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Planning application

25 Park Avenue London NW11 7SL

Decided Barnet 26/2656/HSE Householder

Works: Extension Loft or dormer Windows or glazing Domestic

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

Decided. The decision notice on the council portal carries the outcome in full, including any conditions.

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
Category
Householder
Status
Approved subject to conditions
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. 22 Sep 2026

    Status changed to Approved subject to conditions

    Previously Pending Consideration.

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.

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

Open the documents

After the decision

Barnet has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. 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

  • 3 Park Avenue London NW11 7SL

    26/2623/FUL Submitted 14 Jul 2026 50 yards away

    63% 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

    26/4029/S73 Submitted 6 Nov 2026 50 yards away

    78% historically approved · decision due ~1 Jan

    Variation of condition 1 (Approved plans) of planning permission reference 25/4912/HSE dated 02/02/2026 for 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. Variation to include altering size of door opening

    Awaiting decision Extension Loft or dormer
    Small domestic

  • 9 Park Avenue London NW11 7SL

    25/4912/HSE Submitted 8 Dec 2025 50 yards 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

    26/3447/192 Submitted 22 Sep 2026 50 yards away

    78% historically approved · decision due ~24 Nov

    Alterations to existing roof extension involving hip to gable extension, enlargement of existing rear dormer window, 2no. rooflights on dormer roof, 1no. front, 1no. rear facing rooflights and 1no. circular window to gable end

    Awaiting decision Extension Loft or dormer +1

  • 16 Park Avenue London NW11 7SJ

    25/4487/192 Submitted 11 Nov 2025 50 yards 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 50 yards 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

In Barnet

  • 26/3476/HSE Granted

    116 Chase Way London N14 5DH

    Single storey rear extension with 2no. rooflights. Changes to fenestration; new doors, 3no. new windows to rear elevation

    Received 24 Sep, published by the council 25 Sep 2026 Householder
  • 26/4019/HSE Awaiting decision

    38 Asmuns Hill London NW11 6ET

    Replacement of windows with vacuum-glazed windows (excluding subframes) and new french doors to rear

    6 Nov 2026 Householder
  • 26/4023/HSE Awaiting decision

    61 Bullescroft Road Edgware HA8 8RN

    Single storey front, side and rear wraparound extension incorporating porch following conversion of the existing garage, including window to replace garage door

    6 Nov 2026 Householder
  • 26/4015/HSE Awaiting decision

    6 Raeburn Close London NW11 6UG

    Alterations to the rear ground floor elevation, including replacement of the existing door and two windows with timber framed French doors and windows. Replacement of existing single glazed windows with new double glazed timber windows. Replacement of the existing rear patio doors with double glazed timber doors. Formation of a new rear patio. Addition of new bin storage at front

    Received 5 Nov, published by the council 6 Nov 2026 Householder
  • 26/4012/HSE Awaiting decision

    59 Hendon Way London NW2 2LX

    Two storey side and rear extension. New front porch

    5 Nov 2026 Householder