40 Cornelian Street, Blackburn, Blackburn With Darwen, BB1 9AW Data via plota.co.uk
Description
Erection of single storey extension to rear. 4.5m from original rear wall, Max Height: 3.1m, Height to Eaves: 2.350m Data via plota.co.uk
Last checked
Decision outlook
Plota predicts a decision around 20 Nov 2026, from Blackburn's recent extensions.
Day 6 of the 56-day target. Blackburn usually decides extensions by day 53.
Plota live figures for extensions decided by Blackburn in the last twelve months, from validation. Blackburn decision record →
Site constraints 1
Checked on 3 October 2026. 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 3
Last sold for £145,000 in September 2022. Terraced house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Every application in Blackburn - and every UK council - as a live feed, an API, or a bulk CSV export.
Nearby new applications
18 Royal Oak Avenue, Blackburn, Blackburn With Darwen, BB1 8QD
Proposed partial demolition of existing garage and construction of extended gara...
8 Regents View, Blackburn, Blackburn With Darwen, BB1 8QQ
Erection of double storey side extension to join and incorporate existing garage
Historical activity at this location
4 nearby applications on record - archival context, not part of the live application.
Nearby activity
Blackburn is faster than most councils at deciding householder applications, ranking #90 out of 296. Householder applications are more likely to be approved here than most councils, with a 98% approval rate vs 90% nationally.
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.