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Planning application

21 Walfield Avenue London N20 9PS

Awaiting decision Barnet 25/3858/PNH Prior Notification (Householder)

Works: Extension Small domestic

Read from the description, not a valuation. How we read the register

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Single storey rear extension with a proposed depth of 5.00m, maximum height of 3.70m and eaves height of 3.00m.

As published by the council, reference 25/3858/PNH

Application record

Reference
25/3858/PNH
Type
Prior Notification (Householder)
Status
Pending Consideration
Received
18 Sep 2025
Validated
19 Sep 2025
Ward
Barnet Vale
Postcode
N20 9PS

Timeline

Dates from the published record

  1. 18 Sep 2025

    Received by Barnet

  2. 19 Sep 2025

    Validated

    Checked as complete and ready for consideration.

  3. 10 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 14 November 2025, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

    Barnet took a median of 46 days over the applications it decided in the last year.

Documents

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

3 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.

Watch members (£5 a month) open the document list from here.

Open the documents

What happens while it is decided

This application is with Barnet for determination, against a statutory target of eight weeks. Over the last year Barnet decided prior approval applications in a median of 36 days. More in our guide to how long planning decisions take.

About prior approval applications

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 14 Walfield Avenue London N20 9PR

    25/4817/PNH Submitted 27 Nov 2025 50 yards away

    Ground floor single storey rear extension projecting 4m from existing rear wall and 3m in height. Demolition of existing garage.

    Granted Prior approval Extension Demolition 6 docs
    Small domestic

  • 14 Walfield Avenue London N20 9PR

    25/4815/192 Submitted 27 Nov 2025 50 yards away

    Roof extension involving hip to gable, rear dormer window and 3no. front facing rooflights. New front porch. Erection of a rear outbuilding.

    Granted Lawful development Extension Loft or dormer +1 5 docs
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  • 1515 High Road London N20 9PJ

    25/4321/PNH Submitted 29 Oct 2025 100 yards away

    Single storey L-shaped rear extension with proposed depths of 3.0 metres and 4.85 metres, maximum height of 3.0 metres and eaves height of 2.90 metres, following demolition of existing conservatory and garage.

    Granted Prior approval Extension Demolition 16 docs
    Small domestic

  • Outside 47 Walfield Avenue London N20 9PS

    25/4407/LIC Submitted 3 Nov 2025 100 yards away

    Installation of 1no. 9m wooden pole

    Withdrawn 2 docs

  • 1515 High Road London N20 9PJ

    25/4919/192 Submitted 8 Dec 2025 100 yards away

    80% historically approved · decision due ~4 Feb

    Single storey rear extension with 1no. rooflight and new patio area following demolition of existing conservatory and garage

    Awaiting decision Lawful development Extension Loft or dormer +1 14 docs
    Small domestic

  • Outside 47 Walfield Avenue London N20 9PS

    25/4234/LIC Submitted 22 Oct 2025 100 yards away

    79% historically approved · decision due ~17 Dec

    Installation of 1no. 9m wooden pole

    Awaiting decision

In Barnet

  • 26/3835/PNH Awaiting decision

    3 Devonshire Crescent London NW7 1DN

    Single storey rear extension with a proposed depth of 5.00 metres, maximum height of 3.48 metres and eaves height of 3.00 metres. Following demolition of existing rear outrigger.

    22 Oct 2026 Prior approval
  • 26/3832/PNH Awaiting decision

    48 Alverstone Avenue Barnet EN4 8EB

    Single storey rear extension with a proposed depth of 4.5 metres, maximum height of 3.15 metres and eaves height of 3 metres following demolition of existing rear extension.

    22 Oct 2026 Prior approval
  • 26/3823/PNH Awaiting decision

    7 Southbourne Crescent London NW4 2LB

    Single storey rear extension added to an existing extension with the total extension measuring 6.00 metres deep, with a maximum height of 3.00 metres and an eaves height of 3.00 metres.

    21 Oct 2026 Prior approval
  • 26/3809/PND Awaiting decision

    10 Clifford Road Barnet EN5 5PG

    Demolition of existing garage and attached pitched-roof structure

    21 Oct 2026 Prior approval
  • 26/3819/PNH Awaiting decision

    78 Russell Lane London N20 0AP

    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.

    Received 20 Oct, published by the council 22 Oct 2026 Prior approval