Planning application
2018/4467/L
3-4 Percy Mews London W1T 1EX
Proposal
Mansard roof extension to create 1x self-contained 2-bed flat, associated works
As published by the council, reference 2018/4467/L
Timeline
Dates from the published record
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8 Mar 2019
Decision issued: Refused
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22 Jul 2026
Added to PlanIndex
What refusal means
The process from here
The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.
Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.
About heritage and listed buildings applications
How this application type works
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
Nearby applications
Within 500 metres
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2018/4219/P Refused
3-4 Percy Mews London W1T 1EX
Mansard roof extension to create 1x self-contained 2-bed flat (Class C3), associated works
-
2016/0201/P Refused
3 Percy Mews London W1T 1EX
Internal alterations to create additional living space within the basement area.
-
2016/2630/L Granted
3 Percy Street LONDON W1T 1DE
Replacement of existing tiles to stall riser and steps with new, replacement of existing aluminium fascia with a timber fascia sign, addition of a projecting sign, and associated decoration.
-
2022/2608/A Granted
3 Percy Street London Camden W1T 1DE
New externally illuminated letters on fascia New projecting sign
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2023/1203/L Granted
3 Percy Street London Camden W1T 1DE
Retrospective works for the addition of a projecting sign and repainting of the ground floor shopfront, and addition of new fascia lettering.
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2016/2569/P Granted
3 Percy Street LONDON W1T 1DE
Alterations to shopfront to retail unit (Class A1).
Other heritage and listed buildings applications
In Camden
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2026/3248/L Awaiting decision
15 Eton Villas London NW3 4SG
Single storey rear extension, internal reconfigurations, installation of double-glazed windows and doors, new air-conditioning units, landscaping to rear garden and erection of outbuilding amongst other alterations to the property.
-
2026/3213/L Awaiting decision
51, 53, 55, 57 Lamb's Conduit Street London Camden WC1N 3NB
Installation of gas infrastructure including an external gas riser, associated pipework, and internal alterations comprising the relocation of gas meters and associated connections
-
2026/2318/L Granted
90 Frognal London NW3 6XB
Structural strengthening of underground vault and underpinning of northern side of ground-floor boot room.
-
2026/2136/L Granted
45 Downshire Hill London NW3 1NU
Proposed repair and replacement of front elevation windows with matching single glazed timber sash units. Replacement modern French doors in slim-profile double glazing. Rear windows retained, and repaired as required.
-
2026/2122/L Granted
6 Royal College Street London NW1 0TH
Various internal and external changes, including replacement and alteration to timber windows, adjustments to internal layout, installation of fire-rated doors and emergency lighting, relocation and rearrangement of bathroom and kitchen (retrospective).