The typical cost per square metre for constructing an extension or conservatory is around Â£1,500 to Â£2,000 on average; another reason why a garage conversion is one of the most popular options for many people.he typical cost per square metre for constructing an extension or conservatory is around Â£1,500 to Â£2,000 on average; another reason why a garage conversion is one of the most popular options for many people.
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From Wikipedia, the free encyclopedia. Wilsonville is a town in southeastern Shelby County, Alabama, United States, located northeast of Columbiana. At the 2010 census the population was 1,867. Wilsonville is named after the earliest settler in the area, Elisha Wilson. The town was incorporated in 1897. 3 years later in 1900, it had the distinction of being the largest community in Shelby County with 1,095, edging out the county seat of Columbiana by 20 people.