Planning application
5-6 Underhill Street LONDON NW1 7HS
Works: Extension Windows or glazing Small domestic
Read from the description, not a valuation. How we read the register
Relates to 2015/0034/P
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Variation to condition 3 of planning permission 2015/0034/P dated 10/03/2016, for extensions and alterations to the existing building including erection of a single storey extension to the roof fronting Underhill Street to provide 1 x 3 bed self-contained flat (Class C3 use); namely to include increase in the height of the extension by 0.17m, increase in footprint, installation of new windows in the southwestern side elevation and alterations to the design and fenestration of the single storey extension at roof level.
As published by the council, reference 2017/4332/P
Application record
- Reference
- 2017/4332/P
- Category
- Full applications
- Status
- Final Decision
- Decision
- Granted Subject to a Section 106 Legal Agreement
- Decided
- 29 Aug 2018
- Postcode
- NW1 7HS
Site history
Applications at this address on the Camden register
This site has had 7 applications since 2018: 6 approved, 0 refused.
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2026/1780/P Awaiting decision
5-6 Underhill Street London NW1 7HS
Change of use of ground floor rear office (Class E) unit to residential (Class C3) for the provision of 3no. self-contained residential units; minor alterations to fenestration at rear.
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2025/2776/P Granted
5-6 Underhill Street London NW1 7HS
Details pursuant to Condition 5 (Ground Floor Window Details) of planning permission 2024/5382/P (dated 18/06/2025) for the 'Change of use of ground floor front office (Class E) unit to residential (Class C3) for the provision of two self-contained residential units'.
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2024/5382/P Granted
5-6 Underhill Street London NW1 7HS
Change of use of ground floor front office (Class E) unit to residential (Class C3) for the provision of two self-contained residential units.
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2024/1314/P Granted
5-6 Underhill Street London NW1 7HS
Change of use of second floor office space (Class E) to residential (Class C3) for the provision of a new self-contained residential unit.
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2022/5582/P Granted
5 - 6 Underhill Street London NW1 7HS
Conversion of two office suites on the second floor (Class E) into two self-contained flats (Class C3) with ancillary amenity space, new window and PV solar panels.
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2019/0652/P Granted
5-6 Underhill Street London NW1 7HS
Variation to condition 3 (approved plans) of planning permission ref 2017/4332/P dated 29/08/2019 (as a variation to planning permission ref 2015/0034/P dated 10/03/2016 for extensions and alterations to the existing building including erection of a single storey extension to the roof fronting Underhill Street to provide a self-contained flat), namely to allow an increase in height of the existing lift shaft by 0.5m, installation of a flank door on the side/rear elevation at second floor level to allow access to amended escape stairs fronting onto Underhill Street, alterations to fenestration on the front facade, and changes from a glass balustrade on the Underhill Street elevation to integral juliet balconies.
Timeline
Dates from the published record
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29 Aug 2018
Decision issued: Granted Subject to a Section 106 Legal Agreement
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22 Jul 2026
Added to PlanIndex
Related applications
Cases linked to this one on the register
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2015/0034/P Granted
5 Underhill Street London NW1 7HS
Extensions and alterations to the existing building including erection of a single storey extension to the roof fronting Underhill Street to provide 1 x 3 bed self-contained flat (Class C3 use) with external roof terrace and metal privacy screen, erection of two storey lift shaft to the rear at first and second floor level, installation of external fire escape staircase from ground to second floor level, alterations to the ground floor front elevation to create a new ground floor residential entrance and office entrance fronting Underhill Street, replacement of ground floor window openings with doors to bin store area and office storage area, and installation of roof light on the roof of the single storey front/side extension of the existing office building (Class B1 use).
1 later application on the register refers to this one:
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2019/0652/P Granted
5-6 Underhill Street London NW1 7HS
Variation to condition 3 (approved plans) of planning permission ref 2017/4332/P dated 29/08/2019 (as a variation to planning permission ref 2015/0034/P dated 10/03/2016 for extensions and alterations to the existing building including erection of a single storey extension to the roof fronting Underhill Street to provide a self-contained flat), namely to allow an increase in height of the existing lift shaft by 0.5m, installation of a flank door on the side/rear elevation at second floor level to allow access to amended escape stairs fronting onto Underhill Street, alterations to fenestration on the front facade, and changes from a glass balustrade on the Underhill Street elevation to integral juliet balconies.
What this grant of permission means
Camden granted permission on 29 August 2018, 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.
About full applications
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.
Nearby applications
Within 500 metres
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5-6 Underhill Street London NW1 7HS
Variation to condition 3 (approved plans) of planning permission ref 2017/4332/P dated 29/08/2019 (as a variation to planning permission ref 2015/0034/P dated 10/03/2016 for extensions and alterations to the existing building including erection of a single storey extension to the roof fronting Underhill Street to provide a self-contained flat), namely to allow an increase in height of the existing lift shaft by 0.5m, installation of a flank door on the side/rear elevation at second floor level to allow access to amended escape stairs fronting onto Underhill Street, alterations to fenestration on the front facade, and changes from a glass balustrade on the Underhill Street elevation to integral juliet balconies.
Granted Full applications Extension Windows or glazingSmall domestic -
5-6 Underhill Street London NW1 7HS
Change of use of ground floor front office (Class E) unit to residential (Class C3) for the provision of two self-contained residential units.
Granted Full applications -
5-6 Underhill Street London NW1 7HS
91% historically approved · decision due ~30 Jun
Change of use of ground floor rear office (Class E) unit to residential (Class C3) for the provision of 3no. self-contained residential units; minor alterations to fenestration at rear.
Awaiting decision Full applications Windows or glazing 13 docs -
5-6 Underhill Street London NW1 7HS
Change of use of second floor office space (Class E) to residential (Class C3) for the provision of a new self-contained residential unit.
Granted Full applications -
5-6 Underhill Street London NW1 7HS
Details pursuant to Condition 5 (Ground Floor Window Details) of planning permission 2024/5382/P (dated 18/06/2025) for the 'Change of use of ground floor front office (Class E) unit to residential (Class C3) for the provision of two self-contained residential units'.
Granted Full applications Windows or glazing -
5 Underhill Street London NW1 7HS
Extensions and alterations to the existing building including erection of a single storey extension to the roof fronting Underhill Street to provide 1 x 3 bed self-contained flat (Class C3 use) with external roof terrace and metal privacy screen, erection of two storey lift shaft to the rear at first and second floor level, installation of external fire escape staircase from ground to second floor level, alterations to the ground floor front elevation to create a new ground floor residential entrance and office entrance fronting Underhill Street, replacement of ground floor window openings with doors to bin store area and office storage area, and installation of roof light on the roof of the single storey front/side extension of the existing office building (Class B1 use).
Granted Full applications Extension Loft or dormer +1Small domestic
Other full applications
In Camden
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2026/2471/P Granted
Flat A 26 Eton Avenue London NW3 3HL
Proposed elevational alterations to side and rear of the garden flat.
-
2026/2467/P Granted
42 Mornington Terrace London Camden NW1 7RT
Replacement door and window at lower ground floor level to rear outrigger and installation of sandstone steps in rear garden.
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2026/2424/P Granted
British Museum Great Russell Street London WC1B 3DG
Details of SUDS system evidence required by Condition 10 of planning permission ref 2023/1848/P dated 17/07/2024 for Erection of new two storey building, plus basement and associated works to provide plant and welfare accommodation ancillary to the Museum following demolition of existing building and two storey structures on East Road (to the rear of 9-11 Montague Street and 43 Russell Square)
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2026/3888/P Awaiting decision
Unit A, Ground Floor West 3-5 Bleeding Heart Yard London EC1N 8SJ
Replace solid metal ground floor entrance door with glazed entrance door (Retrospective).
-
2026/3903/P Awaiting decision
2 Fellows Road London NW3 3LP
Details pursuant to Condition 4 (Materials Details) of planning permission ref. 2026/2123/P (dated 21/07/2026) for: Amalgamation of existing two flats into one single dwellinghouse (Class C3); garage conversion to habitable space; infill extension at front lower ground and ground floors; minor changes to fenestration at rear; erection of copper roof extension with rooflight to existing rear extension; replacement terrace railings; installation of rooflight to main roof; new front boundary railings and gates; refurbishment of front steps; rear garden landscaping works; and associated exterior alterations.