Skip to content
PlanIndex Get alerts
Menu

Planning application

15 Chalcot Square London NW1 8YA

Awaiting decision Camden 2025/2225/P Full applications

Works: Extension 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

Single storey rear extension at lower ground floor

As published by the council, reference 2025/2225/P

Application record

Reference
2025/2225/P
Category
Full applications
Status
Registered
Postcode
NW1 8YA

Site history

Applications at this address on the Camden register

This site has had 16 applications since 2016: 10 approved, 0 refused.

  • 2026/2298/L Awaiting decision

    15 Chalcot Square London NW1 8YA

    Approval of Details for part condition 4(E) (Slates and ridge tiles) of Listed Building Consent; 2025/2386/L "Internal and external alterations including reconfiguration of internal spaces; restoration works across all floors; replacement of rear terrace, balustrade and external staircase; installation of acoustic enclosure for air source heat pump in rear garden; replacement of windows and rooflights; roof repairs; and installation of underfloor heating ", granted on 02/09/2025

    Submitted 5 Jun 2026 Heritage and listed buildings
  • 2026/2298/P Awaiting decision

    15 Chalcot Square London NW1 8YA

    Approval of Details (Condition 4E) of Listed Building Consent; 2025/2386/L "Internal and external alterations including reconfiguration of internal spaces; restoration works across all floors; replacement of rear terrace, balustrade and external staircase; installation of acoustic enclosure for air source heat pump in rear garden; replacement of windows and rooflights; roof repairs; and installation of underfloor heating ", granted on 02/09/2025

    Submitted 5 Jun 2026 Reserved matters
  • 2026/2111/L Awaiting decision

    15 Chalcot Square London NW1 8YA

    Approval of Details Pursuant to Condition 4 (Detailed Drawings and Materials) of Listed Building Consent Ref: 2025/2386/L dated 02/09/2025. "Proposal: Internal and external alterations including reconfiguration of internal spaces; restoration works across all floors; replacement of rear terrace, balustrade and external staircase; installation of acoustic enclosure for air source heat pump in rear garden; replacement of windows and rooflights; roof repairs; and installation of underfloor heating."

    Submitted 22 May 2026 Heritage and listed buildings
  • 2026/2111/P Awaiting decision

    15 Chalcot Square London NW1 8YA

    Approval of Details Pursuant to Condition 4 (Detailed Drawings and Materials) of Listed Building Consent Ref: 2025/2386/L dated 02/09/2025. "Proposal: Internal and external alterations including reconfiguration of internal spaces; restoration works across all floors; replacement of rear terrace, balustrade and external staircase; installation of acoustic enclosure for air source heat pump in rear garden; replacement of windows and rooflights; roof repairs; and installation of underfloor heating."

    Submitted 22 May 2026 Full applications
  • 2026/2034/L Granted

    15 Chalcot Square London NW1 8YA

    Details pursuant to Condition 4(a) (joinery) and 4(b) (terrace railings and external staircase) of Listed Building Consent 2025/2372/L, dated 29/09/2025, for the "Single storey rear extension and associated internal alterations. Enlargement of upper ground floor terrace."

    Decided 4 Sep 2026 Heritage and listed buildings
  • 2026/2033/P Granted

    15 Chalcot Square London NW1 8YA

    Details pursuant to Condition 4 (Tree protection details) of planning permission 2025/2225/P granted on 25/09/2025 "Single storey rear extension at lower ground floor and enlargement of upper ground floor terrace"

    Decided 23 Jul 2026 Full applications
  • 2026/2034/P Awaiting decision

    15 Chalcot Square London NW1 8YA

    Details pursuant to part-discharge Condition 4 of Listed Building Consent 2025/2372/L, granted 29.09.2025, for a "Single storey rear extension and associated internal alterations. Enlargement of upper ground floor terrace." Namely to discharge Condition 4 a) Details including elevations and sections at 1:10 of all new joinery including internal and external doors; and, b) Elevation and section drawings at 1:10 of the new terrace railings and external staircase.

    Submitted 19 May 2026 Full applications
  • 2026/0554/P Granted

    15 Chalcot Square London NW1 8YA

    Details of Condition 8 (Materials of ASHP enclosure) of planning permission 2025/2117/P, granted on 02/09/2025 for: Replacement of the rear terrace, railings, external staircase, and internal alterations; the replacement of existing windows and doors throughout; replacement of existing rooflights to the rear roof; and an acoustic enclosure in the rear garden to house an air source heat pump (ASHP).

    Decided 11 Feb 2026 Full applications
  • 2025/5156/P Granted

    15 Chalcot Square London NW1 8YA

    Details of condition 4 (Tree Protection Plan) of planning permission 2025/2225/P dated 25/09/2025 for 'Single storey rear extension at lower ground floor and enlargement of upper ground floor terrace'

    Decided 13 Jan 2026 Full applications
  • 2025/5106/P Granted

    15 Chalcot Square London NW1 8YA

    Details of Conditions 6 (ASHP Living Roof) and 8(a) (Materials of ASHP enclosure) of planning permission 2025/2117/P, granted on 02/09/2025 for: Replacement of the rear terrace, railings, external staircase, and internal alterations; the replacement of existing windows and doors throughout; replacement of existing rooflights to the rear roof; and an acoustic enclosure in the rear garden to house an air source heat pump (ASHP).

    Decided 22 Jan 2026 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

2 later applications on the register refer to this one:

  • 2026/2033/P Granted

    15 Chalcot Square London NW1 8YA

    Details pursuant to Condition 4 (Tree protection details) of planning permission 2025/2225/P granted on 25/09/2025 "Single storey rear extension at lower ground floor and enlargement of upper ground floor terrace"

    Decided 23 Jul 2026 Full applications
  • 2025/5156/P Granted

    15 Chalcot Square London NW1 8YA

    Details of condition 4 (Tree Protection Plan) of planning permission 2025/2225/P dated 25/09/2025 for 'Single storey rear extension at lower ground floor and enlargement of upper ground floor terrace'

    Decided 13 Jan 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 500 metres

  • 15 Chalcot Square London NW1 8YA

    2026/2298/L Submitted 5 Jun 2026 0m away

    96% historically approved · decision due ~6 Aug

    Approval of Details for part condition 4(E) (Slates and ridge tiles) of Listed Building Consent; 2025/2386/L "Internal and external alterations including reconfiguration of internal spaces; restoration works across all floors; replacement of rear terrace, balustrade and external staircase; installation of acoustic enclosure for air source heat pump in rear garden; replacement of windows and rooflights; roof repairs; and installation of underfloor heating ", granted on 02/09/2025

    Awaiting decision Heritage and listed buildings Loft or dormer Windows or glazing 9 docs

  • 15 Chalcot Square London NW1 8YA

    2026/2298/P Submitted 5 Jun 2026 0m away

    94% historically approved · decision due ~6 Aug

    Approval of Details (Condition 4E) of Listed Building Consent; 2025/2386/L "Internal and external alterations including reconfiguration of internal spaces; restoration works across all floors; replacement of rear terrace, balustrade and external staircase; installation of acoustic enclosure for air source heat pump in rear garden; replacement of windows and rooflights; roof repairs; and installation of underfloor heating ", granted on 02/09/2025

    Awaiting decision Reserved matters Loft or dormer Windows or glazing 9 docs

  • 15 Chalcot Square London NW1 8YA

    25-00150-HAPP 0m away

    Replacement of the rear terrace, railings, external staircase, and internal alterations; the replacement of existing windows and doors throughout; replacement of existing rooflights to the rear roof; and an acoustic enclosure in the rear garden to house an air source heat pump (ASHP).

    Granted Householder Loft or dormer Windows or glazing
    Domestic

  • 15 Chalcot Square London Camden NW1 8YA

    2025/2372/L 0m away

    96% historically approved

    Single storey rear extension and associated internal

    Awaiting decision Heritage and listed buildings Extension
    Small domestic

  • 15 Chalcot Square London NW1 8YA

    2017/4550/T 0m away

    (TPO REF C67-T5) REAR GARDEN: 1 x Lime - Reduce crown by 30%, by approximately 3m over the crown, cut back limb extending ove rear gardens so it is within the crown of the tree and remove any dead or broken limbs

    Granted Trees

  • 15 Chalcot Square London NW1 8YA

    2025/5106/P Submitted 11 Nov 2025 0m away

    Details of Conditions 6 (ASHP Living Roof) and 8(a) (Materials of ASHP enclosure) of planning permission 2025/2117/P, granted on 02/09/2025 for: Replacement of the rear terrace, railings, external staircase, and internal alterations; the replacement of existing windows and doors throughout; replacement of existing rooflights to the rear roof; and an acoustic enclosure in the rear garden to house an air source heat pump (ASHP).

    Granted Full applications Loft or dormer Windows or glazing 6 docs

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.

    16 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.

    16 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.

    15 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.

    15 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.

    15 Sep 2026 Full applications