27 Mercer Street London WC2H 9QR

This site has had 3 applications since 2015: 3 approved, 0 refused.

• 2015/5451/L Granted

  27 Mercer Street London WC2H 9QR

  Internal alterations at basement and ground floor levels and erection of glazing over rear courtyard.

  Decided 3 Dec 2015 Heritage and listed buildings
• 2015/4525/P Granted

  27 Mercer Street London WC2H 9QR

  Installation of glazing over rear courtyard and internal alterations.

  Decided 3 Dec 2015 Full applications

1. 21 Dec 2016

   Decision issued: Granted

2. 22 Jul 2026

   Added to PlanIndex

• 2015/5451/L Granted

  27 Mercer Street London WC2H 9QR

  Internal alterations at basement and ground floor levels and erection of glazing over rear courtyard.

  Decided 3 Dec 2015 Heritage and listed buildings

Camden granted permission on 21 December 2016, 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 Mercer Street London WC2H 9QR

  2015/5451/L 50 yards away

  Internal alterations at basement and ground floor levels and erection of glazing over rear courtyard.

  Granted Heritage and listed buildings Windows or glazing

• 27 Mercer Street London WC2H 9QR

  2015/4525/P 50 yards away

  Installation of glazing over rear courtyard and internal alterations.

  Granted Full applications Windows or glazing

• 23 Mercer Street London WC2H 9QR

  2024/4161/P 50 yards away

  92% historically approved

  Excavation of the existing basement level, and removal and replacement of the existing lightwell glazed infill.

  Awaiting decision Full applications Extension Windows or glazing

• 23 Mercer Street London Camden WC2H 9QR

  2024/4277/L 50 yards away

  96% historically approved

  Excavation of the existing basement level, reconfiguration and reordering of internal layouts, and removal and replacement of the existing lightwell glazed infill.

  Awaiting decision Heritage and listed buildings Extension Windows or glazing

• 23 Mercer Street London WC2H 9QR

  2010/0574/P 50 yards away

  Reinstating of existing Pulley at 3rd floor level and retractable platform at 1st, 2nd and 3rd floor levels (C3)

  Granted Full applications

• 23 Mercer Street London WC1H 9QR

  2010/0401/L 50 yards away

  Reinstating of existing Pulley at 3rd floor level and retractable platform at 1st, 2nd and 3rd floor levels (C3)

  Granted Heritage and listed buildings

• 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