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Planning application

33 Cheyne Walk London NW4 3QH

Awaiting decision Barnet 25/5157/192 Proposed Lawful Development Certificate

Works: Extension Loft or dormer Windows or glazing

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

Proposal

Construction of a new flat roof following removal of an existing right hand side pitched roof (First Stage). Alterations and extensions to roof including hip to gable to both sides, 1no. rear dormer window with juliette balcony. 1no. rooflight to front roofslope and 1no. gable window (Second Stage)

As published by the council, reference 25/5157/192

Application record

Reference
25/5157/192
Type
Proposed Lawful Development Certificate
Status
Pending Consideration
Received
23 Dec 2025
Validated
7 Jan 2026
Ward
Hendon
Postcode
NW4 3QH

Site history

Applications at this address on the Barnet register

This site has had 3 applications since 2025.

  • 26/0489/HSE Awaiting decision

    33 Cheyne Walk London NW4 3QH

    Roof extension involving hip to gable to both sides, rear dormer window with juliette balcony, 1no. front facing rooflight and new side gable window

    Submitted 9 Feb 2026 Householder
  • 26/0099/S73 Awaiting decision

    33 Cheyne Walk London NW4 3QH

    Variation of condition 1 (Approved plans) of planning permission 24/4516/HSE dated 10/0/2025 for Part single, part two storey front, side and rear extension with new patio area following demolition of the existing garage and rear extension. Variation to include improve design by lowering the floor and altering existing windows, including blocking and replacing rear first-floor windows, replacing a first-floor window, and enlarging ground-floor bay windows

    Submitted 12 Jan 2026 Conditions

Timeline

Dates from the published record

  1. 23 Dec 2025

    Received by Barnet

  2. 7 Jan 2026

    Validated

    Checked as complete and ready for consideration.

  3. 10 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 4 March 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 46 days over the applications it decided in the last year.

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

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

29 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 lawful development applications in a median of 28 days. More in our guide to how long planning decisions take.

About lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 33 Cheyne Walk London NW4 3QH

    26/0099/S73 Submitted 12 Jan 2026 50 yards away

    93% historically approved · decision due ~11 Mar

    Variation of condition 1 (Approved plans) of planning permission 24/4516/HSE dated 10/0/2025 for Part single, part two storey front, side and rear extension with new patio area following demolition of the existing garage and rear extension. Variation to include improve design by lowering the floor and altering existing windows, including blocking and replacing rear first-floor windows, replacing a first-floor window, and enlarging ground-floor bay windows

    Awaiting decision Conditions Extension Demolition +1 2 docs
  • 33 Cheyne Walk London NW4 3QH

    26/0489/HSE Submitted 9 Feb 2026 50 yards away

    77% historically approved · decision due ~6 Apr

    Roof extension involving hip to gable to both sides, rear dormer window with juliette balcony, 1no. front facing rooflight and new side gable window

    Awaiting decision Householder Extension Loft or dormer +1 24 docs
    Domestic
  • 214 Hendon Way London NW4 3NE

    25/3878/CON Submitted 22 Sep 2025 150 yards away

    93% historically approved · decision due ~17 Nov

    Submission of details of condition 4 (Demolition, Construction Management and Logistics Plan) pursuant to planning permission 25/3108/HSE dated 19/09/2025

    Awaiting decision Conditions Demolition 4 docs
  • 214 Hendon Way London NW4 3NE

    26/3147/FUL Submitted 26 Aug 2026 150 yards away

    63% historically approved · decision due ~6 Nov

    Conversion into 5no. self-contained flats. Excavation of front garden to provide 4no. off-street parking spaces and provision of undercroft refuse/recycling storage with associated steps and balustrade to front entrance. Creation of stepped flower beds to front elevation. Replacement of existing first floor rear flat roof with new crown roof. Provision of private and communal amenity space and cycle storage to rear. Internal alterations to existing outbuilding

    Awaiting decision Full applications New dwelling
  • 1 Beaufort Gardens London NW4 3QN

    25/3954/192 Submitted 29 Sep 2025 150 yards away

    80% historically approved · decision due ~24 Nov

    Erection of a rear outbuilding

    Awaiting decision Lawful development 8 docs
  • 359 Hendon Way London NW4 3LY

    25/3876/FUL Submitted 22 Sep 2025 200 yards away

    63% historically approved · decision due ~17 Nov

    Conversion of the existing dwelling from HMO into 3no. self-contained flats including two storey rear extension, first floor front extension, new front entrance door, roof extension including side and rear dormer window with juliette balcony, front, side and rear rooflights and changes to fenestration. Associated amenity space, refuse and recycling and cycle storage

    Awaiting decision Full applications New dwelling Extension +2 9 docs
    Domestic

In Barnet

  • 26/2679/192 Granted

    21 Myddelton Park London N20 0JH

    Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).

    Received 20 Jul, published by the council 7 Aug 2026 Lawful development
  • 26/1362/191 Refused

    145 Cotswold Gardens London NW2 1PL

    Use as a House in Multiple Occupation (HMO) for 6 people

    Received 14 Apr, published by the council 25 Jul 2026 Lawful development
  • 26/1907/191 Granted

    8 Golders Manor Drive London NW11 9HT

    Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)

    Received 21 May, published by the council 16 Aug 2026 Lawful development
  • 26/2392/192 Refused

    6 Mostyn Road Edgware HA8 0JD

    New front hardstanding and vehicular access to provide off-street parking

    Received 23 Jun, published by the council 9 Aug 2026 Lawful development
  • 26/2059/192 Refused

    Low Ridge Rowley Lane Barnet EN5 3HS

    Erection of a rear outbuilding

    Received 3 Jun, published by the council 16 Aug 2026 Lawful development