Planning application
52 Cowper Road Hanwell W7 1EH
Works: Loft or dormer
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Construction of rear dormer; installation of four front rooflights (Application for a Lawful Development Certificate for a Proposed Development)
As published by the council, reference 261302CPL
Application record
- Reference
- 261302CPL
- Type
- Certificate of Lawfulness - Proposed
- Status
- Permitted Development
- Decision
- Granted As published: Permitted Development
- Received
- 26 Mar 2026
- Validated
- 26 Mar 2026
- Decided
- 28 May 2026
- Ward
- North Hanwell
- Decision by
- Delegated Decision
- Postcode
- W7 1EH
Site history
Applications at this address on the Old Oak and Park Royal Development Corporation register
This site has had 2 applications since 2025: 2 approved, 0 refused.
-
254587HH Granted
52 Cowper Road Hanwell W7 1EH
Single storey rear extension (Following demolition of rear structure)
Timeline
Dates from the published record
-
26 Mar 2026
Received by Old Oak and Park Royal Development Corporation
-
28 May 2026
Decision issued: Permitted Development
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
56three Architects Ltd Agent, an architecture practice registered in Edinburgh
Active · incorporated 2005 · Edinburgh
32 applications on PlanIndex · across 7 councils · 100% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
13 documents on file for this application
- PROPOSED ELEVATIONS
- EXISTING AND PROPOSED SECTION A-A
- OFFICERS REPORT
- DECISION NOTICE
- APPLICATION FORM REDACTED
- SITE LOCATION PLAN
- EXISTING FLOOR PLANS
- EXISTING SITE PLAN
- EXISTING ELEVATIONS
- PROPOSED FIRST FLOOR PLAN
- PROPOSED SECOND FLOOR PLAN
- PROPOSED ROOF PLAN
- PERMITTED DEVELOPMENT ASSESSMENT
Watch members (£5 a month) open the document list from here.
Open the documentsWhat this grant of permission means
Old Oak and Park Royal Development Corporation granted permission on 28 May 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About lawful development applications
A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
52 Cowper Road Hanwell W7 1EH
Construction of rear dormer; installation of four front rooflights (Application for a Lawful Development Certificate for a Proposed Development)
Granted Lawful development Loft or dormer 13 docs -
52 Cowper Road Hanwell W7 1EH
Single storey rear extension (Following demolition of rear structure)
Granted Householder Extension Demolition 16 docsSmall domestic -
52 Cowper Road Hanwell W7 1EH
Single storey rear extension (Following demolition of rear structure)
Granted Householder Extension Demolition 16 docsSmall domestic -
54 Cowper Road Hanwell W7 1EH
Single storey rear extension (following demolition of existing conservatory)
Granted Householder Extension Demolition 10 docsSmall domestic -
54 Cowper Road Hanwell W7 1EH
Rear roof extension incorporating a Juliet balcony; installation of two rooflights to rear dormer; and installation of three rooflights to front roofslopes (Lawful Development Certificate for a Proposed Development)
Granted Lawful development Extension Loft or dormer 8 docs -
54 Cowper Road Hanwell W7 1EH
Single storey rear extension (max 5.00m deep and max 3.56m high) (following demolition of existing conservatory) (42 Days Prior Approval Notification Process)
Refused Prior approval Extension Demolition 5 docsSmall domestic
Other lawful development applications
In Old Oak and Park Royal Development Corporation
-
263142CPL Granted
42 Gloucester Road Acton W3 8PD
Roof extension to rear (main) roof slope; part rear roof extension to rear outrigger roof slope and installation of two roof lights to front roofslope (Lawful Development Certificate for a Proposed Development)
-
263690CPL Awaiting decision
133 Trinity Road Southall UB1 1ES
Rear roof extension, and installation of three roof lights to front roofslope (Lawful Development Certificate for a Proposed Development)
-
262683CPE Granted
1 Speldhurst Road Chiswick W4 1BX
Continuous use of conversion of the roof space to provide additional habitable accommodation, installation of rooflights to the front roof slope and a rear dormer and construction of a single-storey rear extension. External materials to match the existing dwelling (Lawful Development Certificate for an Existing Development)
-
254066CPE Refused
37 Robin Hood Way Greenford UB6 7QN
Use of ground floor flat and first/second floor flat (Use Class C3) as 2 x House in Multiple Occupation (Use Class C4) (Certificate of Lawfulness for an Existing Use)
-
262883CPL Granted
90 Church Road Hanwell W7 3BE
Rear roof extension (following removal of chimney); installation of two rooflight to front roofslope (Lawful Development Certificate for a Proposed Development)