Planning application
33 Cheyne Walk London NW4 3QH
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
-
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
Timeline
Dates from the published record
-
23 Dec 2025
Received by Barnet
-
7 Jan 2026
Validated
Checked as complete and ready for consideration.
-
10 Aug 2026
Added to PlanIndex
-
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 recordDocuments
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 documentsWhat 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
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
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 docsDomestic -
214 Hendon Way London NW4 3NE
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
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
80% historically approved · decision due ~24 Nov
Erection of a rear outbuilding
Awaiting decision Lawful development 8 docs -
359 Hendon Way London NW4 3LY
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 docsDomestic
Other lawful development applications
In Barnet
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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).
-
26/1362/191 Refused
145 Cotswold Gardens London NW2 1PL
Use as a House in Multiple Occupation (HMO) for 6 people
-
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)
-
26/2392/192 Refused
6 Mostyn Road Edgware HA8 0JD
New front hardstanding and vehicular access to provide off-street parking
-
26/2059/192 Refused
Low Ridge Rowley Lane Barnet EN5 3HS
Erection of a rear outbuilding