The house, which is located in a 70-acre (28 ha) demesne approximately 2 miles (3 km) south-east of Sligo town, is a protected structure.

[1] The original name for the area is Annagh (Irish: Eanach), meaning "marsh", and was on land belonging to the Ó Conchobhair Sligigh Lords of the territory of Cairbre Drom Cliabh.

This area belonged to the O'Connors throughout the Medieval period before passing to the merchant Andrew Crean in the early 17th century, then to Lord William Strafford.

[6][7] In addition to the 14,500 acres (5,900 ha), the conveyance also included extensive property within the Borough of Sligo, together with the fairs, markets and tolls.

His daughter Murial and her husband Philip Dudley Percival then occupied the house, selling off the livestock and machinery until they left Hazelwood in 1923.

[citation needed] Although the sixth Owen Wynne died without male heirs, the wider family survived through the descendants of the fourth M.P.

[citation needed] In c.1969 it was sold again to the Italian manufacturing company SNIA S.p.A. to use as part of a nylon yarn factory complex which they built to the rear of the house.

The factory closed in 1983 and was acquired in 1987 by the South Korean company SaeHan Information Systems, who produced video tapes on the site until 2005.

The application was refused by Sligo County Council and the owners served with a notice to improve the fabric of the building to ensure its preservation.

[citation needed] Members of the community founded an action group, "Hazelwood Heritage Society", to campaign for the restoration of the house and its grounds.