78 London Road Knebworth Hertfordshire SG3 6HB Data via plota.co.uk
Proposal
Single storey rear extension. Alterations to existing garage including insertion of front window following removal of garage door and raising roof to facilitate garage conversion. Erection of open-sided front porch and pitched roof above existing front bay window. Data via plota.co.uk
Application progress
Approved on 18 Sept 2026 · Delegated · Last checked 25 Sept 2026
Site constraints 2
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 £580,000 in February 2026. 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 February 2025, the latest held for this property. The building may have changed since. View the certificate
Every application in North Hertfordshire - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- North Hertfordshire
- Application type
- Full Permission Householder
- Postcode
- SG3 6HB
- Received
- 6 Aug 2026
- Validated
- 6 Aug 2026
- Ward
- Knebworth Ward
- Parish
- Knebworth Parish Council
- Case officer
- Show
- Target decision
- 1 Oct 2026
- Decision
- Conditional Permission
- Decision date
- 18 Sept 2026
- Decision level
- Delegated
- Applicant
- Show
- Agent
- Show
How this decision compares
Decided in 43 days from validation, 6 days faster than North Hertfordshire's median of 49 for extensions. Approved, as 92% of extensions here are.
Plota live figures for extensions decided by North Hertfordshire in the last twelve months, from validation. North Hertfordshire decision record →
Public comments
No public comments yet.
5 neighbours consulted · Last counted 25 Sept 2026
Consultation & key dates
- Alt. reference
- PP-15103666
- Planning Portal ref
- PP-15103666
- Comments by
- 5 Sept 2026
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
North Hertfordshire ranks #128 out of 296 councils for householder decision speed. Householder applications are slightly more likely to be approved here (95%) 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.
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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78 London Road Knebworth Hertfordshire SG3 6HB
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