9A Rosebery Avenue Harpenden Hertfordshire AL5 2QT Data via plota.co.uk
Proposal
Discharge of Condition 15 (bio diversity net gain) of planning permission dated 01/09/2025 for Demolition of existing semi-detached duplex properties and construction of two, three bedroom semi-detached houses with attic accommodation with as… Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. A decision is expected by 7 Nov 2025.
Associated applications 2
Part of
Conditions 15 awaiting decision
- ConditionsDischarge of Condition 15 (bio diversity net gain)This application5/2025/1661
Site constraints 4
Checked on 12 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, 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 3
Last sold for £694,500 in February 2023. Flat or maisonette, leasehold.
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 August 2023, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate
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Important details
Consultation & key dates
- Alt. reference
- 317115PLN
- Planning Portal ref
- 14314189
- Comments by
- 7 Nov 2025
- Statutory expiry
- 2 Dec 2025
Historical activity at this location
27 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
St Albans is one of the slowest councils in England for householder decisions, ranking #285 out of 296. The council extends the time limit on 64% of applications - one of the highest rates in England. Expect your application to take longer than the standard deadline. Householder applications are slightly less likely to be approved here (88%) 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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9A Rosebery Avenue Harpenden Hertfordshire AL5 2QT
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Referenced application
Council archive
9A & 9B Rosebery Avenue Harpenden Hertfordshire Al5 2Qt
Demolition of existing semi-detached duplex properties and construction of two, three bedroom semi-detached houses with attic accommodation with associated landscaping works and widening of existing vehicle crossover
- Received
- 19 Dec 2024
- Decided
- 7 May 2025
- Outcome
- Approved
The consultation period closed on 7 Nov 2025.