Planning application
57 Belsize Park London NW3 4EH
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Existing use of the property as a single planning unit for a mixed use comprising flexible long term residential accommodation (Class C3 and Sui Generis) and short term guest accommodation (Class C1).
As published by the council, reference 2026/3386/P
Application record
- Reference
- 2026/3386/P
- Type
- Certificate of Lawfulness (Existing)
- Status
- Registered
- Received
- 7 Aug 2026
- Validated
- 14 Aug 2026
- Ward
- Belsize
- Postcode
- NW3 4EH
Site history
Applications at this address on the Camden register
This site has had 6 applications since 2011: 2 approved, 2 refused.
-
2015/6492/P Granted
57 Belsize Park London NW3 4EH
Use as 23 self contained flats at basement, upper ground and mezzanine, first, second and third floor levels.
-
2014/3724/P Granted
57 Belsize Park London NW3 4EH
Replacing existing door opening on the front elevation of light-well with new timber sash window, rendering existing brickwall and removal of coping stones around lightwell wall, erection of new raised patio area to front elevation to create new soft landscaping and flower bed to enclose lightwell, rendering of front brick boundary wall and placement of coping stones and pier stones on-top.
-
2013/3192/P Refused
57 Belsize Park London NW3 4EH
Erection of an enclosed storage area with green roof in front lightwell of residential building.
-
2011/5615/P Refused
57 Belsize Park London NW3 4EH
Installation of timber door at front basement level and erection of rendered brick wall within lightwell (Retrospective).
-
2011/4391/P Withdrawn
57 Belsize Park London NW3 4EH
Retrospective application to retain timber door accessing front lightwell and brick wall enclosing lightwell for existing HMO premises (Class C4).
Timeline
Dates from the published record
-
7 Aug 2026
Received by Camden
-
14 Aug 2026
Validated
Checked as complete and ready for consideration.
-
22 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 9 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Camden took a median of 42 days over the applications it decided in the last year.
Documents
Plans, drawings, consultee responses and the officer's report
10 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 documentsWhat happens while it is decided
This application is with Camden for determination, against a statutory target of eight weeks. Over the last year Camden decided lawful development applications in a median of 54 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 500 metres
-
57 Belsize Park London NW3 4EH
Installation of timber door at front basement level and erection of rendered brick wall within lightwell (Retrospective).
Refused Full applications -
57 Belsize Park London NW3 4EH
Use as 23 self contained flats at basement, upper ground and mezzanine, first, second and third floor levels.
Granted Full applications New dwelling -
57 Belsize Park London NW3 4EH
Erection of an enclosed storage area with green roof in front lightwell of residential building.
Refused Full applications -
57 Belsize Park London NW3 4EH
Retrospective application to retain timber door accessing front lightwell and brick wall enclosing lightwell for existing HMO premises (Class C4).
Withdrawn Full applications -
57 Belsize Park London Camden NW3 4EH
Conversion of 23 self-contained residential units to 19. Erection of 3x replacement larger dormers and 1 rooflight following demolition of existing.
Granted Full applications Loft or dormer Demolition -
Garden Flat 58 Belsize Park London NW3 4EH
REAR GARDEN: 1 x Poplar T1 - remove tree and roots.
Granted Trees
Other lawful development applications
In Camden
-
2026/3669/P Awaiting decision
64 Westcroft Close London NW2 2RR
Demolition of existing conservatory and erection of a single storey rear extension.
-
2026/3405/P Granted
Flat A and Flat B 23 Ravenshaw Street London NW6 1NP
Amalgamation of Flat 23A and Flat 23B to form one dwellinghouse (Use Class C3), including, insofar as required, the change of use of Flat 23B from a small house in multiple occupation (Use Class C4) to a dwellinghouse (Use Class C3), together with removal of an internal blockwork partition wall.
-
2026/3591/P Awaiting decision
22 Ulysses Road London NW6 1EE
Erection of an outbuilding within rear garden.
-
2026/3566/P Awaiting decision
41 & 43 King Henry's Road London NW3 3QR
Subdivision and use of the buildings as two separate residential dwellings.
-
2026/3527/P Awaiting decision
303 Flat Ground Floor Rear Studio West End Lane London Camden NW6 1RD
Use of ground floor studio flat as single dwelling unit (Class C3)