34, Marksbury Avenue, Richmond, TW9 4JF Data via plota.co.uk
Proposal
Erection of a single-storey rear extension, to replace existing rear conservatory, to extend 5.86m beyond the rear wall of a semi-detached house, with an eaves height of 3.0m and a maximum height not exceeding 4m. Data via plota.co.uk
Application progress
Approved on 14 Jul 2026 · Delegated Decision · Last checked 17 Jul 2026
Site constraints 3
Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, 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.
Sales history 1
Last sold for £1,270,000 in December 2025. Semi-detached house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Building
From the energy performance certificate lodged in October 2020, 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
- General Permitted Development Extension
- Postcode
- TW9 4JF
- Received
- 15 Jun 2026
- Validated
- 15 Jun 2026
- Ward
- Kew Ward [KWW]
- Case officer
- Show
- Target decision
- 27 Jul 2026
- Decision
- GPD Extension Conditional
- Decision date
- 14 Jul 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Studio Werc Ltd
How this decision compares
Decided in 29 days from validation, 19 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-15008501
- Statutory expiry
- 8 Jul 2026
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
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.
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
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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34, Marksbury Avenue, Richmond, TW9 4JF
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