William Curtis Green was born at Alton, Hampshire in 1875 and educated at Newton College, Newton Abbot, followed by West Bromwich Technical School and Birmingham School of Art 1892-94. In 1894 he moved to London as assistant first to George Thomas Hine, then to John Belcher 1895-97, and finally to Henry Thomas Hare before commencing practice on his own account in 1898. This enabled him to study at the Royal Academy schools, followed by travel in Italy, Germany and France. His appreciation of MacLaren’s work is shown by his sketch of 22 Avonmore Road, Kensington (The Builder, 1888  see Journal Volume 12).  In 1912 Curtis Green accepted Dunn's invitation to join his partnership with Watson, the practice becoming Dunn, Watson & Curtis Green.

Before the partnership dissolved in 1916, Curtis Green was involved in its work in Fortingall, including at Glenlyon House, the New Cottages, and the reredos in Fortingall Church in memory of Sir Donald Currie.  In 1928 he was involved in the Dundee Garden City project off the Kingsway.  In 1935 he designed the Molteno Memorial Hall in Fortingall for Currie’s daughter and her husband.  This, the last of the Currie family’s developments in Fortingall, has a magnificent scissor beam roof. He is best known in England for designing the façade of the Dorchester Hotel in London.

He died in 1960.