Planning application
18 Dartmouth Street London SW1H 9BL
Works: Extension Loft or dormer Windows or glazing
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Rear infill of courtyard to create larger basement (no excavation required), installation of French window on the ground floor, installation of two conservation roof lights.
As published by the council, reference 25/05068/FULL
Application record
- Reference
- 25/05068/FULL
- Type
- Full Planning Permission Application
- Status
- Decided
- Decision
- Granted As published: Application Permitted
- Received
- 22 Jul 2025
- Validated
- 22 Jul 2025
- Decided
- 11 Sep 2025
- Ward
- St James's
- Decision by
- Delegated Decision
- Postcode
- SW1H 9BL
Site history
Applications at this address on the Westminster register
This site has had 2 applications since 2025: 2 approved, 0 refused.
-
25/08800/FULL Granted
18 Dartmouth Street London SW1H 9BL
Replacement windows, installation of two sunpipes to rear, air source heat pump, installation of two gas fire flues to rear, installation of mechanical extraction vents, installation of boiler flue to rear, rendering of the rear elevation, installation of lead capping to front elevation, removal of fire escape to rear and replacement with a new terrace and associated works.
Timeline
Dates from the published record
-
22 Jul 2025
Received by Westminster
-
11 Sep 2025
Decision issued: Application Permitted
-
21 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Chestnut Planning Agent, a planning consultancy
26 applications on PlanIndex · across 12 councils · 82% granted
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Plans, drawings, consultee responses and the officer's report
27 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.
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Open the documentsWhat this grant of permission means
Westminster granted permission on 11 September 2025, 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
-
18 Dartmouth Street London SW1H 9BL
Replacement windows, installation of two sunpipes to rear, air source heat pump, installation of two gas fire flues to rear, installation of mechanical extraction vents, installation of boiler flue to rear, rendering of the rear elevation, installation of lead capping to front elevation, removal of fire escape to rear and replacement with a new terrace and associated works.
Granted Full applications Windows or glazing 34 docs -
Broadway House 24-28 Tothill Street London SW1H 9NQ
Replacement of external rear fire escape staircase to rear elevation from basement to first floor.
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Development Site At 1-11 And 13-15 Carteret Street 40 Broadway London
87% historically approved · decision due ~5 Jan
Details of a supplementary acoustic report pursuant to condition 36 of planning permission dated 5th January 2024 (RN:22/05034).
Awaiting decision Full applications 4 docs -
Development Site At 1-11 And 13-15 Carteret Street 40 Broadway London
87% historically approved · decision due ~5 Jan
Detailed Delivery and Service Plan pursuant to condition 14 of planning permission dated 5th January 2024 (RN:22/05034).
Awaiting decision Full applications 4 docs -
Development Site At 1-11 And 13-15 Carteret Street 40 Broadway London
Detailed drawings showing the following alteration(s) to the scheme provision of living roofs to all roofs not used as terraces or roof plant areas, provision of bird and bat boxes and details of a biodiversity management plan in relation to the living roofs pursuant to condition 31 and 32 of planning permission dated 5th January 2024 (RN:22/05034/FULL)
Refused Full applications 11 docs -
Development Site At 1-11 And 13-15 Carteret Street 40 Broadway London
Details of waste and recycling storage pursuant to condition 19 of planning permission dated 05 January 2024 (RN: 22/05034/FULL).
Granted Full applications 12 docs
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