46 Crown Street, Harrow Hill, Harrow, HA2 0HR Data via plota.co.uk

PL/2694/26 - Householder Pending Consideration
Extensions & alterations

Proposal

Single storey side extension; installation and replacement of windows; replacement of soffits and fascia to PVCu and all associated works; external alterations (demolition of lean-to) Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
12 Oct 2026
Decision
Expected by 7 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 7 Dec 2026, from Harrow's recent extensions.

Documents 6

Statements & assessments 1

PDF Heritage statement Report/Assessment · 12 Oct 2026 View ↗

Plans & drawings 3

PDF glazing details Plans · 12 Oct 2026 View ↗ PDF Location plan Plans · 12 Oct 2026 View ↗ PDF Proposed & existing floor plans & elevations Plans · 12 Oct 2026 View ↗

Application forms 1

PDF Application Form redacted Application Form (Redacted) · 12 Oct 2026 View ↗

Other documents 1

PDF CIL CIL Document · 12 Oct 2026 View ↗

All documents on the council site ↗

Site constraints 9

Harrow on-the-Hill / Village 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.
6 listed buildings within 150 m
Nearest: 56, Crown Street, Grade II, 55 m away · 6 Grade II
The site itself is not listed. 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 all 6 with distances
Historic England ↗
Also on the record
Registered park or garden 230 m away: Harrow Park (Formerly Flambards); Inside the Harrow built-up area; Public transport access: PTAL 2 (poor), TfL 2023, for the 100 m square; Metropolitan Open Land 72 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.

Sales history 1

Last sold for £465,000 in November 2001. Detached house, freehold.

8 November 2001£465,000

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

Building

Floor area180 m² (1,938 sq ft)
Energy ratingD (63 out of 100), could reach C
PropertyDetached house, 6 habitable rooms
Built1976 to 1982
HeatingBoiler and radiators, mains gas
WallsCavity wall, as built, partial insulation (assumed)

From the energy performance certificate lodged in April 2024, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Other new applications on this street

15 Jun 2026Approved

61 Crown Street, Harrow Hill, Harrow, HA2 0HX

Certificate of lawful development (proposed): Conversion of garage into habitabl...

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Nearby new applications

13 Oct 2026Pending

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12 Oct 2026Pending

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PL/2729/26
15 Oct 2026Pending

HARROW SCHOOL RYAN THEATRE Yew Walk, Harrow On The Hill, Harrow, HA1 3EJ

Tree Number - G4 Tree Type - Group of 9x Sycamore, 1x Yew Approx. Diameter at 1....

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6 Oct 2026Pending

30 Shaftesbury Avenue, South Harrow, Harrow, HA2 0PH

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5 Oct 2026Pending

G5 Business Consulting Ltd, Unit 2, 2, THE BROADWAY Northolt Road, South Harrow, Harrow, HA2 0DL

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29 Sept 2026Pending

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Important details

Council
Harrow
Application type
Householder
Postcode
HA2 0HR
Received
12 Oct 2026
Validated
12 Oct 2026
Ward
Harrow on the Hill
Case officer
Show
Target decision
7 Dec 2026
Decision level
Delegated decision
Applicant
Show
Agent
Studio 136 Architects Ltd

Decision outlook

Day 7 of the 56-day target. Harrow usually decides extensions by day 56.

Day 749 days to the 56-day target
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
7 Dec 2026

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

2022 Approved
4 x Cypress (rear garden):: Reduce in height by 4 ft, trim sides by 2 ft Reason: general…
P/0051/22
Within ~100m

Nearby activity

2025 Approved
31, Leigh Court Byron Hill Road, Harrow On The Hill, Harrow, HA2 0HZ
Byron Hill Conservation Area T1 Magnolia: Reduce and shape canopy by 1.5m in height and r…
PL/3033/25
2025 Approved
26, Leigh Court Byron Hill Road, Harrow On The Hill, Harrow, HA2 0HZ
T1: Eucalyptus (globulus) located on the lefthand side of the rear garden – request to Fe…
PL/3035/25
2025 Approved
21 Crown Street, Harrow Hill, Harrow, HA2 0HX
Alterations to roof to form rear dormer, Roof light in rear roof slope
PL/2499/25
2025 Approved
56 Crown Street, Harrow Hill, Harrow, HA2 0HR
Harrow on the Hill Village Conservation Area Ash (rear garden): Crown Reduce by up to 30%…
PL/2264/25
2025 Approved
31, Leigh Court Byron Hill Road, Harrow On The Hill, Harrow, HA2 0HZ
Byron Hill Road Conservation Area T1 Eucalyptus (rear garden): Outgrown location. Remove
PL/1313/25
2025
3 Wellington Terrace, Harrow On The Hill, Harrow, HA1 3EP
Replacement windows in front elevation
PL/1169/25
2025 Approved
36 Crown Street, Harrow Hill, Harrow, HA2 0HR
Replacement stairs to front elevation, Replacement door and window in ground floor front…
PL/0563/25
2025 Refused
19 Crown Street, Harrow Hill, Harrow, HA2 0HX
Replacement door to storage cupboard in front elevation, Detached outbuilding at side for…
PL/0370/25
2024 Approved
19 Crown Street, Harrow Hill, Harrow, HA2 0HX
Replacement and enlargement of ground floor patio doors in rear elevation
PL/2540/24
2024 Approved
Mission House West Street, Harrow On The Hill, Harrow, HA1 3EH
L isted Building Consent: External alterations to south and east elevations including sig…
PL/2046/24
2024 Approved
Old Pye House, West Street, Harrow, HA1 3EH
Listed building consent: demolition of a 1960s breezeblock lean-to extension and Victoria…
PL/1590/24
2024
Old Pye House, West Street, Harrow, HA1 3EH
Demolition of lean-to extension and Victorian toilet block; construction of a detached si…
PL/1589/24
2024 Approved
10 Waldron Road, Harrow On The Hill, Harrow, HA2 0HU
Single storey rear conservatory extension (demolition of conservatory)
PL/1049/24
2024 Approved
32, Leigh Court Byron Hill Road, Harrow On The Hill, Harrow, HA2 0HZ
T1 Sycamore (front communal garden area next to the carpark ): Reduce and shape canopy by…
PL/0664/24
2024 Approved
36 Crown Street, Harrow Hill, Harrow, HA2 0HR
Replacement of front door and all windows; existing ground floor level to be lowered; sin…
PL/0469/24
2024 Approved
13 Wellington Terrace, Harrow On The Hill, Harrow, HA1 3EP
Harrow on the Hill Village Conservation Area SG1 - Mixed species shrubs including Viburnu…
PL/0349/24
2023 Approved
8, Leigh Court Byron Hill Road, Harrow On The Hill, Harrow, HA2 0HZ
T1 Cypress (rear garden, r/hand boundary): Cypress has outgrown its location. Fell to gro…
P/2310/23
2023 Approved
Srm Plastics Ltd, S R M Works West Street, Harrow On The Hill, Harrow, HA1 3EH
Details pursuant to Condition 8 (landscaping plan/biodiversity) attached to planning perm…
P/1177/23
2023 Approved
Srm Plastics Ltd, S R M Works West Street, Harrow On The Hill, Harrow, HA1 3EH
Details pursuant to conditions 5 (drawings/sample), 8 (landscaping plan), 12 (hard and so…
P/0711/23
2023 Approved
14 Waldron Road, Harrow On The Hill, Harrow, HA2 0HU
Replacement windows in front elevation
P/1618/23
2016 Approved
65 Crown Street, Harrow, HA2 0HX
4 X silver birch (front garden left boundary): crown reduce by removing approximately 3-4…
P/3608/16
2016 Approved
59 Crown Street, Harrow, HA2 0HX
Horse chestnut (aesculus hippocastanum) (t1) (approximate height 15m) rear garden rear bo…
P/2340/16
2016 Approved
Garages Adjacent 1, Victoria Terrace, Harrow, HA1 3EW
2 Prunus trees: cut back re-growth from telephone wires & street light. 1 Thorn tree: red…
P/2813/16
2016 Approved
48 Crown Street, Harrow, HA2 0HR
Single storey rear extension
P/0853/16
2016
6 Crown Street, Harrow, HA2 0HR
Installation of two rooflights in rear roofslope
P/3967/15/4934
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.

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.