Planning application
340 Grays Inn Road London WC1X 8BG
Works: New dwelling Extension
Relates to 2022/4469/P
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Variation of conditions to planning permission ref. 2022/4469/P (for change of use of first floor commercial floorspace to residential use and erection of a two storey (plus basement) extension fronting Britannia Street comprising commercial floorspace at basement and ground floors and 5 residential units at first floor; public realm works on 05/12/2024) to amend the configuration of the ground floor including the location of the cycle storage from inside to outside the building, residential staircase doors and entrance lobby, creation of a single commercial unit at ground floor level, increasing the amount of commercial floorspace, removing the level change at the entrance, introducing entrances from Britannia Street into the commercial unit, reconfiguration of the basement to create separate commercial spaces without the level changes, internal alterations to flats 1, 2, 4 and 5 at first floor level, relocation of the first floor riser, movement of a stairwell door to minimise levels differences, the introduction of an AOV to address fire requirements, the introduction of a first floor lift door and external changes to switch balcony sliding doors for swing doors.
As published by the council, reference 2026/2399/P
Application record
- Reference
- 2026/2399/P
- Type
- Variation or Removal of Condition(s)
- Status
- Registered
- Received
- 9 Sep 2026
- Validated
- 22 Sep 2026
- Ward
- Kings Cross
- Postcode
- WC1X 8BG
Site history
Applications at this address on the Camden register
This site has had 6 applications since 2025: 5 approved, 0 refused.
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2025/5074/P Granted
340 Grays Inn Road London WC1X 8BG
Details pursuant to condition 18 (basement engineer) of planning permission ref. 2022/4469/P (dated 05/12/2024) for 'Change of use of first floor commercial floorspace to residential use and erection of a two storey (plus basement) extension fronting Britannia Street comprising commercial floorspace at basement and ground floors and 5 residential units at first floor; public realm works'
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2025/4764/P Granted
340 Grays Inn Road London WC1X 8BG
Details pursuant to condition 16 (green roof) of planning permission ref. 2022/4469/P (dated 05/12/2024) for 'Change of use of first floor commercial floorspace to residential use and erection of a two storey (plus basement) extension fronting Britannia Street comprising commercial floorspace at basement and ground floors and 5 residential units at first floor; public realm works'
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2025/4762/P Granted
340 Grays Inn Road London WC1X 8BG
Details pursuant to condition 14 (enhanced sound insulation) of planning permission ref. 2022/4469/P (dated 05/12/2024) for 'Change of use of first floor commercial floorspace to residential use and erection of a two storey (plus basement) extension fronting Britannia Street comprising commercial floorspace at basement and ground floors and 5 residential units at first floor; public realm works'
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2025/4763/P Granted
340 Grays Inn Road London WC1X 8BG
Details pursuant to condition 13 (internal noise levels habitable rooms) of planning permission ref. 2022/4469/P (dated 05/12/2024) for 'Change of use of first floor commercial floorspace to residential use and erection of a two storey (plus basement) extension fronting Britannia Street comprising commercial floorspace at basement and ground floors and 5 residential units at first floor; public realm works'
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2025/4671/P Granted
340 Grays Inn Road London WC1X 8BG
Amendment to trigger points of conditions 9 (cycle parking) and 10 (waste storage) of planning permission ref. 2022/4469/P (dated 05/12/24) for Change of use of first floor commercial floorspace to residential use and erection of a two storey (plus basement) extension fronting Britannia Street comprising commercial floorspace at basement and ground floors and 5 residential units at first floor; public realm works
Timeline
Dates from the published record
-
9 Sep 2026
Received by Camden
-
22 Sep 2026
Validated
Checked as complete and ready for consideration.
-
28 Sep 2026
Added to PlanIndex
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Decision
Awaiting decision
Decision expected by 17 November 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Camden took a median of 43 days over the applications it decided in the last year.
Related applications
Cases linked to this one on the register
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2022/4469/P Granted
340 Gray's Inn Road London Camden WC1X 8BG
Change of use of first floor commercial floorspace to residential use and erection of a two storey (plus basement) extension fronting Britannia Street comprising commercial floorspace at basement and ground floors and 5 residential units at first floor; public realm works
Documents
Plans, drawings, consultee responses and the officer's report
6 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat happens while it is decided
This application is with Camden for determination, against a statutory target of eight weeks. Over the last year Camden decided amendment applications in a median of 55 days. More in our guide to how long planning decisions take.
About amendment applications
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.
Nearby applications
Within 0.3 miles
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340 Grays Inn Road London WC1X 8BG
Details pursuant to condition 14 (enhanced sound insulation) of planning permission ref. 2022/4469/P (dated 05/12/2024) for 'Change of use of first floor commercial floorspace to residential use and erection of a two storey (plus basement) extension fronting Britannia Street comprising commercial floorspace at basement and ground floors and 5 residential units at first floor; public realm works'
Granted Full applications Extension 5 docs -
340 Grays Inn Road London WC1X 8BG
Details pursuant to condition 18 (basement engineer) of planning permission ref. 2022/4469/P (dated 05/12/2024) for 'Change of use of first floor commercial floorspace to residential use and erection of a two storey (plus basement) extension fronting Britannia Street comprising commercial floorspace at basement and ground floors and 5 residential units at first floor; public realm works'
Granted Full applications Extension 6 docs -
340 Grays Inn Road London WC1X 8BG
Amendment to trigger points of conditions 9 (cycle parking) and 10 (waste storage) of planning permission ref. 2022/4469/P (dated 05/12/24) for Change of use of first floor commercial floorspace to residential use and erection of a two storey (plus basement) extension fronting Britannia Street comprising commercial floorspace at basement and ground floors and 5 residential units at first floor; public realm works
Granted Amendments Extension 3 docs -
340 Grays Inn Road London WC1X 8BG
Details pursuant to condition 16 (green roof) of planning permission ref. 2022/4469/P (dated 05/12/2024) for 'Change of use of first floor commercial floorspace to residential use and erection of a two storey (plus basement) extension fronting Britannia Street comprising commercial floorspace at basement and ground floors and 5 residential units at first floor; public realm works'
Granted Full applications Extension 7 docs -
340 Grays Inn Road London WC1X 8BG
Details pursuant to condition 13 (internal noise levels habitable rooms) of planning permission ref. 2022/4469/P (dated 05/12/2024) for 'Change of use of first floor commercial floorspace to residential use and erection of a two storey (plus basement) extension fronting Britannia Street comprising commercial floorspace at basement and ground floors and 5 residential units at first floor; public realm works'
Granted Full applications Extension 7 docs -
Business Centre 344 Gray's Inn Road London WC1X 8BP
Proposed external alterations to front and rear facade including the installation of replacement mansard windows and proposed extension of rendered brickwork to arched window surround on front elevation
Granted Full applications Extension Loft or dormer +1
Other amendment applications
In Camden
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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.
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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.
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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
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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.
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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.