12 Holly Mount London Camden NW3 6SG

This site has had 3 applications since 2023: 1 approved, 0 refused.

• 2023/3622/L Granted

  12 Holly Mount London Camden NW3 6SG

  Reconfiguration of internal walls at first floor level.

  Decided 10 Nov 2023 Heritage and listed buildings
• 2023/0846/P Withdrawn

  12 Holly Mount London Camden NW3 6SG

  Replacement of single glazed windows with slimline double glazing. Insertion 2x side/rear rooflights. Repairs to the roof including replacement of slates and repairs to windows. Replacement of fascia boards and repairs to the existing chimney stack. Replacement of upvc guttering with cast iron guttering. Internal alterations.

  Decided 12 Jun 2023 Full applications

1. 12 Jun 2023

   Decision issued: Withdrawn Decision

2. 22 Jul 2026

   Added to PlanIndex

The applicant withdrew this application before Camden decided it, and is free to submit a revised scheme at any time. 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.

• 12 Holly Mount London NW3 6SG

  2011/4328/T 50 yards away

  REAR GARDEN: (TPO ref: 9H) 1 x Sycamore - Thin and reduce crown by 25%.

  Granted Trees

• 12 Holly Mount London NW3 6SG

  2024/4724/T 50 yards away

  (TPO REF: 9H-T4) REAR GARDEN: 1 x Sycamore (T1) - Reduce overall canopy by 1.5m back to previous pruning points.

  Granted Trees

• 12 Holly Mount London NW3 6SG

  2021/1789/T 50 yards away

  REAR GARDEN: 1 x Sycamore (T1) - Reduce back to previous pruning points. (1.5m overall reduction of new growth).

  Granted Trees

• 12 Holly Mount London Camden NW3 6SG

  2023/0846/P 50 yards away

  Replacement of single glazed windows with slimline double glazing. Insertion 2x side/rear rooflights. Repairs to the roof including replacement of slates and repairs to windows. Replacement of fascia boards and repairs to the existing chimney stack. Replacement of upvc guttering with cast iron guttering. Internal alterations.

  Withdrawn Full applications Loft or dormer Windows or glazing

• 12 Holly Mount London NW3 6SG

  2023/0957/T 50 yards away

  REAR GARDEN: 1 x Sycamore (T1) - Reduce total canopy by 2m back to previous pruning points.

  Granted Trees

• 12 Holly Mount London NW3 6SG

  2017/1838/T 50 yards away

  (TPO REF 9H) REAR GARDEN: 1 x Sycamore - Crown reduce all over by 1-2m

  Granted Trees

• 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