23, Copthall Gardens, Twickenham, TW1 4HH Data via plota.co.uk
Proposal
Certificate of Lawful Development for the construction of a rear roof dormer and the installation of three rooflights to the front roof slope. Data via plota.co.uk
Application progress
This application is under consideration - no decision has been issued yet. Plota predicts a decision between 12 Nov 2026 and 20 Nov 2026, from Richmond upon Thames's recent extensions.
Site constraints 14
Checked on 1 October 2026. Historic England, the Environment Agency, Natural England 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 2
Last sold for £1,380,000 in May 2024. Terraced house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
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
- Section 192 Permitted Development
- Postcode
- TW1 4HH
- Received
- 28 Sept 2026
- Validated
- 30 Sept 2026
- Ward
- Twickenham Riverside Ward [TRW]
- Case officer
- Show
- Target decision
- 23 Nov 2026
- Applicant
- Show
- Agent
- Show
Decision outlook
Day 5 of the 56-day target. Richmond upon Thames usually decides extensions by day 48.
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-15245616
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.
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
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23, Copthall Gardens, Twickenham, TW1 4HH
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