Mamre House was built c1820 and was the home of colonial chaplain, magistrate the Reverend Samuel Marsden. The homestead is a two storey brick (now rendered) building in the Colonial Georgian style. It has a hipped corrugated iron roof laid over the original timber shingles.
The plan of the house is rectangular, with a central stair hall, eleven rooms and a single storey kitchen wing to the southern side. Two brick chimneys are located in each end hip.
It was the working farmhouse of a busy rural farm which included orchards, exotic pasture and other crops.
Samuel Marsden, in his work at Mamre farm, pioneered the Australian wool industry by importing and breeding the famous Merino sheep.