TALL TREES Mount Park Road, Harrow On The Hill, Harrow, HA1 3JU Data via plota.co.uk

PL/1502/26 - Householder Refused

Proposal

Two storey side to rear extension; rear dormer; external alteration (Demolition of detached garage) Data via plota.co.uk

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View original council record ↗Last checked 1 Oct 2026, 00:53

Street View

Application progress

✓

Received

3 Jun 2026

✗

Refused

29 Jul 2026

Appeal

Appeal In Progress

Refused on 29 Jul 2026 · Delegated decision · Last checked 30 Sept 2026

Documents 17

Site constraints 7

Harrow on-the-Hill / Mount Park Estate 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 ↗

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

Inside the Harrow built-up area; Public transport access: PTAL 4 (good), TfL 2023, for the 100 m square; Priority habitat 29 m away: Deciduous woodland; Metropolitan Open Land 58 m away.

Not affected

Outside flood zones 2 and 3 · Not green belt · No listed building 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.

Sales history 3

Last sold for £1,262,500 in September 2015. Detached house, freehold.

18 September 2015£1,262,500

18 May 2001£655,000

22 August 1996£340,000

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

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Other new applications on this street

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CHARNWOOD Mount Park Road, Harrow On The Hill, Harrow, HA1 3JU

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6 Jul 2026Withdrawn

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Important details

Council: Harrow
Application type: Householder
Postcode: HA1 3JU
Received: 3 Jun 2026
Validated: 3 Jun 2026
Ward: Harrow on the Hill
Case officer: Show
Target decision: 29 Jul 2026
Decision: Refused
Decision date: 29 Jul 2026
Decision level: Delegated decision
Applicant: Show
Agent: Construct 360 T/AS DontMoveExtend.com

How this decision compares

Decided in 56 days from validation, about the council's usual 56 days. Refused, as 23% of demolitions here are.

This one56d

Council56d

UK56d

66%decided within 8 weeks

77%approved

276decided in the last year

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

Consultation & key dates

Statutory expiry: 29 Jul 2026

Historical activity at this location

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

This property

Previous applications at this address

2019 Approved

Robinia (woodland area, Penketh Drive boundary): Reduce height by up to 1/3rd

P/3564/19 31 Oct 2019

Within ~100m

Nearby activity

2023 Approved

Southacre Mount Park Road, Harrow On The Hill, Harrow, HA1 3JU

Horse chestnut (T1) - remove - base of tree is now touching the garage and preventing the…

PL/0336/23 24 Oct 2023

2022 Approved

Charnwood Mount Park Road, Harrow On The Hill, Harrow, HA1 3JU

T1 Silver Birch: Crown Lift to provide 4m clearance from ground level. T2 Cherry: Reduce…

P/4103/22 23 Jan 2023

2021 Approved

Valleyfield Mount Park Road, Harrow On The Hill, Harrow, HA1 3JU

Variation of condition 2 (approved plans) attached to planning permission P/1571/20 dated…

P/4068/21 24 Jan 2022

2020 Approved

Southacre Mount Park Road, Harrow On The Hill, Harrow, HA1 3JU

A1 Horse Chestnut (front of garage): Clean to remove all dead, diseased and broken branch…

P/3217/20 17 Nov 2020

2020 Approved

Valleyfield, Mount Park Road, Harrow, HA1 3JU

Alterations & extensions

P/3138/20/PREAPP 21 Oct 2020

2020 Approved

Valleyfield Mount Park Road, Harrow On The Hill, Harrow, HA1 3JU

Single storey side/rear extension to garage and creation of first floor and conversion of…

P/1571/20 15 Oct 2020

2020 Approved

2, Oakley Grange Mount Park Road, Harrow On The Hill, Harrow, HA1 3JU

Oak x 2, Ash x 2 (rear garden, right side): Crown Reduce by removing 3-4m from height and…

P/1939/20 25 Aug 2020

2020 Approved

2, Oakley Grange Mount Park Road, Harrow On The Hill, Harrow, HA1 3JU

T1 Oak (rear garden, rear boundary): Remove broken and hanging branches. Prune overhang b…

P/1016/20 28 Apr 2020

2019 Approved

Charnwood Mount Park Road, Harrow On The Hill, Harrow, HA1 3JU

T1 Magnolia (front): Fell (too close to house) T2 Silver Birch (front): Crown Reduce by r…

P/4024/19 31 Oct 2019

2019 Approved

Valleyfield Mount Park Road, Harrow On The Hill, Harrow, HA1 3JU

TREE PRESERVATION ORDER: No.1 1995 A1 (G1) Lime, Ash, Horse Chestnut, Lombardy Poplar & H…

P/1563/19 26 Jun 2019

2018 Approved

Tall Trees, Mount Park Road, Harrow, HA1 3JU

Details pursuant to conditions 3 (samples of cobble area) and 4 (gravel and paving) attac…

P/3423/18 22 Oct 2018

2018 Approved

Tall Trees, Mount Park Road, Harrow, HA1 3JU

Replacement hardsurfacing to front garden

P/1611/18 13 Jul 2018

2016 Approved

Tall Trees, Mount Park Road, Harrow, HA1 3JU

Oak (front/side): reduce height by 3m. Reshape as required

P/3973/16 3 Oct 2016

2016 Approved

Tall Trees, Mount Park Road, Harrow, HA1 3JU

Front porch; installation of 1.8M high front entrance gates

P/0777/16 6 May 2016

2016 Approved

Tall Trees, Mount Park Road, Harrow, HA1 3JU

T1 oak (front): reduce crown by up to 30% t2 t3 thuja (front): reduce height by 25% trim…

P/0650/16 24 Mar 2016

2016 Approved

Charnwood, Mount Park Road, Harrow, HA1 3JU

Plum (front): prune back from drive to kerb edge multi-stemmed lime (front): raise canopy…

P/0315/16 7 Mar 2016

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

TALL TREES Mount Park Road, Harrow On The Hill, Harrow, HA1 3JU Data via plota.co.uk

Proposal

Application progress

Documents 17

Decision & officer reports 1

Statements & assessments 4

Plans & drawings 6

Application forms 1

Consultation & comments 2

Other documents 3

Site constraints 7

Sales history 3

Other new applications on this street

Nearby new applications

Important details

How this decision compares

Consultation & key dates

Previous applications at this address

Nearby activity