA1 3HR
Submission of details pursuant to conditions 2 a (glass light), b (lion motiff), c (lette…
P/3658/20
2021 Approved
The Headmasters House High Street, Harrow Hill, Harrow,
Listed Building Consent: Internal works including redecoration, cleaning, new lighting, e…
P/1321/21
2021 Approved
The Bursar, 5 High Street, Harrow Hill, Harrow, HA1 3HP
Listed Building Consent: refurbishment works including redecoration, replacement lighting…
P/0764/21
2020 Approved
Druries High Street, Harrow Hill, Harrow,
Details pursuant to condition 3 (materials) attached to planning permission P/2490/19 dat…
P/2527/20
2019 Approved
The Bursar, 5 High Street, Harrow Hill, Harrow, HA1 3HP
Installation Of Floodlights Attached To Eight 10M High Columns To Three Tennis Courts
P/4864/19
2019 Approved
The Headmasters House High Street, Harrow Hill, Harrow,
Replacement of lantern and repairs to plinth
P/4672/19
2019 Withdrawn
Moretons, 9 High Street, Harrow Hill, Harrow, HA1 3HS
Submission of details pursuant to condition 3 (paint removal) attached to Listed Building…
P/4054/19
2019 Approved
The Hill Harrow Stores, 34 High Street, Harrow Hill, Harrow, HA1 3LH
Replacement of external staircase at rear
P/2792/19
2019 Approved
Moretons, 9 High Street, Harrow Hill, Harrow, HA1 3HS
Listed Building Consent: Internal alterations including new openings in existing internal…
P/2616/19
2018 Approved
The Bursar, 5 High Street, Harrow Hill, Harrow, HA1 3HP
Proposed hard and soft landscaping; fence enclosed at rear of building; new terrace; new…
P/5197/18
2018 Approved
Housemasters House, The Headmasters High Street, Harrow, HA1 3HW
Re-location of boilers to existing storage building new flue and new trunking along wall…
P/3807/18
2017 Approved
The Headmasters, High Street, Harrow, HA1 3HW
Listed building consent: cover asphalt on north section of flat roof with traditional lai…
P/2633/17
2017 Approved
Harrow School Outfitters, 32 High Street, Harrow, HA1 3LH
Installation of an external condenser unit with screening over existing single storey fla…
P/1450/17
2017 Approved
Harrow School Outfitters, 32 High Street, Harrow, HA1 3LH
Display of one non-illuminated hanging sign
P/1347/17
2017 Approved
The Headmasters, High Street, Harrow, HA1 3HW
Listed building consent: replacement metal deck
P/0269/17
2016 Approved
The Stone Rose Public House, 32 High Street, Harrow, HA1 3LH
Change of use of 32 high street from c2 use to a1 use; change of use of 34 high street fr…
P/1404/16
Harrow
Planning Authority Score
4.9/10
Below average
#153 of 296 councils
Relevant to this application:
Householder decisions

Harrow ranks #115 out of 296 councils for householder decision speed. Harrow is also one of the strictest councils - it refuses more householder applications than almost any other, with only 83% approved vs 90% nationally.

One of the strictest councils
only 83% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Harrow decision statistics
Based on MHCLG data, the year to March 2026
78%
Overall approval rate
Below avg (87%) #273 of 296
83%
Householder approved
Below avg (90%) #261 of 296
71%
Decided in 8 weeks
Above avg (63%) #115 of 296
33%
Extended time limit
Below avg (41%) #77 of 296
44%
Minor dwellings approved
133 decided (1-9 homes)
80%
Major dwellings approved
5 decided (10+ homes)
38%
Change of use approved
26 decided
1,330
Total decisions
298 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings