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

PL/2729/26 - Listed Building Consent Pending Consideration

Proposal

Listed Building Consent: installation of 2 black cast iron ventilation louvres Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
week of 12 Oct 2026
✓
Validated
15 Oct 2026
Decision
Expected by 10 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 10 Dec 2026, from Harrow's recent utility and infrastructure works.

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
Listed Building Consent
Postcode
HA1 3HP
Received
week of 12 Oct 2026
Validated
15 Oct 2026
Ward
Harrow on the Hill
Case officer
Show
Target decision
10 Dec 2026
Decision level
Delegated decision
Applicant
Show
Agent
Barker Associates (Essex) Limited

Decision outlook

Day 4 of the 56-day target. Harrow usually decides utility and infrastructure works by day 56.

Day 452 days to the 56-day target
81%decided within 8 weeks
80%approved
53decided in the last year

Plota live figures for utility and infrastructure works decided by Harrow in the last twelve months, from validation. Harrow decision record →

Consultation & key dates

Statutory expiry
10 Dec 2026
Harrow
Planning Authority Score
4.9/10
Below average
#153 of 296 councils
Relevant to this application:
Other 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