Planning application
18 Dorset Avenue Southall UB2 4HF
Works: Extension Loft or dormer
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Alteration of roof from hip to gable end; rear roof extension incorporating a Juliet balcony; and installation two rooflights to front roofslope (Lawful Development Certificate for a Proposed Development)
As published by the council, reference 261157CPL
Application record
- Reference
- 261157CPL
- Type
- Certificate of Lawfulness - Proposed
- Status
- Permitted Development
- Decision
- Granted As published: Permitted Development
- Received
- 16 Mar 2026
- Validated
- 7 Apr 2026
- Decided
- 3 Jun 2026
- Ward
- Norwood Green
- Decision by
- Delegated Decision
- Postcode
- UB2 4HF
Site history
Applications at this address on the Old Oak and Park Royal Development Corporation register
This site has had 3 applications since 2026: 2 approved, 0 refused.
-
262421HH Awaiting decision
18 Dorset Avenue Southall UB2 4HF
Part single and part two storey rear/side extension incorporating Juliet balcony; two storey side extension; front porch extension; alteration of roof from hip to gable end; rear roof extension; installation of three rooflights to front roofslope (following demolition of existing rear conservatory, side extension); and alteration to fenestration
-
261244PALHE Granted
18 Dorset Avenue Southall UB2 4HF
Single storey (Max 6m deep and Max 3.43m high) rear extension (42 days Prior Notification Process)
Timeline
Dates from the published record
-
16 Mar 2026
Received by Old Oak and Park Royal Development Corporation
-
7 Apr 2026
Validated
Checked as complete and ready for consideration.
-
3 Jun 2026
Decision issued: Permitted Development
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Belgravia Design & Build Ltd Agent, a design practice registered in London
Active · incorporated 2019 · London
48 applications on PlanIndex · across 7 councils · 97% 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
5 documents on file for this application
- DECISION NOTICE
- OFFICERS REPORT
- ALL IN ONE
- APPLICATIONFORMREDACTED
- LOCATION 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 3 June 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
-
18 Dorset Avenue Southall UB2 4HF
Single storey (Max 6m deep and Max 3.43m high) rear extension (42 days Prior Notification Process)
Granted Prior approval Extension 4 docsSmall domestic -
18 Dorset Avenue Southall UB2 4HF
Alteration of roof from hip to gable end; rear roof extension incorporating a Juliet balcony; and installation two rooflights to front roofslope (Lawful Development Certificate for a Proposed Development)
Granted Lawful development Extension Loft or dormer 5 docs -
18 Dorset Avenue Southall UB2 4HF
Single storey (Max 6m deep and Max 3.43m high) rear extension (42 days Prior Notification Process)
Granted Prior approval Extension 4 docsSmall domestic -
46 Blandford Road Southall UB2 4JY
Addition of an external wall insulation to the elevation to the property at the cladded areas. Installing the External Wall insulation up to the Party Wall in some areas, adding the necessary finish that will be a rendered finish (Colour: to match/contrast with existing being a white) & Existing roof to be removed and replaced with warm roof system with GRP or similar finish, raising the existing roof ridge & reducing the high level window, & New external windows and doors with like for like materials (to match existing).
Granted Householder Windows or glazing 9 docsDomestic -
33,34,35,36, 37 & 38 Blandford Road Southall UB2 4JY
Installation of external wall insulation with a rendered finish to the front-facing cladded areas on the existing clerestory roof; replacement of existing roof with warm roof system with GRP or similar finish; replacement of existing front facing window on the clerestory roof; raising the existing roof ridge; and replacement of existing windows and doors (at No. 37 only) (Joint Application)
Granted Full applications Roofing Windows or glazing 13 docs -
33,34,35,36, 37 & 38 Blandford Road Southall UB2 4JY
Installation of external wall insulation with a rendered finish to the front-facing cladded areas on the existing clerestory roof; replacement of existing roof with warm roof system with GRP or similar finish; replacement of existing front facing window on the clerestory roof; raising the existing roof ridge; and replacement of existing windows and doors (at No. 37 only) (Joint Application)
Granted Full applications Roofing Windows or glazing 13 docs
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)