Planning application
26/AP/1281
3 Montague Square London Southwark SE15 2LQ
Proposal
Certificate of lawfulness (proposed) for the erection of a ground floor rear extension and conversion of the garage to a habitable room, including the replacement of the garage door with a window.
As published by the council, reference 26/AP/1281
Timeline
Dates from the published record
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5 May 2026
Received by Southwark
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8 May 2026
Validated
Checked as complete and ready for consideration.
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24 Jun 2026
Decision issued: Certificate of Lawfulness Prop- GRANTED
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25 Jul 2026
Added to PlanIndex
What a grant of permission means
The process from here
Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.
Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.
About lawful development applications
How this application type works
A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.
Nearby applications
Within 500 metres
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26/AP/1280 Refused
3 Montague Square London Southwark SE15 2LQ
Prior approval notification for a ground floor rear extension
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DC/19/113677 Granted
SLEEPER COURT, POMEROY STREET, LONDON, SE14 5FY
Details submitted in respect of part of Condition (1) 'Landscape Treatment' and Condition (7) 'Life Time Standard' for the planning permission referenced DC/10/073539 dated 15/10/2010 for the construction of a part three/part four storey block on former garden area of Hammersley House, Pomeroy Street SE14, to provide 2 one bedroom and 6 two bedroom self-contained flats.
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DC/19/113815 Granted
43-49 POMEROY STREET, LONDON, SE14 5BW
The temporary change of use of part ground floor B1(a) floorspace to provide a marketing and sales suite (sui generis) at 43-49 Pomeroy Street, London, SE14
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DC/19/113673 Refused
43-49 POMEROY STREET, LONDON, SE14 5BW
Details submitted in compliance with Condition 32(a) (Solar Panels) of the Planning Permission DC/15/093731 dated 3 August 2016 for the demolition of existing buildings at 43 ? 49 Pomeroy Street, SE14 and the construction of a part six, part seven storey building to the front of the site and the construction of a row of three storey buildings to the rear of the site, comprising in total 441.6m² of Class B1 (Business) floorspace and 65 residential units (Class C3)
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DC/19/112533 Refused
43-49 POMEROY STREET, LONDON, SE14 5BW
Details submitted in compliance with Condition 20 (a) (Green Roof Details), of the Planning Permission DC/15/093731 dated 3 August 2016 for the demolition of existing buildings at 43 ? 49 Pomeroy Street, SE14 and the construction of a part six, part seven storey building to the front of the site and the construction of a row of three storey buildings to the rear of the site, comprising in total 441.6m² of Class B1 (Business) floorspace and 65 residential units (Class C3).
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DC/26/143112 Granted
40 ROMNEY CLOSE, LONDON, SE14 5JH
Application for Prior Approval under Schedule 2, Part 1, Class A, Part (g) of the Town and Country Planning (General Permitted Development) Order 2015 (as amended) for the construction of a single storey rear extension with a depth of 4.50m, a maximum height of 3.18m and an eaves height of 3.0m at 40 Romney Close, SE14.
Other lawful development applications
In Southwark
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26/AP/1647 Granted
7 Medlar Street London Southwark SE5 0JU
Certificate of lawfulness (proposed) for the construction of an L-shaped rear dormer extension and installation of 2no. rooflights to the front roof slope
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26/AP/2189 Awaiting decision
Surrey Square Park Surrey Square London Southwark SE17 2JX
Certificate of Lawfulness (existing) for refurbishment and reconfiguration of the existing children's playground and landscape improvements including new pathways and planting within Surrey Square Park.
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26/AP/2168 Awaiting decision
150A Lower Road London Southwark SE16 2UG
Certificate of lawfulness (proposed) for the change of use of a single dwellinghouse (Use Class C3) to a House in Multiple Occupation (Use Class C4) occupied by three unrelated individuals.
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26/AP/1618 Granted
252 Barry Road London Southwark SE22 0JS
Certificate of lawful development (proposed) for the construction of a rear dormer extension.
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26/AP/1577 Granted
Residence Inn By Marriott London Bridge 201-211 Long Lane London SE1 4PN
Certificate of lawfulness (proposed) for undertaking of facade remedial works to remove combustible cladding materials and replace with a like-for-like non-combustible cladding with no change to the outer aesthetics of the building.