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Planning application

12 Rosslyn Mews London NW3 1NN

Granted Camden 2023/4434/P Householder Application

Works: Loft or dormer Windows or glazing 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

Replacement of existing external spiral stair on 3rd floor with new enclosed staircase leading to existing roof terrace and replacement of all external windows with double glazed sash windows to match existing with addition of roof lights and associated works.

As published by the council, reference 2023/4434/P

Application record

Reference
2023/4434/P
Type
Householder Application
Status
Final Decision
Decision
Granted
Received
17 Oct 2023
Validated
1 Nov 2023
Decided
22 Dec 2023
Ward
Hampstead Town
Decision by
Delegated
Postcode
NW3 1NN

Timeline

Dates from the published record

  1. 17 Oct 2023

    Received by Camden

  2. 1 Nov 2023

    Validated

    Checked as complete and ready for consideration.

  3. 22 Dec 2023

    Decision issued: Granted

  4. 22 Jul 2026

    Added to PlanIndex

Documents

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

16 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 documents

What this grant of permission means

Camden granted permission on 22 December 2023, 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

  • 5 Rosslyn Mews London NW3 1NN

    2016/1454/P 0m away

    Variation of Condition 4 (approved plans) of planning permission 2014/7873/P dated 22/07/2015 (for Alterations at roof level including the creation of a terrace and amendments to the elevations of the building); changes include the omission of the roof stair enclosure, alterations to the oriel bay window and other associated internal and external modifications to the building including changes to fenestration.

    Granted Full applications Windows or glazing

  • 9A Rosslyn Mews London NW3 1NN

    2010/1906/A 0m away

    Retention of 1 x internally illuminated box sign below existing fascia sign (sign 1) on street frontage and 1 x internally illuminated projecting sign at entrance to beauty parlour (sign 2).

    Split decision

  • 12 Rosslyn Mews London Camden NW3 1NN

    2022/3765/P 0m away

    Raising of front and rear mansard roof slopes to enclose a roof terrace with 1.8m louvres on front, rear and sides. Removal of external spiral staircase on 3rd floor rear balcony and small extension on 3rd floor at rear to provide internal access to roof terrace. Provision of replacement windows on front elevation (1st, 2nd and 3rd floor), window alterations to first floor rear extension and new front door on ground floor at rear.

    Refused Full applications Extension Loft or dormer +1

  • 5 Rosslyn Mews London NW3 1NN

    2014/7873/P 0m away

    Alterations at roof level to include a raised parapet, external stair enclosure, replacement rooflight and the creation of a terrace with screening. Amendments to the elevations of the building to make good with white render, removal and relocation of windows, removal of the slate cladding on the rear and associated works.

    Granted Full applications Loft or dormer Windows or glazing

  • 10 Rosslyn Hill London NW3 1NN

    2010/4543/P 0m away

    Change of use from two self-contained residential units into a single dwelling house (Class C3) and associated alterations to rear elevation lower ground floor bay window.

    Granted Full applications Windows or glazing
    Domestic

  • Ground Floor Premises 5/6 Rosslyn Mews London NW3 1NN

    2013/5949/P 0m away

    Change of use of ground floor from office (Class B1a) to provide additional residential accommodation for an existing self-contained unit at first and second floor levels (Class C3).

    Granted Full 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.

    4 Sep 2026 Householder
  • 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.

    6 Jul 2026 Householder
  • 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.

    2 Sep 2026 Householder
  • 2026/3761/P Awaiting decision

    45 Ornan Road London NW3 4QD

    Erection of a first floor rear extension above existing ground floor rear extension.

    2 Sep 2026 Householder
  • 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

    2 Sep 2026 Householder