Museum House 23-26 Museum Street London WC1A 1JT

This site has had 4 applications since 2015: 2 approved, 2 refused.

• 2016/3411/P Refused

  Museum House 23-26 Museum Street London WC1A 1JT

  Change of use of part second and all of the third floor from Class B1 (office) use to Class C3 (residential) use creating 3 two bedroom apartments.

  Decided 30 Sep 2016 Full applications
• 2015/5169/P Refused

  Museum House 23-26 Museum Street London WC1A 1JT

  Change of use of part second and all of the third floor from Class B1 (office) use to Class C3 (residential) use creating 3 two bedroom apartments.

  Decided 15 Jan 2016 Full applications
• 2014/4117/P Granted

  Museum House 23-26 Museum Street London WC1A 1JT

  Erection of a 5th floor roof extension for use as a self-contained flat (Class C3) with roof terrace and cycle storage at lower ground floor.

  Decided 11 Mar 2015 Full applications

1. 5 Sep 2018

   Received by Camden

2. 11 Sep 2018

   Validated

   Checked as complete and ready for consideration.

3. 19 Jun 2019

   Decision issued: Granted and Warning of Enforcement Action

4. 22 Jul 2026

   Added to PlanIndex

5. 21 Sep 2026

   Status changed to FINAL DECISION

   Previously Final Decision.

• 2014/4117/P Granted

  Museum House 23-26 Museum Street London WC1A 1JT

  Erection of a 5th floor roof extension for use as a self-contained flat (Class C3) with roof terrace and cycle storage at lower ground floor.

  Decided 11 Mar 2015 Full applications

Camden granted permission on 19 June 2019, 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.

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.

• Museum House 23-26 Museum Street London WC1A 1JT

  2016/3411/P 50 yards away

  Change of use of part second and all of the third floor from Class B1 (office) use to Class C3 (residential) use creating 3 two bedroom apartments.

  Refused Full applications New dwelling

• Museum House 23-26 Museum Street London WC1A 1JT

  2014/4117/P 50 yards away

  Erection of a 5th floor roof extension for use as a self-contained flat (Class C3) with roof terrace and cycle storage at lower ground floor.

  Granted Full applications Extension

• Museum House 25 Museum Street London WC1A 1JT

  2017/0461/P 50 yards away

  Amendments to the height and width of the lift shaft and repositioning of the rooflight within the flat roof area granted under reference 2014/4117/P dated 11/03/15 for Erection of a 5th floor roof extension for use as a self-contained flat (Class C3) with roof terrace and cycle storage at lower ground floor.

  Granted Full applications Extension Loft or dormer

• Museum House 25 Museum Street London WC1A 1JT

  2016/4472/P 50 yards away

  Details of windows, external doors and downpipes; sample of the roof cladding; details and sample of a section of the balustrade, as required by condition 4 of planning permission 2014/4117/P dated 11/03/2015 for the erection of a 5th floor roof extension for use as a self-contained flat (Class C3) with roof terrace and cycle storage at lower ground floor.

  Granted Full applications Extension Windows or glazing

• 1st Floor Museum House 23-26 Museum Street London WC1A 1JT

  2013/7239/P 50 yards away

  Change of use of part of the first floor from offices (Class B1) to one selfcontained residential flat (Class C3).

  Granted Full applications

• The Coffee Gallery 23 Museum Street London WC1A 1JL

  2012/5380/P 50 yards away

  Change of use from retail (Class A1) to restaurant (Class A3) and installation of extract duct to rear. [Retrospective]

  Withdrawn Full applications

• 2026/1139/P Granted

  25 John Street London WC1N 2BS

  Alterations to design of conservatory, windows and doors approved under planning permission 2024/0312/P dated 06/08/2024.

  Received 26 Mar, published by the council 24 Jul 2026 Amendments
• 2026/4266/P Awaiting decision

  Unit 3A Camden Wharf London 28 Jamestown Road NW1 7BY

  Variation of the planning permission dated 15.3.1999 (Registered No PE9700702R3) for the redevelopment of the eastern part of the site by the erection of a four-storey building for mixed A1, A3 and B1 and the retention of the lock-keepers cottage as a Canal Information Centre with ancillary retail/ cafe comprising alterations to the elevations, fenestration, shopfront, balustrading, terraces, roof plant and the omission of the approved canopy over the pedestrian area as well as the discharging of part of condition 1 of the said planning permission relating to approval of details of balustrades, shopfronts, the canopy attached to the commercial building and any structure related to it.

  Received 30 Sep, published by the council 6 Oct 2026 Amendments
• 2026/3366/P Granted

  Flat Lower Ground Floor 133 King Henry's Road London NW3 3RD

  Variation of condition 2 (approved plans) of planning permission 2025/1032/P dated 23/04/2025 (which amended 2023/5117/P dated 22/03/2024 (for: Erection of single storey rear extension at lower ground floor, new windows to front and side elevations and new front door) NAMELY, changes to front elevation window and materials

  Received 6 Aug, published by the council 22 Aug 2026 Amendments
• 2026/4223/P Awaiting decision

  6 Conybeare London NW3 3SD

  Variation of Condition 2 (approved plans) of planning permission ref. 2022/2870/P, dated 13/12/2022, for the erection of a single-storey roof extension and internal roof terrace to the front part of the building, namely to regularise amendments to the approved scheme.

  Received 29 Sep, published by the council 6 Oct 2026 Amendments
• 2026/4045/P Granted

  234 - 240 Grafton Road London NW5 4NS

  Non-material amendment to planning permission 2024/4574/P granted 21/01/2026 for 'Erection of mansard roof extension to accommodate 1 x one bedroom and 1 x two bedroom dwellings; erection of a part one part two storey semi-detached one bedroom dwelling within rear garden to Dale Road; new cycle storage within rear garden, installation of 1 x ASHP in rear garden and 2 x ASHP on mansard roof of terrace, alterations to front boundary treatment.' namely to amend windows on the rear elevation of the existing building.

  Received 18 Sep, published by the council 24 Sep 2026 Amendments