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Planning application

20 Forty Avenue, Wembley, HA9 8JP

Refused Brent 26/0589 Certificate of Lawfulness - Proposed

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, rear dormer extension with dormer to rear outrigger, 2x front rooflights and installation of 2x windows to gable side elevation of the dwellinghouse.

As published by the council, reference 26/0589

Application record

Reference
26/0589
Type
Certificate of Lawfulness - Proposed
Status
Decided
Decision
Refused As published: Certificate of Lawfulness - Refused
Received
9 Mar 2026
Validated
9 Mar 2026
Decided
29 Apr 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

    Decided 11 May 2026 Prior approval
  • 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

    Decided 1 Apr 2026 Prior approval
  • 25/3587 Refused

    20 Forty Avenue, Wembley, HA9 8JP

    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.

    Decided 16 Feb 2026 Lawful development

Timeline

Dates from the published record

  1. 9 Mar 2026

    Received by Brent

  2. 29 Apr 2026

    Decision issued: Certificate of Lawfulness - Refused

  3. 25 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Better Building Design Ltd. Agent, a design practice registered in London

Active · incorporated 2017 · London

24 applications on PlanIndex · across 11 councils · 78% granted

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See their track record

Documents

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.

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What 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

    20/4071 Submitted 9 Dec 2020 0m away

    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 docs
    Domestic
  • 20 Forty Avenue, Wembley, HA9 8JP

    25/3587 Submitted 24 Dec 2025 0m away

    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.

    Refused Lawful development Extension Loft or dormer +1 14 docs
    Small domestic
  • 32 Forty Avenue, Wembley, HA9 8JP

    22/0809 Submitted 2 Mar 2022 0m away

    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 docs
    Domestic
  • 34 Forty Avenue, Wembley, HA9 8JP

    22/0810 Submitted 2 Mar 2022 0m away

    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 docs
    Domestic
  • 30 Forty Avenue, Wembley, HA9 8JP

    20/3024 Submitted 24 Sep 2020 0m away

    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 docs
    Domestic
  • 20 Forty Avenue, Wembley, HA9 8JP

    26/0812 Submitted 30 Mar 2026 0m away

    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 docs
    Small domestic

In Brent

  • 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.

    Received 30 Jul, published by the council 10 Aug 2026 Lawful development
  • 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

    Received 13 May, published by the council 25 Jul 2026 Lawful development
  • 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.

    Received 23 Apr, published by the council 25 Jul 2026 Lawful development
  • 26/1176 Refused

    47 Barn Rise, Wembley, HA9 9NH

    Certificate of lawfulness for proposed single storey outbuilding in rear garden of the dwellinghouse.

    Received 11 May, published by the council 25 Jul 2026 Lawful development
  • 26/1166 Refused

    66 Okehampton Road, London, NW10 3EP

    Certificate of lawfulness for proposed rear dormer and side dormer extension, 1x front rooflight, replacing side elevation window and door with aluminium frame windows and doors to dwellinghouse.

    Received 8 May, published by the council 25 Jul 2026 Lawful development