3 Holly Mount London Camden NW3 6SG

This site has had 4 applications since 2026: 1 approved, 0 refused.

• 2026/2942/L Awaiting decision

  3 Holly Mount London Camden NW3 6SG

  Erection of mansard roof extension, raising of chimneys, opening of second-floor rear window, as well as internal works including removing of partition walls and expansion staircase

  Submitted 13 Jul 2026 Heritage and listed buildings
• 2026/2623/P Awaiting decision

  3 Holly Mount London Camden NW3 6SG

  Erection of mansard roof extension, raising of chimneys, opening of second-floor rear window, as well as various internal works

  Submitted 23 Jun 2026 Householder
• 2026/0299/L Granted

  3 Holly Mount London Camden NW3 6SG

  Widening of the opening between the front and the rear room at ground floor level.

  Decided 4 Mar 2026 Heritage and listed buildings

1. 22 Jul 2026

   Added to PlanIndex

2. Decision

   Awaiting decision

   The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

   Camden took a median of 43 days over the applications it decided in the last year.

This application is with Camden for determination, against a statutory target of eight weeks. Over the last year Camden decided full applications in a median of 61 days. More in our guide to how long planning decisions take.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 3 Holly Mount London Camden NW3 6SG

  2026/2942/L Submitted 13 Jul 2026 50 yards away

  96% historically approved · decision due ~7 Sep

  Erection of mansard roof extension, raising of chimneys, opening of second-floor rear window, as well as internal works including removing of partition walls and expansion staircase

  Awaiting decision Heritage and listed buildings Extension Loft or dormer +1 2 docs

• 3 Holly Mount London Camden NW3 6SG

  2026/2623/P Submitted 23 Jun 2026 50 yards away

  88% historically approved · decision due ~7 Sep

  Erection of mansard roof extension, raising of chimneys, opening of second-floor rear window, as well as various internal works

  Awaiting decision Householder Extension Loft or dormer +1 29 docs
  Domestic

• 3 Holly Mount London NW3 6SG

  2025/2158/L 50 yards away

  96% historically approved

  Proposed internal alterations to the Ground floor and Lower ground floor. External alterations include; enclosure of the rear areaway, widening of openings at Ground floor, construction of parapet wall to the rear closet wing, reinstate window arch at 1st floor, installation of rooflight to the rear bathroom.

  Awaiting decision Heritage and listed buildings Loft or dormer Windows or glazing

• 3 Holly Mount London Camden NW3 6SG

  2026/0299/L Submitted 26 Jan 2026 50 yards away

  Widening of the opening between the front and the rear room at ground floor level.

  Granted Heritage and listed buildings 13 docs

• 3 Holly Mount London NW3 6SG

  2025/5668/L Submitted 15 Dec 2025 50 yards away

  Details of condition 4 (doors, floors and bricks) of listed building consent (2025/2158/L) granted on 22/10/2025 for 'Internal and external alterations including the widening of existing openings and increasing the height of the closet wing to the rear and replacement skylight'

  Granted Heritage and listed buildings 19 docs

• 4 Holly Mount London Camden NW3 6SG

  2023/1926/L 50 yards away

  Creation of en-suite bathroom within existing modern roof extension.

  Granted Heritage and listed buildings Extension

• 2026/0990/P Refused

  1 Bleeding Heart Yard & 19 Greville Street London EC1N 8SJ

  Change of use from office space and restaurant use (Class E) and members club (Sui Generis) to affordable workspace and restaurant use (Class E) and 1 x residential unit on the third and fourth floors (Class C3). Erection of a two-storey roof extension across 19 Greville Street and 1 Bleeding Heart Yard, including alterations at second-floor level to the interior courtyard elevation, ground-floor fenestration changes, and a roof terrace for the associated residential unit.

  Received 26 Mar, published by the council 24 Jul 2026 Full applications
• 2026/3044/P Granted

  London Irish Centre 50-52 Camden Square London NW1 9XB

  Details to discharge Condition 25 Part A (Air Quality Monitoring) of planning permission ref. 2020/1481/P dated 17/05/24 for 'Redevelopment of site to provide new and reconfigured community centre and ancillary residential accommodation (Class D1/ D2) involving alterations to retained buildings at No's. 50, 51 and 52 Camden Square including replacement of two storey 'link' building; demolition of Murray Street and Murray Mews buildings and replacement with part-three / part-four storey building (plus basement level) with second and third floor terraces and new entrance; associated landscaping and cycle parking'.

  Received 20 Jul, published by the council 2 Aug 2026 Full applications
• 2026/4338/P Awaiting decision

  32 Willoughby Road London NW3 1RU

  Details to discharge condition 6 (tree protection methods) of planning permission 2025/4186/P granted 13/11/2025 for 'Demolition of existing two storey outrigger and replacement with part two-storey, part single storey rear extension, loft conversion with dormer and roof light to main roof at rear, new windows to flanking wall, replacement of existing windows and installation of a gate and fence to side'.

  Received 5 Oct, published by the council 9 Oct 2026 Full applications
• 2026/4141/P Awaiting decision

  24 Endell Street London WC2H 9HQ

  Relocation of three air conditioning condenser units to first floor roof, construction of an acoustic enclosure and other associated works.

  Received 5 Oct, published by the council 9 Oct 2026 Full applications
• 2026/3907/P Awaiting decision

  Flat 1 16 Lyndhurst Road London NW3 5NL

  External renovations to the front of the property, including works to the entry porch, steps, replacment front door, installation of metal railings to boundary wall and paving to front garden and erection of a glass roof to the side passage to create a bike shelter.

  Received 5 Oct, published by the council 9 Oct 2026 Full applications