Planning application
20 Mecklenburgh Square London WC1N 2AD
Works: Extension Demolition Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Demolition of an existing two-storey closet wing and replacement with the erection of a two-storey rear extension, a new glazed staircase enclosure and roof garden on the flat roof of the proposed rear extension, including a new glass balustrade at first floor level, and internal and external alterations to existing flat (Class C3).
As published by the council, reference 2012/1012/P
Application record
- Reference
- 2012/1012/P
- Category
- Full applications
- Status
- Final Decision
- Decision
- Granted
- Decided
- 9 May 2012
- Postcode
- WC1N 2AD
Site history
Applications at this address on the Camden register
This site has had 6 applications since 2010: 6 approved, 0 refused.
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2014/2928/P Granted
20 Mecklenburgh Square London WC1N 2AD
Non-material amendment to change cladding and covering materials in rear extension, change of plan layout of upper ground floor to rear extension by replacing drawing numbers 220_G_020G, 021H and 022G with drawing numbers 220_G_020K, 021K and 022H pursuant to pursuant to approved permission reference 2012/1012/P dated 09/05/2012
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2014/3480/L Granted
20 Mecklenburgh Square London WC1N 2AD
Alterations to cladding and minor change of plan layout to the upper ground floor of the rear extension approved on 09/05/12 (ref: 2012/1255/L). Retrospective.
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2012/1255/L Granted
20 Mecklenburgh Square London WC1N 2AD
Demolition of an existing two-storey closet wing and replacement with the erection of a two-storey rear extension, a new glazed staircase enclosure and roof garden on the flat roof of the proposed rear extension, including a new glass balustrade at first floor level, and internal and external alterations including retrospective consent for works to the main stone staircase to existing flat (Class C3).
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2010/3452/L Granted
20 Mecklenburgh Square London WC1N 2AD
Internal and external alterations to non self contained maisonette (Class C3) at basement, ground and first floor levels including replacement of first floor rear sash window with French door and fixed lights.
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2010/3428/P Granted
20 Mecklenburgh Square London WC1N 2AD
Replacement of first floor rear sash window with French door and fixed lights to non self contained maisonette (Class C3).
Timeline
Dates from the published record
-
9 May 2012
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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2014/2928/P Granted
20 Mecklenburgh Square London WC1N 2AD
Non-material amendment to change cladding and covering materials in rear extension, change of plan layout of upper ground floor to rear extension by replacing drawing numbers 220_G_020G, 021H and 022G with drawing numbers 220_G_020K, 021K and 022H pursuant to pursuant to approved permission reference 2012/1012/P dated 09/05/2012
What this grant of permission means
Camden granted permission on 9 May 2012, 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
-
20 Mecklenburgh Square London WC1N 2AD
Non-material amendment to change cladding and covering materials in rear extension, change of plan layout of upper ground floor to rear extension by replacing drawing numbers 220_G_020G, 021H and 022G with drawing numbers 220_G_020K, 021K and 022H pursuant to pursuant to approved permission reference 2012/1012/P dated 09/05/2012
Granted Full applications Extension -
20 Mecklenburgh Square London WC1N 2AD
Demolition of an existing two-storey closet wing and replacement with the erection of a two-storey rear extension, a new glazed staircase enclosure and roof garden on the flat roof of the proposed rear extension, including a new glass balustrade at first floor level, and internal and external alterations including retrospective consent for works to the main stone staircase to existing flat (Class C3).
Granted Heritage and listed buildings Extension Demolition +1 -
Flat 1 20 Mecklenburgh Square London WC1N 2AD
Minor internal alterations including; replace glazed doors on extension with a contemporary design, replace window and door to yard in lower ground floor kitchen with contemporary design replacement, change floor covering of yard from limestone to slate and replace timber cladding on recent extension with render and replace glass balustrade to extension with black metal railings.
Granted Heritage and listed buildings Extension Windows or glazing -
Flat 1 20 Mecklenburgh Square London WC1N 2AD
Minor internal alterations including; replace contemporary designed glazed doors on extension with a contemporary design, replace window and door to yard in lower ground floor kitchen with contemporary design, change floor covering of yard from limestone to slate and replace timber cladding on recent extension with render and replace glass balustrade to extension with black metal railings.
Granted Full applications Extension Windows or glazing -
20 Mecklenburgh Square London WC1N 2AD
Replacement of first floor rear sash window with French door and fixed lights to non self contained maisonette (Class C3).
Granted Full applications Windows or glazing -
20 Mecklenburgh Square London WC1N 2AD
Internal and external alterations to non self contained maisonette (Class C3) at basement, ground and first floor levels including replacement of first floor rear sash window with French door and fixed lights.
Granted Heritage and listed buildings Windows or glazing
Other full applications
In Camden
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2026/2516/P Withdrawn
31 Loveridge Road London Camden NW6 2DU
Amalgamation of the existing three self-contained one-bedroom flats into a single-family dwelling house; demolition and replacement of existing outrigger; erection of a single-storey rear wrap-around extension; erection of a rear dormer extension; creation of a roof terrace above outrigger; replacement of existing windows with timber double glazed units; installation of rooflights to front roofslope; and installation of an air source heat pump in rear garden.
-
2026/3830/P Awaiting decision
Euston Tower 286 Euston Road London NW1 3DP
Deed of variation to allow more flexibility with Affordable housing payments for redevelopment of Euston Tower comprising retention of parts of the existing building (including central core, basement and foundations) and erection of a new building incorporating these retained elements, to provide a 32-storey mixed-use building providing offices and research and development floorspace (Class E(g)) and office, retail, café and restaurant space (Class E) and Enterprise Space (Class E/F) at ground and first floors, and associated external terraces; public realm enhancements, including new landscaping and provision of new publicly accessible steps and ramp; short and long stay cycle storage; servicing; refuse storage; plant and other ancillary and associated work.
-
2026/3282/P Granted
5 Berkley Road London NW1 8XX
Installation of 1no. above ground gas riser from the basement flat to the meter box at first floor (retrospective)
-
2026/0483/P Granted
100 Avenue Road London NW3 3HF
Discharge of details for condition 47 (surface water run off details) of planning permission 2026/0404/P granted on 19/06/2026 for " Variation of conditions (2 plan numbers); 8 (quantum of commercial space); 13 (commercial windows); 15 (Wind Microclimate); 19 (commercial windows); 24 (Air quality); 34 (development quantum); 40 (Circular Economy); 44 (designing out crime); 45 (Fire Strategy); 46 (SuDS); 48 (Community facility removed), 48 (wheelchair units), 49 (TfL health and safety) to planning permission ref. 2025/0852/P (for demolition of building and provision of a mixed-use residential-led development) to secure alterations to the external appearance; internal residential and commercial space layouts; omission of community floorspace and increased affordable housing provision; cycle and car parking; hard and soft landscaping, and other associated amendments”
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2026/2697/P Awaiting decision
Flat 1, 73 Eton Avenue London NW3 3EU
Replacement of existing defective rear lean-to conservatory with a new slimline powder-coated aluminium framed conservatory with clear double glazing, on the exact same footprint as existing.