42 & Flat 42A Mornington Terrace London NW1 7RT

1. 12 Nov 2025

   Received by Camden

2. 19 Dec 2025

   Decision issued: Granted

3. 9 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

Heritage applications concern listed buildings and conservation areas. Listed building consent is needed for works, inside or out, that affect the special interest of a listed building, and carrying out such works without consent is a criminal offence. The council weighs harm to the heritage asset against any public benefit of the proposal.

More on heritage and listed buildings applications in our guide

• 42 Mornington Terrace London NW1 7RT

  2015/3107/L 0m away

  Replacement of existing window and door and replacement of external staircase, at rear ground floor level.

  Granted Heritage and listed buildings Windows or glazing

• 5 Lyndhurst Gardens London NW3 5NS

  2017/1500/T 0m away

  REAR GARDEN: 7 x - 1 Row - Leyland Cypress - (Chaemcyparis x leylandii) -reduce height by 50%(3m) 2 x Apple - Reduce all new growth by 25%. 1 x - Bay (Laurus nobilus) - -Trim back to neat rounded shape for regular maintenance.

  Granted Trees

• 42 Mornington Terrace London NW1 7RT

  2021/2190/L 0m away

  Installation of temporary internal secondary glazing to eight windows and four mechanical ventilation units to the front of the property at all floors for noise mitigation during construction of the HS2 railway at Euston.

  Granted Heritage and listed buildings Windows or glazing

• 42 Mornington Terrace London NW1 7RT

  2025/2503/T 0m away

  FRONT GARDEN: 2 x Magnolia (Magnolia spp) (T1) - Reduce all round back to previous reduction points, approx. 1m leaving furnishing growth. Remove low small limb on back tree.

  Granted Trees

• 42 Mornington Terrace London NW1 7RT

  2015/5310/T 0m away

  FRONT GARDEN: 2 x Magnolia - Reduce height and lateral spread by 1.5m

  Granted Trees

• 42 & Flat 42A Mornington Terrace London NW1 7RT

  2025/4917/P Submitted 12 Nov 2025 0m away

  Amalgamation of two flats to create single dwellinghouse.

  Granted Full applications New dwelling 10 docs
  Several homes

• 2026/0825/L Granted

  88 Frognal London NW3 6XB

  Discharge of condition 4 (a) Plan, elevation and section drawings of all new internal doors at a scale of 1:10 with typical moulding and architrave details at a scale of 1:1. b) Plan, elevation and section drawings, including jambs, head and cill, of all new windows and doors, including garage doors and windows, at a scale of 1:10 with typical glazing bar details at 1:1) of 2025/3436/L (External works comprising demolition of existing conservatory and erection of single-storey ground floor extension; demolition of existing garage and erection of replacement garage; alterations and repairs to roof; repair and minor alterations to building facade; provision of new hard and soft landscaping. Interior works comprising general remodelling works; minor changes to planform and openings; installation of new mechanical and electrical services throughout)

  2 Mar 2026 Heritage and listed buildings
• 2026/3754/L Awaiting decision

  10 Great Ormond Street London Camden WC1N 3RB

  Coversion of 3 flats into 4 and internal alterations to the listed building

  2 Sep 2026 Heritage and listed buildings
• 2026/2194/L Withdrawn

  Dunboyne Road Estate Dunboyne Road London NW3 2YY

  Installation of Air Source and Water Source Heat Pumps in basement car park with associated acoustic and security enclosures; installation of PV Panels on roof of Blocks 1, 2 and 3; removal of existing gas boilers and associated plant; installation of a new estate-wide heating network including Heat Interface Units, radiators, pipework and associated infrastructure to serve Flats 1-71; excavation of trenches and installation of below-ground heating, water and electrical infrastructure; and associated ancillary works.

  29 May 2026 Heritage and listed buildings
• 2026/3773/L Awaiting decision

  47 Kelly Street London NW1 8PG

  Replacement of concrete roof tiles with slate roof tiles (Retrospective)

  28 Aug 2026 Heritage and listed buildings
• 2026/3715/L Awaiting decision

  29 Jeffrey's Street London NW1 9PS

  Replacement of single-glazed timber windows with vacuum sealed double-glazed timber windows.

  28 Aug 2026 Heritage and listed buildings