Preston City Council successfully prosecuted Amaan Properties Limited for breaching a planning enforcement notice at 68 Fishergate.
The property, located within the Fishergate Hill Conservation Area, is subject to rules that protect properties’ historic character.
Amaan Properties installed uPVC windows without planning permission.
The council issued an enforcement notice in May 2024, requiring the windows to be replaced with timber-framed versions matching the originals.
No appeal was lodged, and the company failed to engage with council officers.
Legal proceedings began in July 2025, with prosecution proceedings approved by the court in October 2025.
The case was heard at Blackburn Magistrates’ Court on March 18.
A representative from Amaan Properties Limited did not attend the hearing.
The court allowed proceedings to continue in the company’s absence.
Amaan Properties Limited was found guilty and fined £5,000.
The company was also ordered to pay a £2,000 victim surcharge and cover the council’s legal costs.
The council has reminded property owners to seek advice before undertaking work in conservation areas.
Chris Hayward, director for development and housing at Preston City Council said: “The council is committed to taking firm and proportionate enforcement action against unacceptable unauthorised development.
“Conservation areas are designated to preserve and enhance their special architectural and historic interest, and we will take appropriate action where these protections are ignored.
“The council continues to encourage property owners to seek advice before carrying out works to ensure compliance with planning legislation and to help safeguard the character and appearance of the city’s conservation areas.”