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Planning application

5 Ashbourne Avenue London N20 0AL

Refused Barnet 26/0678/HSE Householder Application

Works: Extension 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

Single storey rear extension with 1no. roof lantern, raised decking area with associated access steps and privacy screening. New front porch with pitched roof. New front hardstanding and vehicular access to provide off-street parking

As published by the council, reference 26/0678/HSE

Application record

Reference
26/0678/HSE
Type
Householder Application
Status
Refused
Decision
Refused As published: Refuse
Received
20 Feb 2026
Validated
23 Feb 2026
Decided
20 Apr 2026
Ward
Brunswick Park
Decision by
Delegated Decision
Postcode
N20 0AL

Site history

Applications at this address on the Barnet register

This site has had 2 applications since 2026: 1 approved, 1 refused.

  • 26/1618/HSE Granted

    5 Ashbourne Avenue London N20 0AL

    Single storey rear extension with 1no. roof lantern, raised decking area with associated access steps and privacy screening. New front porch with pitched roof. New front hardstanding and vehicular access to provide off-street parking

    Decided 23 Jun 2026 Householder

Timeline

Dates from the published record

  1. 20 Feb 2026

    Received by Barnet

  2. 23 Feb 2026

    Validated

    Checked as complete and ready for consideration.

  3. 20 Apr 2026

    Decision issued: Refuse

  4. 10 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Generative Design Partnership Ltd Agent, a design practice registered in London

Active · incorporated 2005 · London

51 applications on PlanIndex · across 13 councils · 70% granted

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Documents

Plans, drawings, consultee responses and the officer's report

7 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

Barnet 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 householder applications

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 7 Ashbourne Avenue London N20 0AL

    25/3730/192 Submitted 10 Sep 2025 50 yards away

    80% historically approved · decision due ~5 Nov

    Roof extension involving hip to gable, rear dormer window with juliette balcony and 2no. front facing rooflights

    Awaiting decision Lawful development Extension Loft or dormer +1 21 docs

  • 7 Ashbourne Avenue London N20 0AL

    25/3862/192 Submitted 19 Sep 2025 50 yards away

    80% historically approved · decision due ~14 Nov

    Roof extension involving hip to gable, rear dormer window with juliette balcony and 2no. front facing rooflights

    Awaiting decision Lawful development Extension Loft or dormer +1 21 docs

  • 5 Ashbourne Avenue London N20 0AL

    26/1618/HSE Submitted 29 Apr 2026 50 yards away

    Single storey rear extension with 1no. roof lantern, raised decking area with associated access steps and privacy screening. New front porch with pitched roof. New front hardstanding and vehicular access to provide off-street parking

    Granted Householder Extension Windows or glazing 6 docs
    Small domestic

  • 78 Russell Lane London N20 0AP

    26/3819/PNH Submitted 20 Oct 2026 50 yards away

    56% historically approved · decision due ~17 Dec

    2no. Single storey rear extensions with a proposed depth of 7.00 metres, maximum height of 3.60 metres and eaves height of 3.00 metres. Following demolition of the existing side/rear outrigger.

    Awaiting decision Prior approval Extension Demolition
    Small domestic

  • 78 Russell Lane London N20 0AP

    26/3133/PNH Submitted 25 Aug 2026 50 yards away

    56% historically approved · decision due ~20 Oct

    2no. Single storey rear extension with a proposed depth of 7.00 metres, maximum height of 3.60 metres and eaves height of 3.00 metres. Following demolition of the existing side/rear outrigger. (Amended Description)

    Decided Prior approval Extension Demolition
    Small domestic

  • 80 Russell Lane London N20 0AP

    25/4596/HSE Submitted 18 Nov 2025 50 yards away

    77% historically approved · decision due ~22 Jan

    Single storey side/rear extension with 1no. roof lantern following the partial demolition of existing garage. Roof extension involving a side dormer window. Erection of rear outbuilding following the demolition of existing (Amended Description)

    Awaiting decision Householder Extension Loft or dormer +2 7 docs
    Small domestic

In Barnet

  • 26/3827/HSE Awaiting decision

    43 Hermitage Lane London NW2 2HE

    Single storey rear extension with 3no. rooflights following demolition of the existing conservatory. Replacement front bay window and entrance porch. First floor rear juliette balcony. Changes to fenestration including new window openings and enlarged front rooflight

    22 Oct 2026 Householder
  • 26/3833/HSE Awaiting decision

    47 Holne Chase London N2 0QG

    Single storey rear extension. Replacement of single glazed windows with double glazing. Alterations to side/rear fenestration. Alterations and replacement of existing rear dormer window addition of 2no. side dormer windows and 3no. rooflights. Installation of cameras and wall lights. Replacement of the front entrance and garage doors, installation of timber side garden gates

    22 Oct 2026 Householder
  • 26/3815/HSE Awaiting decision

    17 Hurstwood Road London NW11 0AS

    Single storey rear extension

    21 Oct 2026 Householder
  • 26/3800/HSE Awaiting decision

    29 Monks Avenue Barnet EN5 1BZ

    Single storey side and rear infill extension including new front porch following demolition of the side/rear storage.

    Received 20 Oct, published by the council 21 Oct 2026 Householder
  • 26/3791/HSE Awaiting decision

    149 Montrose Avenue Edgware HA8 0DZ

    New front hardstanding and vechicular access to provide off-street parking

    Received 20 Oct, published by the council 21 Oct 2026 Householder