PORTMAN HALL Old Redding, Stanmore, Harrow Data via plota.co.uk

PL/1498/26 - Works to Protected Trees Approved
Trees & landscaping

Proposal

T1) Cypress in central garden area: Remove to ground level. Wrong location, blocking light and sight lines mature trees. T2) Semi-mature Oak on raised bed in rear central garden area: Remove to ground level. Low amenity value, blocking light and space on raised plant bed. T3) Ash on raised bed in rear central garden area: Remove to ground level. Low amenity value, blocking light and space on raised plant bed. T4) Alder adjacent to property: Remove to ground level. Close proximity to property, blocking light to windows. Surrounded by trees of similar height and stature so no loss of foliage cover. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
3 Jun 2026
✓
Validated
6 Aug 2026
✓
Approved
11 Aug 2026

Approved on 11 Aug 2026 · Delegated decision · Last checked 30 Sept 2026

Documents 5

Statements & assessments 1

PDF Tree survey Report/Assessment · 4 Jun 2026 View ↗

Plans & drawings 1

PDF Tree Plan Plans · 4 Jun 2026 View ↗

Application forms 1

PDF Application Form Redacted Application Form (Redacted) · 4 Jun 2026 View ↗

Other documents 2

PDF DN - TPO Granted DN - TPO Granted · 6 Aug 2026 View ↗ PDF ACK - Work to TPO Tree Email · 4 Jun 2026 View ↗

All documents on the council site ↗

Site constraints 8

Green belt: London
Inappropriate development needs very special circumstances.
Green belt policy allows a short list of exceptions, such as limited extensions and replacement buildings. Anything else needs very special circumstances that clearly outweigh the harm. Some green belt land can count as grey belt, where it does not strongly serve the green belt's purposes. The council decides this in its green belt assessment or on each application, so we do not mark it here.
Read the government guidance ↗
Agricultural land, grade 3a
Best and most versatile land (grades 1, 2 and 3a). Source: the Predictive Agricultural Land Classification Map (Defra and Natural England, 2025; the Welsh Government's Predictive ALC Map 2 in Wales), a model rather than a site survey. A site survey can differ.
Where development of farmland is needed, policy prefers poorer land over the best and most versatile (grades 1, 2 and 3a). Three sources: Natural England's post-1988 field surveys, which are definitive where they exist; the Defra predictive map for England (2025) and the Welsh Government predictive map, modelled from the soil map with 3a and 3b split; and the 1970s provisional map, which planners and other services still show, coarser and with grade 3 undivided. Where the provisional and predicted grades disagree, treat the predicted grade as the current estimate and expect an application to carry its own survey.
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 1
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
SSSI 354 m away: Harrow Weald SSSI; Conservation area 60 m away: Brookshill Drive and Grimsdyke Estate; 1 listed building within 150 m; Public transport access: PTAL 1a (very poor), TfL 2023, for the 100 m square.
Not affected
Outside flood zones 2 and 3 · 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
Works to Protected Trees
Received
3 Jun 2026
Validated
6 Aug 2026
Ward
Harrow Weald
Case officer
Show
Target decision
1 Oct 2026
Decision
Grant Conditionally
Decision date
11 Aug 2026
Decision level
Delegated decision
Agent
Oakhouse Arboricultural Services Ltd

How this decision compares

Decided in 5 days from validation, about the council's usual 8 days. Approved, as 98% of tree and landscaping works here are.

79%decided within 8 weeks
98%approved
105decided in the last year

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

Consultation & key dates

Statutory expiry
1 Oct 2026
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