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Planning application

8 Frognal Lane London NW3 7DU

Awaiting decision Camden 2025/1733/P Full applications

Works: Extension Windows or glazing Small domestic

Read from the description, not a valuation. How we read the register

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

Proposal

Erection of external balconies to the rear elevation at first floor level; a single-storey rear extension and raised timber deck terrace to the lower ground floor flat; creation of a front lightwell; installation of an additional side window and the addition of a staircase lift.

As published by the council, reference 2025/1733/P

Application record

Reference
2025/1733/P
Category
Full applications
Status
Registered
Postcode
NW3 7DU

Site history

Applications at this address on the Camden register

This site has had 13 applications since 2011: 9 approved, 3 refused.

  • 2026/2959/P Granted

    8 Frognal Lane London NW3 7DU

    Details pursuant to Condition 5 (Certificate of Structural Engineer) and Condition 8 (Foundation Details) of planning permission 2025/4041/P granted on 08/07/2026 for: Creation of a basement level beneath the approved rear extension and part of the rear property, including internal alterations and the installation of a side elevation window at basement level.

    Decided 30 Jul 2026 Full applications
  • 2026/1644/P Granted

    8 Frognal Lane London NW3 7DU

    Discharge of details for condition 5 (Certificate of Structural Engineer) of planning permission 2025/1733/P, for the creation of a front lightwell, enlargement of two side-facing ground floor windows, and the installation of a staircase lift, granted on 01/04/2026.

    Decided 13 May 2026 Full applications
  • 2025/4041/P Granted

    8 Frognal Lane London NW3 7DU

    Creation of a basement level beneath the approved rear extension and part of the rear property, including internal alterations and the installation of a side elevation window at basement level.

    Decided 8 Jul 2026 Full applications
  • 2025/0480/P Granted

    8 Frognal Lane London NW3 7DU

    Erection of external balconies on the rear elevation and first floor levels, erection of single storey rear extension and raised timber deck terrace to the lower ground floor flat (Class C3)

    Decided 10 Apr 2025 Full applications
  • 2025/0796/T Granted

    8 Frognal Lane London NW3 7DU

    FRONT GARDEN: 1 x Hawthorn (T1) - Crown reduce by 2m.

    Decided 26 Mar 2025 Trees
  • 2022/0097/P Granted

    8 Frognal Lane London NW3 7DU

    Erection of external balconies on the rear elevation at ground and first floor levels. Erection of a single storey rear extension with raised timber deck terrace to the lower ground floor flat (Class C3).

    Decided 29 Mar 2022 Full applications
  • 2019/5693/P Refused

    8 Frognal Lane London NW3 7DU

    Installation of glazed balustrade at roof level, enlargement of existing side dormer window and installation of glazed access rooflight,all in association with creating communal rooftop terrace.

    Decided 20 Oct 2020 Full applications
  • 2019/5690/P Refused

    8 Frognal Lane London NW3 7DU

    Erection of a mansard roof extension to provide a 2-bedroom flat (Class C3) with terrace at third floor level and alteration to existing side dormer.

    Decided 27 May 2020 Full applications
  • 2019/2321/P Granted

    8 Frognal Lane London NW3 7DU

    Erection of external balconies on the rear elevation at ground and first floor levels. Erection of a single storey rear extension with raised timber deck terrace to the lower ground floor flat (Class C3).

    Decided 18 Jul 2019 Full applications
  • 2018/6025/P Refused

    8 Frognal Lane London NW3 7DU

    Erection of a roof extension to create 1x2-bed flat with terrace at 3rd floor level (Class C3). Extending the existing side dormer. Installation of balconies and alterations to fenestration on the rear elevation at first & second floors.

    Decided 13 Mar 2019 Full applications

Timeline

Dates from the published record

  1. 22 Jul 2026

    Added to PlanIndex

  2. Decision

    Awaiting decision

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

    Camden took a median of 42 days over the applications it decided in the last year.

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 2026/1644/P Granted

    8 Frognal Lane London NW3 7DU

    Discharge of details for condition 5 (Certificate of Structural Engineer) of planning permission 2025/1733/P, for the creation of a front lightwell, enlargement of two side-facing ground floor windows, and the installation of a staircase lift, granted on 01/04/2026.

    Decided 13 May 2026 Full applications

What 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 full applications in a median of 56 days. More in our guide to how long planning decisions take.

About full applications

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 8 Frognal Lane London NW3 7DU

    2025/0480/P 50 yards away

    Erection of external balconies on the rear elevation and first floor levels, erection of single storey rear extension and raised timber deck terrace to the lower ground floor flat (Class C3)

    Granted Full applications Extension
    Small domestic

  • 8 Frognal Lane London NW3 7DU

    2022/0097/P 50 yards away

    Erection of external balconies on the rear elevation at ground and first floor levels. Erection of a single storey rear extension with raised timber deck terrace to the lower ground floor flat (Class C3).

    Granted Full applications Extension
    Small domestic

  • 8 Frognal Lane London NW3 7DU

    2025/4041/P Submitted 12 Sep 2025 50 yards away

    Creation of a basement level beneath the approved rear extension and part of the rear property, including internal alterations and the installation of a side elevation window at basement level.

    Granted Full applications Extension Windows or glazing 19 docs

  • 8 Frognal Lane London NW3 7DU

    2019/5690/P 50 yards away

    Erection of a mansard roof extension to provide a 2-bedroom flat (Class C3) with terrace at third floor level and alteration to existing side dormer.

    Refused Full applications Extension Loft or dormer

  • 8 Frognal Lane London NW3 7DU

    2026/1644/P Submitted 24 Apr 2026 50 yards away

    Discharge of details for condition 5 (Certificate of Structural Engineer) of planning permission 2025/1733/P, for the creation of a front lightwell, enlargement of two side-facing ground floor windows, and the installation of a staircase lift, granted on 01/04/2026.

    Granted Full applications Windows or glazing 2 docs

  • 8 Frognal Lane London NW3 7DU

    2019/5693/P 50 yards away

    Installation of glazed balustrade at roof level, enlargement of existing side dormer window and installation of glazed access rooflight,all in association with creating communal rooftop terrace.

    Refused Full applications Loft or dormer Windows or glazing

In Camden

  • 2026/3898/P Awaiting decision

    98 Marchmont Street London WC1N 1AG

    Installation of a new kitchen extraction and ventilation system to the rear of the premises, including associated external ductwork, extraction plant and ancillary equipment.

    Received 16 Sep, published by the council 17 Sep 2026 Full applications
  • 2026/2709/P Awaiting decision

    166A Camden Street London NW1 9PT

    Change of use from Use Class E to C3 Residential, demolition of existing store and office space, and erection of a three-bedroom dwellinghouse.

    Received 16 Sep, published by the council 17 Sep 2026 Full applications
  • 2026/3994/P Awaiting decision

    Euston Tower 286 Euston Road London NW1 3DP

    Details to discharge Condition 23 (LUL Subculture) of planning reference 2023/5240/P dated 26/01/26 for redevelopment of Euston Tower comprising retention of parts of the existing building (including central core, basement and foundations) and erection of a new building incorporating these retained elements, to provide a 32-storey mixed-use building providing offices and research and development floorspace (Class E(g)) and office, retail, caf?? and restaurant space (Class E) and Enterprise Space (Class E/F) at ground and first floors, and associated external terraces; public realm enhancements, including new landscaping and provision of new publicly accessible steps and ramp; short and long stay cycle storage; servicing; refuse storage; plant and other ancillary and associated work.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 2026/3993/P Awaiting decision

    Euston Tower 286 Euston Road London NW1 3DP

    Details to discharge Condition 22 (LUL Infrastructure) of planning reference 2023/5240/P dated 26/01/26 for redevelopment of Euston Tower comprising retention of parts of the existing building (including central core, basement and foundations) and erection of a new building incorporating these retained elements, to provide a 32-storey mixed-use building providing offices and research and development floorspace (Class E(g)) and office, retail, caf?? and restaurant space (Class E) and Enterprise Space (Class E/F) at ground and first floors, and associated external terraces; public realm enhancements, including new landscaping and provision of new publicly accessible steps and ramp; short and long stay cycle storage; servicing; refuse storage; plant and other ancillary and associated work.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications
  • 2026/3861/P Awaiting decision

    Beaumont Court 1-45 College Grove London NW1 0RW

    Installation of condensors and minor alterations to elevations at lower floors.

    Received 15 Sep, published by the council 17 Sep 2026 Full applications