Planning application
15 Allenby Road Southall UB1 2EU
Works: Extension Loft or dormer
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Rear roof extension incorporating a flat roof rear dormer; and installation of three roof lights to front roofslope (Lawful Development Certificate for a Proposed Development)
As published by the council, reference 260691CPL
Application record
- Reference
- 260691CPL
- Type
- Certificate of Lawfulness - Proposed
- Status
- Permitted Development
- Decision
- Granted As published: Permitted Development
- Received
- 18 Feb 2026
- Validated
- 18 Feb 2026
- Decided
- 13 Apr 2026
- Ward
- Lady Margaret
- Decision by
- Delegated Decision
- Postcode
- UB1 2EU
Site history
Applications at this address on the Old Oak and Park Royal Development Corporation register
This site has had 3 applications since 2026: 1 approved, 1 refused.
-
263059FUL Awaiting decision
15 Allenby Road Southall UB1 2EU
Conversion of single dwelling house into 2 self-contained flats with associated refuse storage, bicycle parking and amenity space; rear roof extension; rear outrigger roof extension; installation of three rooflight
-
262335FUL Refused
15 Allenby Road Southall UB1 2EU
Conversion of a single dwellinghouse into two self-contained flats; rear dormer extension; installation of three rooflights to front roofslope; with associated cycle storage, refuse and recycling storage and amenity space
Timeline
Dates from the published record
-
18 Feb 2026
Received by Old Oak and Park Royal Development Corporation
-
13 Apr 2026
Decision issued: Permitted Development
-
10 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
6 documents on file for this application
- OFFICERS REPORT
- DECISION NOTICE
- APPLICATION FORM REDACTED
- LOCATION PLAN
- SUBMITTED EXISTING AND PROPOSED FLOOR PLANS AND ELEVATIONS
- LOCATION AND BLOCK PLAN
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 13 April 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
-
15 Allenby Road Southall UB1 2EU
Rear roof extension incorporating a flat roof rear dormer; and installation of three roof lights to front roofslope (Lawful Development Certificate for a Proposed Development)
Granted Lawful development Extension Loft or dormer 6 docs -
15 Allenby Road Southall UB1 2EU
Conversion of a single dwellinghouse into two self-contained flats; rear dormer extension; installation of three rooflights to front roofslope; with associated cycle storage, refuse and recycling storage and amenity space
Refused Full applications New dwelling Extension +1 8 docsDomestic -
15 Allenby Road Southall UB1 2EU
75% historically approved · decision due ~5 Oct
Conversion of single dwelling house into 2 self-contained flats with associated refuse storage, bicycle parking and amenity space; rear roof extension; rear outrigger roof extension; installation of three rooflight
Awaiting decision Full applications New dwelling Extension +1 8 docsDomestic -
15 Allenby Road Southall UB1 2EU
Conversion of a single dwellinghouse into two self-contained flats; rear dormer extension; installation of three rooflights to front roofslope; with associated cycle storage, refuse and recycling storage and amenity space
Refused New dwelling Extension +1 8 docsDomestic -
42 Mount Avenue Southall UB1 2LH
Single rear and side extension.
Granted Householder Extension 13 docsDomestic -
42 Mount Avenue Southall UB1 2LH
Single rear and side extension.
Granted Householder Extension 13 docsDomestic
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)