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Planning application

20 Chalcot Square London NW1 8YA

Granted Camden 2018/6156/L Heritage and listed buildings

Works: Extension Windows or glazing Small 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

Internal and external alterations for the erection of a single storey infill extension at basement level, installation of metal staircase with balustrade for a roof terrace above; fenestration and façade treatment to the front, rear and rear elevation and internal alterations throughout.

As published by the council, reference 2018/6156/L

Application record

Reference
2018/6156/L
Category
Heritage and listed buildings
Status
Final Decision
Decision
Granted
Decided
3 May 2019
Postcode
NW1 8YA

Site history

Applications at this address on the Camden register

This site has had 8 applications since 2019: 7 approved, 0 refused.

  • 2020/1259/P Granted

    20 Chalcot Square London NW1 8YA

    Approval of details required by Condition 4 of 2018/6139/P relating to details of the proposed living roof.

    Decided 12 Oct 2020 Full applications
  • 2020/1653/L Granted

    20 Chalcot Square London NW1 8YA

    Details of condition 3G (external staircase) of listed building consent 2018/6156/L dated 03/05/2019 for internal and external alterations for the erection of a single storey infill extension at basement level, installation of metal staircase with balustrade for a roof terrace above; fenestration and façade treatment to the front, rear and rear elevation and internal alterations throughout.

    Decided 26 May 2020 Heritage and listed buildings
  • 2020/1085/L Granted

    20 Chalcot Square London NW1 8YA

    Approval of details for condition 3 parts b), c) e), f) h) and i) of application ref 2018/6156/L.

    Decided 7 Apr 2020 Heritage and listed buildings
  • 2020/0247/L Granted

    20 Chalcot Square London NW1 8YA

    Approval of Condition 4 (new timber doors) of planning approval ref 2019/3269/L.granted on 16/10/2019 for various internal alterations and an infill basement extension.

    Decided 10 Mar 2020 Heritage and listed buildings
  • 2019/2644/P Withdrawn

    20 Chalcot Square London NW1 8YA

    Erection of an infill extension to the void space between the first and second floors.

    Submitted 21 May 2019 Full applications
  • 2019/3269/L Granted

    20 Chalcot Square London NW1 8YA

    Internal alterations at first floor level for the formation of a door opening and installation double door between the kitchen and the study associated with listed building consent (2018/6156/L) dated 02/05/2019 for: Internal and external alterations for the erection of a single storey infill extension at basement level, installation of metal staircase with balustrade for a roof terrace above; fenestration and facade treatment to the front, rear and rear elevation and internal alterations throughout.

    Decided 16 Oct 2019 Heritage and listed buildings
  • 2018/6139/P Granted

    20 Chalcot Square London NW1 8YA

    Erection of a single storey extension to the rear elevation at basement, installation of metal staircase and balustrade for a roof terrace at ground floor level, alterations to the front, rear and side facade/fenestration and conversion of the existing basement flat into a dwellinghouse.

    Decided 3 May 2019 Full applications

Timeline

Dates from the published record

  1. 3 May 2019

    Decision issued: Granted

  2. 22 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

3 later applications on the register refer to this one:

  • 2020/1653/L Granted

    20 Chalcot Square London NW1 8YA

    Details of condition 3G (external staircase) of listed building consent 2018/6156/L dated 03/05/2019 for internal and external alterations for the erection of a single storey infill extension at basement level, installation of metal staircase with balustrade for a roof terrace above; fenestration and façade treatment to the front, rear and rear elevation and internal alterations throughout.

    Decided 26 May 2020 Heritage and listed buildings
  • 2020/1085/L Granted

    20 Chalcot Square London NW1 8YA

    Approval of details for condition 3 parts b), c) e), f) h) and i) of application ref 2018/6156/L.

    Decided 7 Apr 2020 Heritage and listed buildings
  • 2019/3269/L Granted

    20 Chalcot Square London NW1 8YA

    Internal alterations at first floor level for the formation of a door opening and installation double door between the kitchen and the study associated with listed building consent (2018/6156/L) dated 02/05/2019 for: Internal and external alterations for the erection of a single storey infill extension at basement level, installation of metal staircase with balustrade for a roof terrace above; fenestration and facade treatment to the front, rear and rear elevation and internal alterations throughout.

    Decided 16 Oct 2019 Heritage and listed buildings

What this grant of permission means

Camden granted permission on 3 May 2019, 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 heritage and listed building applications

Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.

Nearby applications

Within 500 metres

  • 20 Chalcot Square London NW1 8YA

    2020/1259/P 0m away

    Approval of details required by Condition 4 of 2018/6139/P relating to details of the proposed living roof.

    Granted Full applications

  • 20 Chalcot Square London NW1 8YA

    2018/6139/P 0m away

    Erection of a single storey extension to the rear elevation at basement, installation of metal staircase and balustrade for a roof terrace at ground floor level, alterations to the front, rear and side facade/fenestration and conversion of the existing basement flat into a dwellinghouse.

    Granted Full applications Extension Windows or glazing
    Small domestic

  • 20 Chalcot Square London NW1 8YA

    2020/1653/L 0m away

    Details of condition 3G (external staircase) of listed building consent 2018/6156/L dated 03/05/2019 for internal and external alterations for the erection of a single storey infill extension at basement level, installation of metal staircase with balustrade for a roof terrace above; fenestration and façade treatment to the front, rear and rear elevation and internal alterations throughout.

    Granted Heritage and listed buildings Extension Windows or glazing
    Small domestic

  • 20 Chalcot Square London NW1 8YA

    2020/0247/L 0m away

    Approval of Condition 4 (new timber doors) of planning approval ref 2019/3269/L.granted on 16/10/2019 for various internal alterations and an infill basement extension.

    Granted Heritage and listed buildings Extension

  • 20 Chalcot Square London NW1 8YA

    2020/1085/L 0m away

    Approval of details for condition 3 parts b), c) e), f) h) and i) of application ref 2018/6156/L.

    Granted Heritage and listed buildings

  • 20 Chalcot Square London NW1 8YA

    2019/2644/P Submitted 21 May 2019 2m away

    Erection of an infill extension to the void space between the first and second floors.

    Withdrawn Full applications Extension 9 docs

In Camden

  • 2026/0825/L Granted

    88 Frognal London NW3 6XB

    Discharge of condition 4 (a) Plan, elevation and section drawings of all new internal doors at a scale of 1:10 with typical moulding and architrave details at a scale of 1:1. b) Plan, elevation and section drawings, including jambs, head and cill, of all new windows and doors, including garage doors and windows, at a scale of 1:10 with typical glazing bar details at 1:1) of 2025/3436/L (External works comprising demolition of existing conservatory and erection of single-storey ground floor extension; demolition of existing garage and erection of replacement garage; alterations and repairs to roof; repair and minor alterations to building facade; provision of new hard and soft landscaping. Interior works comprising general remodelling works; minor changes to planform and openings; installation of new mechanical and electrical services throughout)

    2 Mar 2026 Heritage and listed buildings
  • 2026/2946/L Awaiting decision

    Flat 1, 73 Eton Avenue London NW3 3EU

    Replacement of existing defective rear lean-to conservatory with a new slimline powder-coated aluminium framed conservatory with clear double glazing, on the exact same footprint as existing.

    3 Sep 2026 Heritage and listed buildings
  • 2026/3754/L Awaiting decision

    10 Great Ormond Street London Camden WC1N 3RB

    Coversion of 3 flats into 4 and internal alterations to the listed building

    2 Sep 2026 Heritage and listed buildings
  • 2026/2194/L Withdrawn

    Dunboyne Road Estate Dunboyne Road London NW3 2YY

    Installation of Air Source and Water Source Heat Pumps in basement car park with associated acoustic and security enclosures; installation of PV Panels on roof of Blocks 1, 2 and 3; removal of existing gas boilers and associated plant; installation of a new estate-wide heating network including Heat Interface Units, radiators, pipework and associated infrastructure to serve Flats 1-71; excavation of trenches and installation of below-ground heating, water and electrical infrastructure; and associated ancillary works.

    29 May 2026 Heritage and listed buildings
  • 2026/3773/L Awaiting decision

    47 Kelly Street London NW1 8PG

    Replacement of concrete roof tiles with slate roof tiles (Retrospective)

    28 Aug 2026 Heritage and listed buildings