27 John Street & 21 John's Mews London WC1N 2BX

This site has had 2 applications since 2017: 2 approved, 0 refused.

• 2017/1959/P Granted

  27 John Street & 21 John's Mews London WC1N 2BX

  Change of use from publisher's office (Class B1) to dwelling house (Class C3); demolition of existing rear extension and erection of new single storey rear extension with associated terrace above and new French windows to provide access; alterations to rear elevation; replacement of metal windows at 21 John's Mews with new timber sash windows; and conversion of garage to habitable room.

  Decided 3 Aug 2017 Full applications

1. 4 Aug 2017

   Decision issued: Granted

2. 22 Jul 2026

   Added to PlanIndex

2 later applications on the register refer to this one:

• 2019/4496/P Granted

  27 John Street London WC1N 2BX

  Change of use from publisher's office (Class B1) to dwelling house (Class C3); demolition of existing rear extension and erection of new single storey rear extension with associated terrace above and new French windows to provide access; alterations to rear elevation; replacement of metal windows at 21 John's Mews with new timber sash windows; and conversion of garage to habitable room (resubmission of previously approved application refs: 2017/1959/P & 2017/2450/L).

  Decided 12 Feb 2020 Full applications
• 2019/5338/L Granted

  27 John Street London WC1N 2BX

  Internal alterations associated with proposed change of use to dwelling house; demolition of existing single storey rear extension and erection of new single storey rear extension with associated terrace above and new French windows to provide access; alterations to rear elevation; replacement of metal windows at 21 John's Mews with new timber sash windows; roof alterations and installation of new rooflight.(resubmission of previously approved application refs: 2017/1959/P & 2017/2450/L).

  Decided 12 Feb 2020 Heritage and listed buildings

Camden granted permission on 4 August 2017, 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.

• 27 John Street London WC1N 2BX

  2020/2530/L 50 yards away

  Details required by condition 4 parts a (openings between front and rear rooms) and c (details of service runs) of listed building consent ref: 2019/5338/L granted 12/02/2020 (for internal alterations associated with change of use to dwelling house and various extensions and alterations).

  Granted Heritage and listed buildings Extension
  Domestic

• 27 John Street & 21 John's Mews London WC1N 2BX

  2017/1959/P 50 yards away

  Change of use from publisher's office (Class B1) to dwelling house (Class C3); demolition of existing rear extension and erection of new single storey rear extension with associated terrace above and new French windows to provide access; alterations to rear elevation; replacement of metal windows at 21 John's Mews with new timber sash windows; and conversion of garage to habitable room.

  Granted Full applications Extension Demolition +1
  Small domestic

• 23 John's Mews London WC1N 2PA

  2017/1130/P 50 yards away

  Retention of rooflight and terrace at roof (third floor) level.

  Granted Full applications Loft or dormer

• 12 Northington Street London WC1N 2NW

  2014/5618/L 50 yards away

  Erection of mansard roof extension with dormer windows and inset roof terraces at second floor level and associated internal alterations.

  Granted Heritage and listed buildings Extension Loft or dormer +1

• 12 - 14 Northington Street London WC1N 2NW

  2016/5354/P 50 yards away

  Installation of new pavement slabs in front of dwellings

  Granted Full applications

• 12 Northington Street and 28 John Street London WC1N 1NW

  2013/0964/P 50 yards away

  Installation of single storey glass conservatory at ground floor level in rear lightwell of 12 Northington Street together with partial infil at first floor level, following removal of existing external staircase and first floor balcony, in addition to various internal alterations and new access door from 28 John Street at roof level to the existing roof terrace of single dwelling house (Class C3).

  Granted Full applications Extension
  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