17 Sandringham Avenue, Raynes Park, Merton, SW20 8JY Data via plota.co.uk
Proposal
Application for a lawful development certificate in respect of the proposed erection of a single storey rear extension with flat roof, two rooflights and aluminium sliding doors, including demolition of existing conservatory. Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. Plota predicts a decision around 29 Oct 2026, from Merton's recent extensions.
Documents 13
Statements & assessments 2
Plans & drawings 9
Application forms 1
Other documents 1
Site constraints 5
Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. 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 £386,500 in July 2006. Terraced 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 December 2023, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate
Every application in Merton - and every UK council - as a live feed, an API, or a bulk CSV export.
Other new applications on this street
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Important details
Decision outlook
Day 62, past the statutory target. 78% of extensions in Merton are decided within thirteen weeks, which runs to 27 Nov 2026; extensions of time are common, and the council need not decide on the day. Last seen undecided on 28 Oct 2026.
Plota live figures for extensions decided by Merton in the last twelve months, from validation. Merton decision record →
Consultation & key dates
- Comments by
- 6 Oct 2026
- Statutory expiry
- 23 Oct 2026
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
Merton ranks #196 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (92%) than the national average (90%).
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
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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17 Sandringham Avenue, Raynes Park, Merton, SW20 8JY
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The consultation period closed on 6 Oct 2026.