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Planning application

9 Park Avenue London NW11 7SL

Granted Barnet 25/4912/HSE Householder Application

Works: Extension Loft or dormer Small domestic

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

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

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

As published by the council, reference 25/4912/HSE

Application record

Reference
25/4912/HSE
Type
Householder Application
Status
Approved subject to conditions
Decision
Granted As published: Approve subject to conditions
Received
8 Dec 2025
Validated
8 Dec 2025
Decided
2 Feb 2026
Ward
Childs Hill
Decision by
Delegated Decision
Postcode
NW11 7SL

Timeline

Dates from the published record

  1. 8 Dec 2025

    Received by Barnet

  2. 2 Feb 2026

    Decision issued: Approve subject to conditions

  3. 10 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Simon Miller Architects Ltd Agent, an architecture practice registered in London

Active · incorporated 2005 · London

30 applications on PlanIndex · across 4 councils · 92% granted

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Documents

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

24 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 grant of permission means

Barnet granted permission on 2 February 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. 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
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  • 25 Park Avenue London NW11 7SL

    26/2656/HSE Submitted 16 Jul 2026 50 yards away

    77% historically approved · decision due ~11 Sep

    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

    Decided Householder Extension Loft or dormer +1 20 docs
    Domestic

  • 16 Park Avenue London NW11 7SJ

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

    79% 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

  • 31 The Park London NW11 7ST

    26/2049/HSE Submitted 2 Jun 2026 100 yards away

    77% historically approved · decision due ~29 Jul

    Single storey rear extension and pergola

    Awaiting decision Householder Extension 8 docs
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  • 25 Park Avenue London NW11 7SL

    26/1354/192 Submitted 13 Apr 2026 100 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

  • 26/3827/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
  • 26/3815/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
  • 26/3799/HSE Awaiting decision

    1 Queens Avenue London N3 2NN

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

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