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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 42 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.

Trade members open them from here.

Open the documents

What happens while it is decided

The process from here

This application is with Barnet for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

About prior approval applications

How this application type works

Prior approval applications arise where permitted development rights already grant the principle of the work, such as larger home extensions, changes of use to housing or agricultural buildings. The council may only consider the specific matters set out in the rules, for example transport, flooding or appearance, and in many classes the work may proceed if the council does not respond within the deadline, commonly 56 days.

More on prior approval applications in our guide

Nearby applications

Within 500 metres

  • 14 Walfield Avenue London N20 9PR

    25/4817/PNH Submitted 27 Nov 2025 53m 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 53m away

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

    Decided Lawful development Extension Loft or dormer +1 5 docs
    Small domestic

  • 1515 High Road London N20 9PJ

    25/4321/PNH Submitted 29 Oct 2025 98m 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 99m away

    Installation of 1no. 9m wooden pole

    Withdrawn 2 docs

  • 1515 High Road London N20 9PJ

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

    79% 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 103m away

    79% historically approved · decision due ~17 Dec

    Installation of 1no. 9m wooden pole

    Awaiting decision

In Barnet

  • 26/3224/PNH Awaiting decision

    Low Ridge Rowley Lane Barnet EN5 3HS

    Single storey rear extension with a proposed depth of 8.00 metres, maximum height of 3.00 metres and eaves height of 3.00 metres.

    3 Sep 2026 Prior approval
  • 26/3218/PNH Awaiting decision

    22 Highcroft Gardens London NW11 0LX

    2no. Single storey rear extensions with a proposed depth of 6.00 metres, maximum height of 3.00 metres and eaves height of 3.00 metres, and depth of 3.05 metres, maximum height of 3.00 metres and eaves height of 3.00 metres respectively, following demolition of existing roofed patio.

    2 Sep 2026 Prior approval
  • 26/3212/PNH Awaiting decision

    10 Richmond Road Barnet EN5 1SB

    Single storey rear extension with a proposed depth of 5.54 metres, maximum height of 3.50 metres and eaves height of 3.00 metres.

    2 Sep 2026 Prior approval
  • 26/3183/PNH Awaiting decision

    34 Selvage Lane London NW7 3SP

    Single storey rear extension with a proposed depth of 3.80 metres, maximum height of 3.00 metres and eaves height of 2.75 metres, following partial demolition of existing side manifestation.

    1 Sep 2026 Prior approval
  • 26/3194/PNH Awaiting decision

    74 Windsor Drive Barnet EN4 8UD

    Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 3.00 metres and eaves height of 2.60 metres, following demolition of the existing rear extension.

    31 Aug 2026 Prior approval