Planning application
20 Forty Avenue, Wembley, HA9 8JP
Works: Extension Loft or dormer Windows or glazing Small domestic
Read from the description, not a valuation. How we read the register
Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.
Proposal
Certificate of lawfulness for proposed single storey rear infill extension, L-shaped rear dormer window with 2x front rooflights and installation of 2x windows to the gable side elevation of the dwellinghouse.
As published by the council, reference 25/3587
Application record
- Reference
- 25/3587
- Type
- Certificate of Lawfulness - Proposed
- Status
- Decided
- Decision
- Certificate of Lawfulness - Refused
- Received
- 24 Dec 2025
- Validated
- 24 Dec 2025
- Decided
- 16 Feb 2026
- Ward
- Preston
- Decision by
- Delegated Team Manager
- Postcode
- HA9 8JP
Site history
Applications at this address on the Brent register
This site has had 4 applications since 2025: 1 approved, 3 refused.
-
26/0880 Granted
20 Forty Avenue, Wembley, HA9 8JP
Prior approval for a single storey rear extension to dwellinghouse, in metres: Extending beyond the rear wall of the original house - 6.00m Maximum height - 3.86m Eaves height - 3.00m
-
26/0812 Refused
20 Forty Avenue, Wembley, HA9 8JP
Prior approval for a single storey rear extension to dwellinghouse, in metres: Extending beyond the rear wall of the original house - 6.00m Maximum height - 3.86m Eaves height - 3.00m
-
26/0589 Refused
20 Forty Avenue, Wembley, HA9 8JP
Certificate of lawfulness for proposed single storey rear infill extension, rear dormer extension with dormer to rear outrigger, 2x front rooflights and installation of 2x windows to gable side elevation of the dwellinghouse.
Timeline
Dates from the published record
-
24 Dec 2025
Received by Brent
-
16 Feb 2026
Decision issued: Certificate of Lawfulness - Refused
-
10 Aug 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Agent on file, a design practice registered in London
23 applications on PlanIndex · across 10 councils · 77% granted
Trade members see who it is, their full track record, and every application they have filed.
See who's behind itDocuments
Plans, drawings, consultee responses and the officer's report
14 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
Brent 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
-
30 Forty Avenue, Wembley, HA9 8JP
Proposed ground floor side extension; first floor side and rear extension; loft conversion with dormer window and installation of 3 x front facing rooflights to dwellinghouse
Withdrawn Householder Extension Loft or dormer +1 2 docsDomestic -
32 Forty Avenue, Wembley, HA9 8JP
Demolition of existing dwellinghouse and erection of part 3 storey part 4 storey building comprising 7 self-contained flats, creation of basement floor level, private and communal amenity spaces, associated off road parking, waste and cycle storage
Refused Full applications New dwelling Demolition 31 docsDomestic -
20 Forty Avenue, Wembley, HA9 8JP
Certificate of lawfulness for proposed single storey rear infill extension, rear dormer extension with dormer to rear outrigger, 2x front rooflights and installation of 2x windows to gable side elevation of the dwellinghouse.
Refused Lawful development Extension Loft or dormer +1 14 docsSmall domestic -
34 Forty Avenue, Wembley, HA9 8JP
Demolition of existing dwellinghouse and erection of part 3 storey part 4 storey building comprising 7 self-contained flats, creation of basement floor level, private and communal amenity spaces, associated off road parking, waste and cycle storage
Refused Full applications New dwelling Demolition 29 docsDomestic -
30 Forty Avenue, Wembley, HA9 8JP
Certificate of lawfulness for proposed hip to gable loft conversion with rear dormer window and installation of 3 x front facing rooflights to dwellinghouse
Granted Lawful development Loft or dormer Windows or glazing 9 docsDomestic -
20 Forty Avenue, Wembley, HA9 8JP
Prior approval for a single storey rear extension to dwellinghouse, in metres: Extending beyond the rear wall of the original house - 6.00m Maximum height - 3.86m Eaves height - 3.00m
Refused Prior approval Extension 9 docsSmall domestic
Other lawful development applications
In Brent
-
26/0783 Granted
3 Hamilton Road, London, NW10 1NU
Certificate of lawfulness for existing single-storey rear extension to dwellinghouse
-
26/1946 Awaiting decision
120 Gladstone Park Gardens, London, NW2 6RL
Certificate of lawfulness for proposed rear dormer extension with Juliet balcony, hip to gable roof extension, installation of 1x window to side elevation and 2x front rooflights to dwellinghouse.
-
26/1208 Granted
50 Ballogie Avenue, London, NW10 1TA
Certificate of lawfulness for proposed rear dormer extension, hip to gable roof extension, alteration to fenestration and installation of rooflights to the dwellinghouse
-
26/1015 Refused
5 Midholm, Wembley, HA9 9LJ
Certificate of lawfulness for proposed installation of solar panels to the side and rear roofslope of the dwellinghouse.
-
26/1176 Refused
47 Barn Rise, Wembley, HA9 9NH
Certificate of lawfulness for proposed single storey outbuilding in rear garden of the dwellinghouse.