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33 Borrowdale Avenue, Harrow, HA3 7PY

P/1463/09Cert.Lawful Proposed Devt.(DEL)Approved
Outline / PiP

Approved on 20 August 2009

Council decision: GrantDelegated (officer decision)

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

Certificate of lawful proposed development: alterations to roof to form end gable and rear dormer; insertion of two rooflights on front of roof and window to side elevation.

Received
25 June 2009
Decision level
Delegated (officer decision)
Ward
Marlborough
  1. Received25 Jun
  2. Validated1 Jul
  3. Consult.
  4. Target
  5. Decided20 Aug

Decided in 50 days (council typically 56)

About this application

This is an outline application for a dormer extension at 33 Borrowdale Avenue, Harrow, HA3 7PY. Harrow has handled 2,393 applications of this type. This one was decided in 56 days. The site is in a conservation area. There are no previous applications recorded at this address. In the past year there have been 94 applications across Marlborough. We hold 5,586 applications in total for the HA3 postcode area.

84% of outline 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
HA3 7PY
Application type
Cert.Lawful Proposed Devt.(DEL)
Scale / size
Small

Planning application dates

Date validated
1 July 2009

Applicant and agent

Agent address
13 Richmond Way Croxley Green Rickmansworth Wd3 3Sf

Additional information

UPRN
100021254177
Documents
8

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • 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 (22)

flood storage areas, conservation areas, listed buildings, green belt, 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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