2 and 2A, River Grounds Manor, St Peters Road, Twickenham, TW1 1QX
Proposal
Alterations to the existing dwellinghouse, including replacement of the existing pitched roof of the central ridge with a mansard roof with rooflights and four dormer windows, replacement and enlargement of the openings on the front elevation, replacement of front door, porch and staircase, addition of decorative metal balustrading to the front balconies, alterations to an existing enclosure, removal of rear parapet wall at roof level, erection of porch extensions to the rear terrace, replacement of full height glazing at the rear of the lower ground floor with French doors, replacement rear staircase, together with removal of the swimming pool and an erection of a garden room in the rear garden, alterations to the front boundary walls and rear gate as well as associated landscaping to the front and rear.
- Received
- 17 July 2025
- Decided
- 18 September 2025 · Granted Permission
- Decision level
- Delegated (officer decision)
- Ward
- St. Margarets & North Twickenham Ward [SMN]
Boundary © HM Land Registry, © Ordnance Survey · details
This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.
- ReceivedSubmitted17 Jul
- ValidatedValidated23 Jul
- Consult.Consultation21 Aug
- TargetTarget Date17 Sep
- DecidedDecided18 Sep
Decided in 57 days (council typically 49)
This is a full planning application for a dormer extension at 2 and 2A, River Grounds Manor, St Peters Road, Twickenham, TW1 1QX. Richmond has handled 4,052 applications of this type and approves 82% of them, typically deciding them in 57 days. This one was decided in 63 days, 6 days longer than Richmond's median. The site is in the St Margaret's Estate conservation area. There are no previous applications recorded at this address. In the past year there have been 205 applications across St. Margarets & North Twickenham Ward [SMN]. We hold 1,443 applications in total for the TW1 postcode area.
Application Details
Applicant & Agent
Planning Application Dates
Planning Decision
Publicity
Appeal
Additional Information
Source: Richmond
Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.
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Associated applications
- 20264 Aug
Non material amendment to planning reference PA25/2481
ApprovedNon-material amendmentAmendmentPA26/2704 - 202523 Dec
Details pursuant to conditions 1 - low transmission glass and 4 - external materials of planning approval…
ApprovedDischarge of conditionsPA25/4579 - 202517 Jul
Alterations to the existing dwellinghouse, including replacement of the existing pitched roof of the central…
This applicationApprovedFullPA25/2481
Planning history at this site
1 other application at this property, newest first.
Planning constraints
Designations that overlap or adjoin the site outline.
- Flood zone 3: High probability (rivers and sea)
- Conservation area: St Margaret's Estate
Not published by this council, so not checked: Article 4 directions. Ask the council if these matter.
Possibly incomplete for this council: tree preservation orders.
Also checked, none recorded (21)
flood storage areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.
A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.
Data © Crown copyright and others · sources and licences
Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.
© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-10-09. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.
© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.
© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.
Contains Ordnance Survey data © Crown copyright and database right 2026.
Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.
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