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34 Chartley Avenue, Stanmore, Harrow, HA7 3QZ

PL/2881/26Certificate of Lawful Development ProposedAwaiting decision
Lawful development certificate
Approximate location: the centre of the postcode, not the exact property.

Proposal

Certificate of Lawful Development (Proposed): Alterations and extension to roof to form end gable; rear dormer; rooflight in front roof slope; windows in end gable

Received (week of)
26 October 2026
Ward
Stanmore
  1. Received26 Oct
  2. Validated
  3. Consult.
  4. Target
  5. Decided

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About this application

This is a planning application for a dormer extension at 34 Chartley Avenue, Stanmore, Harrow, HA7 3QZ. Harrow has handled 68 applications of this type. The site is in a conservation area. There have been 2 other applications at this address. In the past year there have been 151 applications across Stanmore. We hold 2,217 applications in total for the HA7 postcode area.

89% of certificate of lawful development proposed 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
HA7 3QZ
Application type
Certificate of Lawful Development Proposed

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations at the address point. Ones next to the site may also apply.

  • 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.

Associated applications

  1. 2026
    26 Oct

    Certificate of Lawful Development (Proposed): Alterations and extension to roof to form end gable; rear…

    This applicationPendingApplicationPL/2881/26
  2. 2026
    26 Oct

    Single storey rear extension; Relocation of the garage, with the rear part to be used as a utility space

    PendingHouseholderFiled alongsidePL/2882/26

Source: Harrow

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

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