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Planning application

15 Chalcot Square London NW1 8YA

Granted Camden 2025/5156/P Approval of Details

Works: Extension Trees Small domestic

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

Relates to 2025/2225/P

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

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'

As published by the council, reference 2025/5156/P

Application record

Reference
2025/5156/P
Type
Approval of Details
Status
Final Decision
Decision
Granted
Received
13 Nov 2025
Validated
2 Dec 2025
Decided
13 Jan 2026
Ward
Primrose Hill
Decision by
Delegated
Postcode
NW1 8YA

Site history

Applications at this address on the Camden register

This site has had 16 applications since 2016: 11 approved, 0 refused.

  • 2026/2298/L Granted

    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

    Decided 23 Sep 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 parts (a), (b), (c) and (f) (joinery, kitchen joinery, kitchen wall opening, terrace railings and external staircase) of Listed Building Consent Ref: 2025/2386/L dated 02/09/2025. "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
  • 2025/5106/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
  • 25-00150-HAPP Granted

    15 Chalcot Square London NW1 8YA

    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 2 Sep 2025 Householder

Timeline

Dates from the published record

  1. 13 Nov 2025

    Received by Camden

  2. 2 Dec 2025

    Validated

    Checked as complete and ready for consideration.

  3. 13 Jan 2026

    Decision issued: Granted

  4. 9 Aug 2026

    Added to PlanIndex

Cases linked to this one on the register

  • 2025/2225/P Awaiting decision

    15 Chalcot Square London NW1 8YA

    Single storey rear extension at lower ground floor

    Full applications

Documents

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

3 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.

Watch members (£5 a month) open the document list from here.

Open the documents

What this grant of permission means

Camden granted permission on 13 January 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 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

  • 15 Chalcot Square London NW1 8YA

    2026/2298/L Submitted 5 Jun 2026 50 yards away

    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

    Granted Heritage and listed buildings Loft or dormer Windows or glazing 10 docs
  • 15 Chalcot Square London NW1 8YA

    2026/2298/P Submitted 5 Jun 2026 50 yards 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 50 yards 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 50 yards 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 50 yards 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 50 yards 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

  • 2026/0990/P Refused

    1 Bleeding Heart Yard & 19 Greville Street London EC1N 8SJ

    Change of use from office space and restaurant use (Class E) and members club (Sui Generis) to affordable workspace and restaurant use (Class E) and 1 x residential unit on the third and fourth floors (Class C3). Erection of a two-storey roof extension across 19 Greville Street and 1 Bleeding Heart Yard, including alterations at second-floor level to the interior courtyard elevation, ground-floor fenestration changes, and a roof terrace for the associated residential unit.

    Received 26 Mar, published by the council 24 Jul 2026 Full applications
  • 2026/3044/P Granted

    London Irish Centre 50-52 Camden Square London NW1 9XB

    Details to discharge Condition 25 Part A (Air Quality Monitoring) of planning permission ref. 2020/1481/P dated 17/05/24 for 'Redevelopment of site to provide new and reconfigured community centre and ancillary residential accommodation (Class D1/ D2) involving alterations to retained buildings at No's. 50, 51 and 52 Camden Square including replacement of two storey 'link' building; demolition of Murray Street and Murray Mews buildings and replacement with part-three / part-four storey building (plus basement level) with second and third floor terraces and new entrance; associated landscaping and cycle parking'.

    Received 20 Jul, published by the council 2 Aug 2026 Full applications
  • 2026/4338/P Awaiting decision

    32 Willoughby Road London NW3 1RU

    Details to discharge condition 6 (tree protection methods) of planning permission 2025/4186/P granted 13/11/2025 for 'Demolition of existing two storey outrigger and replacement with part two-storey, part single storey rear extension, loft conversion with dormer and roof light to main roof at rear, new windows to flanking wall, replacement of existing windows and installation of a gate and fence to side'.

    Received 5 Oct, published by the council 9 Oct 2026 Full applications
  • 2026/4141/P Awaiting decision

    24 Endell Street London WC2H 9HQ

    Relocation of three air conditioning condenser units to first floor roof, construction of an acoustic enclosure and other associated works.

    Received 5 Oct, published by the council 9 Oct 2026 Full applications
  • 2026/3907/P Awaiting decision

    Flat 1 16 Lyndhurst Road London NW3 5NL

    External renovations to the front of the property, including works to the entry porch, steps, replacment front door, installation of metal railings to boundary wall and paving to front garden and erection of a glass roof to the side passage to create a bike shelter.

    Received 5 Oct, published by the council 9 Oct 2026 Full applications