After Mudie was able to acquire roughly of land (809 hectares) in 1825, an expansion on the land he already owned on Castle Forbes, he – with the assistance of numerous convicts and an overseer, John Larnach – was able to turn his land into one of the best, most-productive agricultural establishments in the colony at the time. Selling produce and such commodities as meat, wheat and wool, Mudie was often known to boast how well guarded his 'fortress' at Castle Forbes was, and how all of his servants and guards exacted justice with strict adherence to his rules.