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19 Penwerris Avenue, Isleworth, TW7 4QT

P/2024/2055Lawful Development Certificate (Proposed)Approved
Outline / PiP

Approved on 23 July 2024

Council decision: GRANT

Approximate location: the centre of the postcode, not the exact property.

Proposal

Certificate of Lawfulness for proposed hip to gable conversion and rear roof extension with a Juliette balcony and three front roof windows

Received
22 June 2024
Ward
Osterley & Spring Grove
  1. Received22 Jun
  2. Validated22 Jun
  3. Consult.22 Jun
  4. Target
  5. Decided23 Jul

Decided in 31 days (council typically 56)

About this application

This is an outline application for an extension at 19 Penwerris Avenue, Isleworth, TW7 4QT. Hounslow has handled 1,060 applications of this type. This one was decided in 31 days, 4 weeks quicker than Hounslow's typical decision time. There has been 1 other application at this address. We hold 894 applications in total for the TW7 postcode area.

82% of outline applications at London Borough of Hounslow 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
TW7 4QT
Application type
Lawful Development Certificate (Proposed)
Scale / size
Small

Planning application dates

Date validated
22 June 2024
Consultation expiry
22 June 2024
Consultation end
22 June 2024
Application expires
16 August 2024

Planning decision

Statutory period
55 days

Additional information

Documents
7

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

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

  • Article 4 direction: Dwellinghouses (C3) to small HMOs (C4) - borough-wide Article 4 Direction
  • Flood zone 1: Low probability (rivers and sea)

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.

Planning history at this site

1 other application at this property, newest first.

  1. 2024
    4 Aug

    Alterations to the first floor front bay window

    ApprovedHouseholderP/2024/2664

Source: Hounslow

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

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