21 Chalcot Square London NW1 8YA

This site has had 2 applications since 2023: 2 approved, 0 refused.

• 2022/4762/P Granted

  21 Chalcot Square London NW1 8YA

  Installation of an air source heat pump with enclosure with slatted timber cover on rear roof terrace, installation of security grilles to the front and in the rear outrigger all at basement level.

  Decided 12 Apr 2023 Full applications

1. 12 Apr 2023

   Decision issued: Granted

2. 22 Jul 2026

   Added to PlanIndex

Camden granted permission on 12 April 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.

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.

• 21-22A Chalcot Square London NW1 8YA

  2015/2378/P 50 yards away

  Creation of a doorway to party wall in rear garden.

  Granted Full applications

• 21 Chalcot Square London NW1 8YA

  2022/4762/P 50 yards away

  Installation of an air source heat pump with enclosure with slatted timber cover on rear roof terrace, installation of security grilles to the front and in the rear outrigger all at basement level.

  Granted Full applications Extension

• 20 Chalcot Square London NW1 8YA

  2019/2644/P Submitted 21 May 2019 50 yards away

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

  Withdrawn Full applications Extension 9 docs

• 20 Chalcot Square London NW1 8YA

  2018/6156/L Submitted 13 Dec 2018 50 yards away

  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.

  Granted Heritage and listed buildings Extension Windows or glazing 3 docs
  Small domestic

• 20 Chalcot Square London NW1 8YA

  2018/6139/P Submitted 13 Dec 2018 50 yards 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 17 docs
  Small domestic

• 20 Chalcot Square London NW1 8YA

  2019/3269/L Submitted 21 May 2019 50 yards away

  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.

  Granted Heritage and listed buildings Extension Windows or glazing 11 docs
  Small domestic

• 2026/1141/L Granted

  25 John Street London WC1N 2BS

  Internal and external alterations to partition layout at basement, supporting structures and external ground level, and alterations to design of conservatory, windows and doors granted under listed building consent 2024/0338/L dated 06/08/2024.

  Received 26 Mar, published by the council 24 Jul 2026 Heritage and listed buildings
• 2025/1781/L Granted

  Frognal Rise House Lower Terrace London NW3 6RE

  Demolition of existing garage and interlinking gallery and replacement with new garage and garden room with link, new basement floor below garden, alterations to main house including replacement windows including reinstated oriel window and new French doors to entrance elevation, new roofing to side wing, new portico and replacement door to front elevation, enlargement of existing lightwell, replacement gates and canopy over entrance gate, restorations of boundary treatments, associated internal alterations including partial underpinning works and other minor alterations.

  Received 22 Apr, published by the council 22 Jul 2026 Heritage and listed buildings
• 2026/4129/L Awaiting decision

  6 Leverton Street London NW5 2PJ

  Strip out kitchen including floor tiles and replace; replace plumbing and flooring in rear ensuite; replace plumbing in front ensuite and WC; replace internal doors; replace garden wall with metal railing; replace 3 rear windows, 3 rear elevation side windows, 1 rear door and 1 rear elevation side door with double-glazed crittal windows and doors; remove 2 rear windows; render rear elevation brickwork; and associated works.

  Received 1 Oct, published by the council 9 Oct 2026 Heritage and listed buildings
• 2026/1686/L Granted

  Flat Ground and 1st Floor and Flat 2nd and 3rd Floor 14 Downshire Hill London NW3 1NR

  External and internal alterations in connection with conversion of two self-contained flats into a single-family dwellinghouse, including new doors at rear ground and second floor level, replacement windows at rear second and third floors level, removal of internal partitions, extending the stair handrail, and replacement internal doors, parquet flooring, skirting, architraves, cornicing, and fittings.

  Received 19 May, published by the council 24 Jul 2026 Heritage and listed buildings
• 2026/2202/L Refused

  4 Hampstead Square London NW3 1AB

  Erection of conservatory to front elevation.

  Received 27 May, published by the council 24 Jul 2026 Heritage and listed buildings