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8 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ

PL/2178/26HouseholderApproved

Approved on 9 November 2026

Council decision: Grant Conditionally

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

Front porch and relocation of entrance to front; single storey side to rear extension; creation of first floor to bungalow to form two storey dwellinghouse; first floor side extension; two front dormers and one rear; landscaping; external alterations

Submitted
17 September 2026
Ward
Hatch End
  1. Received17 Sep
  2. Validated
  3. Consult.
  4. Target
  5. Decided9 Nov

Decided in 53 days (council typically 56)

About this application

This is a planning application for a rear extension at 8 Derwent Avenue, Hatch End, Pinner, Harrow, HA5 4QJ. Harrow has handled 168 applications of this type. This one was decided in 53 days, 3 days quicker than Harrow's typical decision time. The site is in a conservation area. There has been 1 other application at this address. In the past year there have been 118 applications across Hatch End. We hold 1,739 applications in total for the HA5 postcode area.

79% of householder applications at London Borough of Harrow were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Application details

Postcode
HA5 4QJ
Application type
Householder

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Green belt: HarrowPart of the site
  • Flood zone 1: Low probability (rivers and sea)

Not published by this council, so not checked: Article 4 directions. Ask the council if these matter.

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (21)

flood storage areas, conservation areas, listed buildings, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Source: Harrow

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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