Richard trained as an architect in London.[2] In 1757 he became a partner in the family firm, which took the name Robert Gillow & Son. He continued to undertake architectural work, including Lancaster's Custom House of 1764. The building has been described as "a notable and complete example of an eighteenth-century custom house, of Palladian design".[3]
1 Castle Hill c.1770, former offices and workshops of the Gillow firm in Lancaster. Probably designed by Richard Gillow[3]
Richard and his wife Sarah had eight children, five daughters and three sons; Robert [iii] Gillow; George [ii] Gillow; and Richard [iii] Gillow, all joined the family firm.[4]