Flax House is a five storey Victorian building with red brick, warehouse style construction, located on Adelaide Street in the Linen Quarter of Belfast. Originally home to handkerchief manufacturer, McBride & Williams, the warehouse building was designed by Young & Mackenzie and built in 1906-7. Straidorn Properties acquired 83-91 Adelaide Street in 2016 after it had been derelict for 30 years.
The refurbished and fully extended Flax House now offers five storeys of exceptional grade-A office space, with each floor plate typically configured to provide around 5597 sq. ft. lettable space. Underfloor air conditioning, with full underfloor supply, and underfloor return air was specified so that the warehouse loft ceilings could be left exposed, highlighting the retained features and building characteristics.
Flax House is the second building on Adelaide Street to make use of plenum air conditioning. A total of 11 CAM-C downflow units and 128 TU4 Fantiles were supplied for the five storey building. Completed in 2018, the building is now fully let, each floor with a different tenant, and the businesses include the modern, tech-focused firms which the developer has looked to attract.