Planning application
Garden Flat 25 Lancaster Grove London NW3 4EX
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Erection of a garden room at rear
As published by the council, reference 2025/5477/P
Application record
- Reference
- 2025/5477/P
- Type
- Full Planning Permission
- Status
- Final Decision
- Decision
- Granted
- Received
- 2 Dec 2025
- Validated
- 4 Dec 2025
- Decided
- 14 May 2026
- Ward
- Belsize
- Decision by
- Delegated
- Postcode
- NW3 4EX
Site history
Applications at this address on the Camden register
This site has had 3 applications since 2025: 1 approved, 0 refused.
-
2026/3432/P Awaiting decision
Garden Flat 25 Lancaster Grove London NW3 4EX
Green roof details and tree protection details required by conditions 3 and 4 of planning permission reference 2025/5477/P granted 14/05/2026 for the erection of a garden room at rear.
-
2026/3587/06BGP Awaiting decision
Garden Flat 25 Lancaster Grove London NW3 4EX
Biodiversity Gain Plan (BGP) required by planning permission reference 2025/5477/P granted 14/05/2026 for the erection of a garden room at rear.
Timeline
Dates from the published record
-
2 Dec 2025
Received by Camden
-
4 Dec 2025
Validated
Checked as complete and ready for consideration.
-
14 May 2026
Decision issued: Granted
-
9 Aug 2026
Added to PlanIndex
Related applications
Cases linked to this one on the register
2 later applications on the register refer to this one:
-
2026/3432/P Awaiting decision
Garden Flat 25 Lancaster Grove London NW3 4EX
Green roof details and tree protection details required by conditions 3 and 4 of planning permission reference 2025/5477/P granted 14/05/2026 for the erection of a garden room at rear.
-
2026/3587/06BGP Awaiting decision
Garden Flat 25 Lancaster Grove London NW3 4EX
Biodiversity Gain Plan (BGP) required by planning permission reference 2025/5477/P granted 14/05/2026 for the erection of a garden room at rear.
Documents
Plans, drawings, consultee responses and the officer's report
16 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.
Trade members open them from here.
Open the documentsWhat this grant of permission means
Camden granted permission on 14 May 2026, 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
-
25 Lancaster Grove London NW3 4EX
Change of use from six self-contained flats to a single-family dwellinghouse (Class C3).
Refused Full applications New dwellingDomestic -
25 Lancaster Grove London NW3 4EX
Single storey rear extension to lower ground floor; creation of a rear roof terrace to ground floor flat; enlargement of lower ground floor unit to a 3 bed flat and ground floor unit to a 2 bed flat; additional side windows at lower ground floor level and associated works.
Granted Full applications Extension Windows or glazingSmall domestic -
Garden Flat 25 Lancaster Grove London NW3 4EX
91% historically approved · decision due ~15 Oct
Green roof details and tree protection details required by conditions 3 and 4 of planning permission reference 2025/5477/P granted 14/05/2026 for the erection of a garden room at rear.
Awaiting decision Full applications Trees 11 docs -
Garden Flat 25 Lancaster Grove London NW3 4EX
94% historically approved · decision due ~15 Oct
Biodiversity Gain Plan (BGP) required by planning permission reference 2025/5477/P granted 14/05/2026 for the erection of a garden room at rear.
Awaiting decision 5 docs -
25 Lancaster Grove London NW3 4EX
Proposed conversion of 1no. one-bedroom flat and 1no. studio flat into 1no. two-bedroom flat at first floor level.
Granted Full applications -
25 Lancaster Grove London NW3 4EX
Conversion of lower ground floor and ground floor flats (1 x 1 bed and 1 x 2 bed) to a 4 bed maisonette and erection of single storey lower ground floor rear extension.
Granted Full applications New dwelling ExtensionSmall domestic
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2026/2516/P Withdrawn
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2026/3830/P Awaiting decision
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-
2026/3282/P Granted
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-
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”
-
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.