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Planning application

25 Park Avenue London NW11 7SL

Awaiting decision Barnet 26/2656/HSE Householder Application

Works: Extension Loft or dormer Windows or glazing 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

Roof extension including hip to gable to both sides with gable windows, 3no. dormer windows to front elevation, 2no. dormer windows and 2no. rooflights to rear elevation. Alterations to existing chimneys. Replacement of existing ground and first floor windows

As published by the council, reference 26/2656/HSE

Application record

Reference
26/2656/HSE
Type
Householder Application
Status
Pending Consideration
Received
16 Jul 2026
Validated
17 Jul 2026
Ward
Childs Hill
Postcode
NW11 7SL

Site history

Applications at this address on the Barnet register

This site has had 2 applications since 2026: 1 approved, 0 refused.

  • 26/1354/192 Granted

    25 Park Avenue London NW11 7SL

    Alterations to 3no. existing chimneys and minor alterations to existing side dormer (Phase 1) Roof extensions and alterations involving 2no. side facing hip to gable extensions, 3no. front facing dormer windows, 2 no. rear facing dormer windows, new side gable windows and 2no. rear facing rooflights (Phase 2)

    Decided 11 May 2026 Lawful development

Timeline

Dates from the published record

  1. 16 Jul 2026

    Received by Barnet

  2. 17 Jul 2026

    Validated

    Checked as complete and ready for consideration.

  3. 25 Jul 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 11 September 2026, 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 44 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

MARKTX Agent, registered in Chelmsford

Active · incorporated 2017 · Chelmsford

4 applications on PlanIndex

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

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

20 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

This application is with Barnet for determination, against a statutory target of eight weeks. Over the last year Barnet decided householder applications in a median of 56 days. More in our guide to how long planning decisions take.

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 500 metres

  • 3 Park Avenue London NW11 7SL

    26/2623/FUL Submitted 14 Jul 2026 2m away

    61% historically approved · decision due ~8 Sep

    Demolition of existing dwellinghouse and construction of new two storey detached dwellinghouse with room in the roof, associated amenity space, off-street parking, refuse and cycle parking and installation of air source heat pump within a timber enclosure

    Decided Full applications Demolition 16 docs
    Domestic

  • 9 Park Avenue London NW11 7SL

    25/4912/HSE Submitted 8 Dec 2025 21m away

    Single storey rear extension with 1no. rooflight. Alterations to roof above kitchen. External level drop down with new steps. New terrace area with new garden retaining wall

    Granted Householder Extension Loft or dormer 24 docs
    Small domestic

  • 16 Park Avenue London NW11 7SJ

    25/4487/192 Submitted 11 Nov 2025 41m away

    Roof extension involving hip to gable with rear dormer window. Single storey side and rear extension insertion of 1no. rooflight, new front hardstanding to driveway and walkway with new pedestrian gate, new bin store to front (Approved under 24/3493/HSE)

    Withdrawn Lawful development Extension Loft or dormer +1 12 docs
    Small domestic

  • 25 Park Avenue London NW11 7SL

    26/1354/192 Submitted 13 Apr 2026 61m away

    Alterations to 3no. existing chimneys and minor alterations to existing side dormer (Phase 1) Roof extensions and alterations involving 2no. side facing hip to gable extensions, 3no. front facing dormer windows, 2 no. rear facing dormer windows, new side gable windows and 2no. rear facing rooflights (Phase 2)

    Granted Lawful development Extension Loft or dormer +1 23 docs

  • 31 The Park London NW11 7ST

    26/2049/HSE Submitted 2 Jun 2026 80m away

    77% historically approved · decision due ~29 Jul

    Single storey rear extension and pergola

    Awaiting decision Householder Extension 8 docs
    Small domestic

  • 23 The Park London NW11 7ST

    25/4870/HSE Submitted 4 Dec 2025 94m away

    77% historically approved · decision due ~30 Jan

    Removal of chimney stack, installation of 2no. air conditioning units on first floor rear elevation. Replacement of 2no. windows on side elevation. Erection of front boundary wall with railings and 2no. gates, fencing on side elevation

    Awaiting decision Householder Windows or glazing 7 docs
    Small domestic

In Barnet

  • 26/3422/HSE Awaiting decision

    Revelstroke 28 Totteridge Village London N20 8JN

    Construction of a swimming pool and associated hard and soft landscaping following demolition of the existing shed including new access steps. Alterations to the ground level. Replacement of an existing timber decking terrace with a paved terrace.

    18 Sep 2026 Householder
  • 26/3396/HSE Awaiting decision

    43 Dukes Avenue London N3 2DE

    Single storey rear, part two storey side extension with 1no. rooflight following the demolition of existing shed. Roof extension with rear dormer window, 1no. front, 3no. side facing rooflights and roof windows to the front and side roof slopes. Installation of solar panels to side elevation of roof

    17 Sep 2026 Householder
  • 26/3410/HSE Awaiting decision

    54 Ferney Road Barnet EN4 8LE

    Single storey rear extension with alteration to the raised terrace area including new access steps to garden

    17 Sep 2026 Householder
  • 26/3415/HSE Awaiting decision

    11 Downage London NW4 1AS

    Alterations and extensions to the roof including rear dormer window and the partial removal of the roof of the first floor rear extension, creation of a new crown roof over main roof and rear extension, 1no. front, 1no. side, 1no. rear facing rooflight and 1no. on crown roof

    17 Sep 2026 Householder
  • 26/3382/HSE Awaiting decision

    11 Layfield Crescent London NW4 3UJ

    Part single, part two storey rear extension with flat roof and 1no. skylight

    16 Sep 2026 Householder