Harry and Ernest Sidgreaves established a modest retail shopfitting workshop in Sydney's Surry Hills in 1917 and were later joined by their father John and youngest brother Harold. They moved their factory to Redfern in the early 1920's where the company carried on business until 1984 when it relocated to Silverwater. In 2005, the Company redeveloped an old character building to establish its larger and more contemporary offices in Annandale where it remains today. Bryan Sidgreaves joined the company in 1957, became a Director on the death of his father, Harold, in 1963 and later Managing Director. In 1991 the family tradition continued when Louise and Michael, the fifth generation, joined the company becoming Directors in 1996 and Managing Directors in 2003.

Throughout the 90+ year history of the Company, Sidgreaves has specialised in all areas of interior refurbishment from major department stores, specialty retailers, financial institutions and commercial offices through to hotels, clubs and pharmacies. The Company portfolio covers highly successful projects that encompass all aspects of interior design, project management and interior construction.