12 Avenue St Nicholas Harpenden AL5 2BX Data via plota.co.uk
Proposal
Rear roof extension comprising 3 related dormers Data via plota.co.uk
Application progress
This application is under consideration - no decision has been issued yet. Plota predicts a decision between 7 Dec 2026 and 31 Dec 2026, from St Albans's recent extensions.
Site constraints 4
Checked on 1 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 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 £1,850,000 in March 2020. Detached house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Every application in St Albans - and every UK council - as a live feed, an API, or a bulk CSV export.
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Tables 11, Chairs 34, Umbrellas 1
Important details
Decision outlook
Day 5 of the 56-day target. St Albans usually decides extensions by day 81.
Plota live figures for extensions decided by St Albans in the last twelve months, from validation. St Albans decision record →
Consultation & key dates
- Alt. reference
- 324186PLN
- Planning Portal ref
- 15188280
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.
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12 Avenue St Nicholas Harpenden AL5 2BX
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