Planning application
48 Fitzroy Street and 21-23 Grafton Mews London W1T
Works: Extension Loft or dormer Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Replacement of 2nd floor mansard storey at 21-23 Grafton Mews by new brick built roof extension plus 2nd floor rear extension and external alterations to fenestration at front and rear; internal alterations to lower and upper ground floors of 48 Fitzroy Street and changes in fenestration to rear; all associated with the change of use of the second floor flat at Grafton Mews to Class B1 offices and the change of use of the basement and ground floor offices at 48 Fitzroy Street to a 2 bed maisonette (Class C3).
As published by the council, reference 2017/6044/L
Application record
- Reference
- 2017/6044/L
- Category
- Heritage and listed buildings
- Status
- Final Decision
- Decision
- Granted
- Decided
- 12 Jan 2018
Site history
Applications at this address on the Camden register
This site has had 2 applications since 2018: 2 approved, 0 refused.
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2017/4915/P Granted
48 Fitzroy Street and 21-23 Grafton Mews London W1T
Replacement of 2nd floor mansard storey at 21-23 Grafton Mews by new brick built roof extension plus 2nd floor rear extension and external alterations to fenestration at front and rear, and changes in fenestration to rear of 48 Fitzroy Street, all associated with the change of use of the second floor flat at Grafton Mews to Class B1 offices and the change of use of the basement and ground floor offices at 48 Fitzroy Street to a 2 bed maisonette (Class C3).
Timeline
Dates from the published record
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12 Jan 2018
Decision issued: Granted
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22 Jul 2026
Added to PlanIndex
Related applications
Cases linked to this one on the register
1 later application on the register refers to this one:
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2018/2766/L Granted
48 Fitzroy Street 21-23 Grafton Mews London W1T 5BS
Details including sections at 1:10 of all windows, external doors and gates on the Fitzroy Street property's side elevation facing the courtyard pursuant to condition 3 of planning permission 2017/6044/L dated 12.01.2018 for: replacement of 2nd floor mansard storey at 21-23 Grafton Mews by new brick built roof extension plus 2nd floor rear extension, and various external and internal alterations to the rear, all associated with the change of use of the second floor flat at Grafton Mews to Class B1 offices and the change of use of the basement and ground floor offices at 48 Fitzroy Street to a 2 bed maisonette.
What this grant of permission means
Camden granted permission on 12 January 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 heritage and listed building applications
Listed building consent is needed for works that affect the special interest of a listed building, and carrying out such works without it is a criminal offence. More in our guide to planning application types.
Nearby applications
Within 500 metres
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48 Fitzroy Street 21-23 Grafton Mews London W1T 5BS
Details including sections at 1:10 of all windows, external doors and gates on the Fitzroy Street property's side elevation facing the courtyard pursuant to condition 3 of planning permission 2017/6044/L dated 12.01.2018 for: replacement of 2nd floor mansard storey at 21-23 Grafton Mews by new brick built roof extension plus 2nd floor rear extension, and various external and internal alterations to the rear, all associated with the change of use of the second floor flat at Grafton Mews to Class B1 offices and the change of use of the basement and ground floor offices at 48 Fitzroy Street to a 2 bed maisonette.
Granted Heritage and listed buildings Extension Loft or dormer +1 -
48 Fitzroy Street 21-23 Grafton Mews London W1T
Details of secure and covered cycle storage areas for 12 cycles pursuant to condition 5 of planning permission 2017/4915/P for: Replacement of 2nd floor mansard storey at 21-23 Grafton Mews by new brick built roof extension plus 2nd floor rear extension and external alterations to fenestration at front and rear, and changes in fenestration to rear of 48 Fitzroy Street, all associated with the change of use of the second floor flat at Grafton Mews to Class B1 offices and the change of use of the basement and ground floor offices at 48 Fitzroy Street to a 2 bed maisonette.
Granted Full applications Extension Loft or dormer +1 -
48 Fitzroy Street 21-23 Grafton Mews London W1T
Details of facing materials and fenestration for the front elevation of the office block at Grafton Mews pursuant to condition 2 of 2017/4915/P for: Replacement of 2nd floor mansard storey at 21-23 Grafton Mews by new brick built roof extension plus 2nd floor rear extension, and external alterations to fenestration, all associated with the change of use of the second floor flat at Grafton Mews to Class B1 offices and the change of use of the basement and ground floor offices at 48 Fitzroy Street to a 2 bed maisonette.
Granted Full applications Extension Loft or dormer +1 -
48 Fitzroy Street and 21-23 Grafton Mews London W1T
Replacement of 2nd floor mansard storey at 21-23 Grafton Mews by new brick built roof extension plus 2nd floor rear extension and external alterations to fenestration at front and rear, and changes in fenestration to rear of 48 Fitzroy Street, all associated with the change of use of the second floor flat at Grafton Mews to Class B1 offices and the change of use of the basement and ground floor offices at 48 Fitzroy Street to a 2 bed maisonette (Class C3).
Granted Full applications Extension Loft or dormer +1 -
10 Fitzroy Square London W1T 5HP
Change of use of part rear ground and part rear first floor from office (Class B1) to 1-bed maisonette (Class C3)
Granted Full applications -
10 Fitzroy Square London W1T 5HP
Change of use from office (B1) to 1 x residential unit (C3) at part ground and part 1st floor levels.
Withdrawn Heritage and listed buildings
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2026/2946/L Awaiting decision
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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.
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2026/3773/L Awaiting decision
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