1 Sish Close Stevenage Herts SG1 3LT Data via plota.co.uk
Proposal
Lawful Development Certificate (Existing) for a Two storey side and rear extension Data via plota.co.uk
Application progress
Approved on 25 Aug 2026 · Delegated Decision · Last checked 28 Aug 2026
Documents 9
Decision & officer reports 2
Plans & drawings 3
Application forms 1
Site constraints 3
Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) 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 £245,000 in December 2011. 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 June 2011, 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 Stevenage - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Stevenage
- Application type
- Cert. of Lawful EXISTING use
- Postcode
- SG1 3LT
- Received
- 28 Jul 2026
- Validated
- 29 Jul 2026
- Ward
- Almond Hill
- Case officer
- Show
- Target decision
- 23 Sept 2026
- Decision
- Certificate of Lawfulness Approved
- Decision date
- 25 Aug 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Sophie Cairns
How this decision compares
Decided in 27 days from validation, 25 days faster than Stevenage's median of 52 for extensions. Approved, as 90% of extensions here are.
Plota live figures for extensions decided by Stevenage in the last twelve months, from validation. Stevenage decision record →
Public comments
No public comments yet.
Last counted 28 Aug 2026
Consultation & key dates
- Alt. reference
- PP-15116258
- Planning Portal ref
- PP-15116258
- Statutory expiry
- 23 Sept 2026
- Env. assessment
- No
Historical activity at this location
4 nearby applications on record - archival context, not part of the live application.
Nearby activity
Stevenage is faster than most councils at deciding householder applications, ranking #36 out of 296. Only 16% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Householder applications are slightly more likely to be approved here (96%) 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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1 Sish Close Stevenage Herts SG1 3LT
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