15 Runnelfield, South Harrow, Harrow, HA1 3NY Data via plota.co.uk

Pending PL/2590/26 - Householder
Extensions & alterations
Council
Harrow 4.9/10
Date received
29 Sept 2026
Postcode
HA1 3NY
Type
Householder

Description

Single storey rear extension; removal of the existing porch; replacement of existing windows, including alterations to fenestration; raising of the flat roof to the side extension; replacement of existing cladding with new timber cladding; replacement of existing concrete roof tiles with natural slate roof tiles; and installation of a driveway gate Data via plota.co.uk

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Last checked

Decision outlook

Plota predicts a decision around 24 Nov 2026, from Harrow's recent extensions.

Day 5 of the 56-day target. Harrow usually decides extensions by day 56.

Day 551 days to the 56-day target
84%decided within 8 weeks
78%approved
1,672decided in the last year

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

Site constraints 6

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
Conservation area about 53 m away: South Hill Avenue Conservation Area Harrow on the; Inside the Harrow built-up area; Priority habitat about 18 m away: Deciduous woodland; Metropolitan Open Land about 23 m away.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 3 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. 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.

Sales history 1

Last sold for £1,200,000 in October 2015. Detached house, freehold.

30 October 2015£1,200,000

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

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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

2025 Refused
Reduction of front porch, Alterations to roof of side extension to raise height, Single a…
PL/1279/25
Within ~100m

Nearby activity

2025
The Cottage Hill Close, Harrow, HA1 3PQ
Front Porch
PL/3356/25
2025 Approved
Clovelly Hill Close, Harrow, HA1 3PQ
Single storey rear extension, External alterations ( Demolition of rear conservatory)
PL/0397/25
2023 Approved
Clovelly Hill Close, Harrow, HA1 3PQ
Front Porch, installation and replacement of side and front facing windows, main front do…
PL/0135/23
2023 Refused
Clovelly Hill Close, Harrow, HA1 3PQ
Front porch; installation and replacement of garage door, front entrance door and windows…
P/1797/23
2023 Approved
10 Runnelfield, South Harrow, Harrow, HA1 3NY
A1 Oak (side / rear garden): Reduce Crown by 20% (by 2.5m on width and 2m on height). Cro…
P/1628/23
2023 Approved
8 Runnelfield, Harrow, HA1 3NY
Single storey front infill extension incorporating porch; conversion of garage to habitab…
P/1344/23
2022 Approved
12 Runnelfield, South Harrow, Harrow, HA1 3NY
Single and two storey rear extension; conversion of garage to habitable room with install…
P/3795/22
2022 Approved
Tivon Hill Close, Harrow, HA1 3PQ
Alterations and extension to raise roof height; rear dormer; rooflights in front, side an…
P/4308/22
2022 Approved
7 Runnelfield, South Harrow, Harrow, HA1 3NY
Two storey side to rear extension to form new attached dwellinghouse; Vehicle access; Cyc…
P/2553/22
2022 Approved
14 Runnelfield, South Harrow, Harrow, HA1 3NY
T1 Yew (front garden): Raise Crown 1m, trim back on all sides as far as foliage permits…
P/2743/22
2022 Approved
The Steps Hill Close, Harrow, HA1 3PQ
T1 Oak (rear garden rear boundary): Crown Reduce back to previous pruning points by remov…
P/2669/22
2021 Approved
5 Runnelfield, South Harrow, Harrow, HA1 3NY
T1 Cedar - reduce height by 4m, reshape in proportion and lift over road. Reason - tree h…
P/4330/21
2021 Approved
7 Runnelfield, Harrow, HA1 3NY
Single and two storey side to rear extension to form new attached dwellinghouse; external…
P/2184/20/5855
2020 Approved
Amaris Hill Close, Harrow, HA1 3PQ
Yew (T1) - trim all over as previously, lift to give 6 feet headroom
P/0832/20
2021 Withdrawn
Welland, 2 Hill Close, Harrow, HA1 3PQ
Two storey rear extension; rear dormer; rooflight in rear roofslope; external alterations
P/0145/21
2020 Approved
11 Runnelfield, South Harrow, Harrow, HA1 3NY
A1 Oak: Reduce Crown back to previous points to contain A1 Ash: Reduce crown to previous…
P/3139/20
2020 Approved
Clifton House Hill Close, Harrow, HA1 3PQ
Ash (T1) - reduce to previous reduction points (3-4 metres approx.) Purple leaf plum (T2)…
P/3999/20
2020 Refused
7 Runnelfield, South Harrow, Harrow, HA1 3NY
Single and two storey side to rear extension to form new attached dwellinghouse; External…
P/2184/20
2020 Refused
7 Runnelfield, South Harrow, Harrow, HA1 3NY
Two storey side extension to form new attached dwellinghouse; Cycle and Refuse storage; S…
P/0370/20
2019 Approved
11 Runnelfield, Harrow, HA1 3NY
Single storey side to rear extension; conversion of garage to habitable room; external al…
P/1671/19
2016 Approved
9 Runnelfield, Harrow, HA1 3NY
A1 holm oak (rear garden): fell due to close proximity to property. Insufficient space fo…
P/4141/16
2016 Approved
The Cottage, Hill Close, Harrow, HA1 3PQ
Installation of 1.6M retaining wall and gate to the side
P/2434/16
2016 Approved
Tivon, Hill Close, Harrow, HA1 3PQ
Purple plum (front): reduce by 30% and reshape t2 crab apple (front): reduce by 30% and r…
P/2119/16
2016 Withdrawn
The Cottage Hill Close, Harrow, HA1 3PQ
WITHDRAWN (COUNCIL) - App submitted twice with different agents. applicant only wants to…
P/2077/16
2016 Approved
Amaris, Hill Close, Harrow, HA1 3PQ
T1 yew (front larger of two): reshape to previous pruning points t2 yew (front closest to…
P/0970/16
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

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.