Planning application
21 Mornington Crescent London NW1 7RG
Works: Extension
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Construction of a rear extension at ground level and lower ground floor level.
As published by the council, reference 2023/0439/P
Application record
- Reference
- 2023/0439/P
- Type
- Full Planning Permission
- Status
- Final Decision
- Decision
- Granted
- Received
- 31 Jan 2023
- Validated
- 21 Feb 2023
- Decided
- 29 Apr 2024
- Ward
- Regents Park
- Decision by
- Members Briefing
- Postcode
- NW1 7RG
Site history
Applications at this address on the Camden register
This site has had 5 applications since 2021: 1 approved, 1 refused.
-
2022/0055/L Withdrawn
21 Mornington Crescent London NW1 7RG
Construction of an outbuilding to the rear of garden for the use as a studio office including associated landscaping. See planning permission application 2021/5608/P for associated plans and documents
-
2021/2654/P Withdrawn
21 Mornington Crescent London NW1 7RG
Two storey rear extension at lower and ground floor level and associated works and the reconfiguration of the internal layout.
-
2021/3457/L Withdrawn
21 Mornington Crescent London NW1 7RG
Two storey rear extension at lower and ground floor level and associated works and the reconfiguration of the internal layout.
-
2021/5608/P Refused
21 Mornington Crescent London NW1 7RG
Erection of outbuilding to the rear of garden for use as a studio office with associated landscaping.
Timeline
Dates from the published record
-
31 Jan 2023
Received by Camden
-
21 Feb 2023
Validated
Checked as complete and ready for consideration.
-
29 Apr 2024
Decision issued: Granted
-
22 Jul 2026
Added to PlanIndex
Documents
Plans, drawings, consultee responses and the officer's report
20 documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
Watch members (£5 a month) open the document list from here.
Open the documentsWhat this grant of permission means
Camden granted permission on 29 April 2024, 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 0.3 miles
-
21 Mornington Crescent London Camden NW1 7RG
Erection of outbuilding to the rear of garden for use as a studio office with associated landscaping.
Withdrawn Full applications -
Flat A 21 Mornington Crescent London NW1 7RG
91% historically approved · decision due ~2 Dec
Conversion of maisonette into two self contained flats at ground and lower ground, replacement of window with door and infill at lower ground floor and cycle storage to rear
Awaiting decision Full applications New dwelling Extension +1 8 docs -
Flat A, 21 Mornington Crescent Camden London NW1 7RG
Conversion of existing maisonette to two self-contained flats, excavation of existing front cellar vaults to accommodate bathroom and utility room and infill of front lightwell under entrance footbridge
Withdrawn Heritage and listed buildings New dwelling Extension -
21 Mornington Crescent London NW1 7RG
Two storey rear extension at lower and ground floor level and associated works and the reconfiguration of the internal layout.
Withdrawn Full applications Extension -
21 Mornington Crescent London NW1 7RG
Construction of an outbuilding to the rear of garden for the use as a studio office including associated landscaping. See planning permission application 2021/5608/P for associated plans and documents
Withdrawn Heritage and listed buildings -
Flat A 21 Mornington Crescent London NW1 7RG
96% historically approved · decision due ~2 Dec
Conversion of maisonette into two self contained flats at ground and lower ground with internal alterations, replacement of window with door and infill at lower ground floor and cycle storage to rear
Awaiting decision Heritage and listed buildings New dwelling Extension +1 1 doc
Other full applications
In Camden
-
2026/0369/P Granted
Railway embankment and land west of 49 Adelaide Road London NW3 3QB
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-
2026/3694/P Granted
19 Charterhouse Street London EC1N 6RA
Details pursuant to condition 19 (external lighting) of planning permission 2025/1683/P, granted subject to a legal agreement on 05/06/2026, for remodelling, refurbishment and extensions (including 3 additional storeys) of the existing building to provide Use Class E (commercial, retail/restaurant and jewellery workspace) and associated landscaping and facade works.
-
2026/3904/P Granted
14 Templewood Avenue London NW3 7XA
Details pursuant to Condition 5 (Tree protection measures) of planning permission 2026/2315/P dated 10/08/2026 for "Erection of an orangery/outbuilding in the rear garden."
-
2025/2002/P Granted
11 Doughty Street London WC1N 2PL
Change of use from office (Class E) to residential to form a single-family dwelling (Class C3); associated internal and external alterations
-
2026/3551/P Granted
19 Charterhouse Street London EC1N 6RA
Details pursuant to condition 21 (Details of gates/barriers onto Charterhouse Street) of planning permission 2025/1683/P, granted subject to a legal agreement on 05/06/2026, for remodelling, refurbishment and extensions (including 3 additional storeys) of the existing building to provide Use Class E (commercial, retail/restaurant and jewellery workspace) and associated landscaping and facade works.