12 Martingales Close Ham Richmond TW10 7JJ Data via plota.co.uk
Proposal
Ground floor rear extension, front porch, first floor front extension and new roof to existing garage Data via plota.co.uk
Application progress
Approved on 3 Jul 2026 · Delegated Decision · Last checked 13 Jul 2026
Site constraints 16
Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Building
From the energy performance certificate lodged in September 2025, the latest held for this property. The building may have changed since. View the certificate
Every application in Richmond upon Thames - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Richmond upon Thames
- Application type
- Householder Application
- Postcode
- TW10 7JJ
- Received
- 28 May 2026
- Validated
- 29 May 2026
- Ward
- Ham, Petersham & Richmond Riverside Ward [HMP]
- Case officer
- Show
- Target decision
- 10 Jul 2026
- Decision
- Granted Permission
- Decision date
- 3 Jul 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Square One Architects Ltd
How this decision compares
Decided in 35 days from validation, 13 days faster than Richmond upon Thames's median of 48 for extensions. Approved, as 86% of extensions here are.
Plota live figures for extensions decided by Richmond upon Thames in the last twelve months, from validation. Richmond upon Thames decision record →
Consultation & key dates
- Alt. reference
- PP-14937930
- Statutory expiry
- 19 Jun 2026
Historical activity at this location
26 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
Richmond upon Thames ranks #130 out of 296 councils for householder decision speed. Richmond upon Thames is also one of the strictest councils - it refuses more householder applications than almost any other, with only 82% approved vs 90% nationally.
Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.
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12 Martingales Close Ham Richmond TW10 7JJ
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