Planning application
103 Cornwall Avenue Southall UB1 2TQ
Works: Extension Loft or dormer
Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.
Proposal
Alteration of roof from hip to gable end; and rear roof extension (Application for a Lawful Development Certificate for a Proposed Development)
As published by the council, reference 254463CPL
Application record
- Reference
- 254463CPL
- Type
- Certificate of Lawfulness - Proposed
- Status
- Refused
- Decision
- Refused
- Received
- 26 Nov 2025
- Validated
- 26 Nov 2025
- Decided
- 14 Jan 2026
- Ward
- Lady Margaret
- Decision by
- Delegated Decision
- Postcode
- UB1 2TQ
Site history
Applications at this address on the Old Oak and Park Royal Development Corporation register
This site has had 2 applications since 2025: 1 approved, 1 refused.
-
260944CPL Granted
103 Cornwall Avenue Southall UB1 2TQ
Alteration of roof from hip to gable end; rear roof extension; installation of one rooflight to front roofslope and a window within side gable wall (Lawful Development Certificate for a Proposed Development)
Timeline
Dates from the published record
-
26 Nov 2025
Received by Old Oak and Park Royal Development Corporation
-
14 Jan 2026
Decision issued: Refused
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Consilio Town Planning Agent, a planning consultancy registered in London
Active · incorporated 2017 · London
58 applications on PlanIndex · across 10 councils · 72% 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
4 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
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Open the documentsWhat this refusal means
Old Oak and Park Royal Development Corporation refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. 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
-
103 Cornwall Avenue Southall UB1 2TQ
Alteration of roof from hip to gable end; and rear roof extension (Application for a Lawful Development Certificate for a Proposed Development)
Refused Lawful development Extension Loft or dormer 4 docs -
122 Cornwall Avenue Southall UB1 2TQ
Single storey rear outbuilding (Following the demolition of the rear conservatory)
Granted Householder Extension Demolition 9 docsSmall domestic -
81 Cornwall Avenue Southall UB1 2TQ
75% historically approved · decision due ~18 Aug
Conversion of single dwelling into 2 x self contained flats (2 X 1 Bedroom) with amenity space, bin/cycle stores & off-street parking, and installation of a roof lantern to the single storey rear extension (Retrospective application)
Awaiting decision Full applications New dwelling Extension +1 10 docsSmall domestic -
101 Cornwall Avenue Southall UB1 2TQ
Continue to use the dwellinghouse as HMO (Sui Generis) (Lawful Development Certificate for an Existing Use)
Refused Lawful development 15 docsDomestic -
122 Cornwall Avenue Southall UB1 2TQ
Single storey rear outbuilding (Following the demolition of the rear conservatory)
Granted Householder Extension Demolition 9 docsSmall domestic -
81 Cornwall Avenue Southall UB1 2TQ
75% historically approved · decision due ~18 Aug
Conversion of single dwelling into 2 x self contained flats (2 X 1 Bedroom) with amenity space, bin/cycle stores & off-street parking, and installation of a roof lantern to the single storey rear extension (Retrospective application)
Awaiting decision Full applications New dwelling Extension +1 10 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)