Planning application
4 Mount Avenue Southall UB1 2LH
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
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)
As published by the council, reference 260700CPL
Application record
- Reference
- 260700CPL
- Type
- Certificate of Lawfulness - Proposed
- Status
- Refused
- Decision
- Refused
- Received
- 18 Feb 2026
- Validated
- 18 Feb 2026
- Decided
- 10 Apr 2026
- Ward
- Lady Margaret
- Decision by
- Delegated Decision
- Postcode
- UB1 2LH
Site history
Applications at this address on the Ealing register
This site has had 4 applications since 2026: 0 approved, 2 refused.
-
262196CPL Decided
4 Mount Avenue Southall UB1 2LH
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)
-
262197PALHE Awaiting decision
4 Mount Avenue Southall UB1 2LH
Single storey (Max 6m deep and Max 3m high) rear extension (42 days Prior Notification Process)
-
260699HH Refused
4 Mount Avenue Southall UB1 2LH
Single storey rear and side extension (following demolition of existing rear extension)
Timeline
Dates from the published record
-
18 Feb 2026
Received by Ealing
-
10 Apr 2026
Decision issued: Refused
-
11 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
5 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.
Trade members open them from here.
Open the documentsWhat this refusal means
Ealing 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 500 metres
-
4 Mount Avenue Southall UB1 2LH
Single storey rear and side extension (following demolition of existing rear extension)
Refused Householder Extension Demolition 8 docsSmall domestic -
4 Mount Avenue Southall UB1 2LH
Single storey rear and side extension (following demolition of existing rear extension)
Refused Householder Extension Demolition 8 docsSmall domestic -
4 Mount Avenue Southall UB1 2LH
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)
Refused Lawful development Extension Loft or dormer 5 docs -
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 -
4 Mount Avenue Southall UB1 2LH
87% historically approved · decision due ~25 Jul
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)
Decided Extension Loft or dormer
Other lawful development applications
In Ealing
-
261588CPL Granted
13 Julien Road Ealing W5 4XA
Rear roof extension, and installation of two roof lights to front roofslope (Lawful Development Certificate for a Proposed Development)
-
261863CPE Granted
66 Horn Lane Acton W3 6NT
Continue to use the property as two self-contained flats (Lawful Development Certificate for Existing Use)
-
260202CPL Withdrawn
19 Woodrow Close Perivale UB6 7HU
Change of use of a dwellinghouse (Use Class C3) to Children's Care Home (Use Class C2) (Lawful Development Certificate for a Proposed Development)
-
261805CPE Refused
10A Western Avenue Acton W3 7UD
Existing use of first floor/second floor duplex flat (Use Class C3) as a small House in Multiple Occupation (Use Class C4) (Lawful Development Certificate for an Existing Use)
-
261806CPE Refused
12 Western Avenue Acton W3 7UD
Continue use of ground floor flat as HMO (C4) (Lawful Development Certificate for Existing Use)