In August 1814 Suttor was given the position of superintendent of the lunatic asylum at Castle Hill with a salary of £50; in February 1819 he was dismissed from this position on charges he used lunatic labour on his farm. Suttor again took up land, and in 1822 he moved to beyond the Blue Mountains to the newly settled lands on the Bathurst plains. There he established the 'Brucedale Station' at the junction of Winburndale and Clear Creeks, which turned out to be a successful landholding leading to great prosperity, and by the 1830s it had been expanded to . During a time of great conflict with the Indigenous Australians of the Wiradjuri nation, who resisted the taking of their lands, Suttor and his family (in particular son William) established good relations with the aborigines. They were known to have been close to the Wiradjuri's warrior leader Windradyne, and when Windradyne died he was buried at Brucedale. Nine years later Suttor was living on the Baulkham Hills property, and he also built a house at Sydney. Suttor visited England and Europe in 1839–45 and was elected a fellow of the Linnean Society of London. Suttor published a volume on "The Culture of the Grape-Vine and the Orange in Australia and New Zealand" (1843), and the "Memoirs Historical and Scientific of the Right Honourable Sir Joseph Banks" (1855, reprinted 1948). Suttor married Miss Sarah Maria Dobinson (his childhood sweetheart) in 1798 and founded a distinguished Australian family. He died at Bathurst on 5 May 1859; Mrs Suttor had died in 1844, but five sons and three daughters survived their father. A park in Baulkham Hills is named after him.