Planning application
3 Belsize Mews London NW3 5AT
Works: Extension Loft or dormer 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
Erection of roof extension including installation of two rooflights to the side and rear roof slopes, increase in the size of the roof terrace, and associated works.
As published by the council, reference 2026/0106/P
Application record
- Reference
- 2026/0106/P
- Type
- Householder Application
- Status
- Final Decision
- Decision
- Granted
- Received
- 12 Jan 2026
- Validated
- 13 Jan 2026
- Decided
- 6 Mar 2026
- Ward
- Belsize
- Decision by
- Members Briefing
- Postcode
- NW3 5AT
Site history
Applications at this address on the Camden register
This site has had 3 applications since 2024: 2 approved, 1 refused.
-
2025/2354/P Refused
3 Belsize Mews London NW3 5AT
Erection of a dormer to rear roofslope (retrospective)
-
2024/3791/P Granted
3 Belsize Mews London NW3 5AT
Non-material amendment to planning permission ref. 2023/3257/P dated 20/06/2024 (for: Loft extension including new terrace area) namely; to alter the size and location of the approved roof lights and include an additional roof light
Timeline
Dates from the published record
-
12 Jan 2026
Received by Camden
-
13 Jan 2026
Validated
Checked as complete and ready for consideration.
-
6 Mar 2026
Decision issued: Granted
-
9 Aug 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
17 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 this grant of permission means
Camden granted permission on 6 March 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 500 metres
-
3 Belsize Mews London NW3 5AT
Non-material amendment to planning permission ref. 2023/3257/P dated 20/06/2024 (for: Loft extension including new terrace area) namely; to alter the size and location of the approved roof lights and include an additional roof light
Granted Full applications Extension Loft or dormer -
3 Belsize Mews London Camden NW3 5AT
Loft extension including new terrace area.
Granted Full applications Extension Loft or dormer -
3 Belsize Mews London NW3 5AT
Erection of a dormer to rear roofslope (retrospective)
Refused Full applications Loft or dormer -
1 Belsize Avenue London NW3 4BL
(TPO - 23H-T95) FRONT GARDEN - 1 x Mulberry - Reduce by 20% to previous pruning points.
Refused Trees -
1 Belsize Avenue London NW3 4BL
(TPO Ref: 23H) FRONT GARDEN - 1 x Mulberry - Lift lower hanging branches. Trim back small branches overhanging the road to the line of the curb. Trim back light sprouting growth on lower trunk.
Granted Trees -
Flat C 9 Belsize Avenue London NW3 4BL
Replacement of front window with French doors and installation of railings associated with provision of first floor roof terrace above existing portico structure to residential unit (Class C3).
Refused Full applications Windows or glazing
Other householder applications
In Camden
-
2026/3635/P Awaiting decision
9 Rosecroft Avenue London NW3 7QA
Proposed remodelling of the rear elevation to include ground floor raised terrace, replacement balustrades, new stairs from first floor to garden level, new windows and insertion of 2no. rooflights to rear hipped roof and 1no. rooflights to existing rear flat roof.
-
2026/2824/P Granted
5 Meadowbank London Camden NW3 3AY
Erection of a front mansard roof extension; alterations to openings on front and rear elevations including new French windows and enlarged existing windows; garage to study conversion on ground floor.
-
2026/3775/P Awaiting decision
8 Tasker Road London NW3 2YB
Demolition of existing bin store and construction of a new part one/two storey front extension, addition of new fenestrations to the north, east and south elevations, replacement of existing windows and cladding and addition of new rooflights.
-
2026/3761/P Awaiting decision
45 Ornan Road London NW3 4QD
Erection of a first floor rear extension above existing ground floor rear extension.
-
2026/3606/P Awaiting decision
29 Solent Road London NW6 1TP
BOPS & M3 - 26-00348-HRET - Retrospective application for the installation of a bicycle storage unit to the front elevation