Harper's Mansion, Georgian mansion in Berrima, Australia.

Harper's Mansion is a Georgian-style house in Berrima built from red clay brick and locally sourced sandstone, sitting prominently on a hilltop with formal gardens spanning about 2 acres. The two-story structure features symmetrical facades and is set within professionally maintained grounds.

James Harper bought the 100 acres at Berrima in 1834 and built the house most likely in 1835–36, using 100,000 clay bricks made on-site and locally quarried stone. Harper died in 1845 in financial difficulty; his mortgagee William Hutchinson took possession in 1846. The Catholic Church bought the house in 1856 and owned it until 1970, using it as a presbytery until the 1880s.

The Georgian design reflects skilled colonial craftsmanship through original woodwork, decorative plasterwork, and detailed ceiling ornamentation. These elements showcase the building methods and artistic practices of the period that shaped local construction traditions.

The house welcomes visitors on specific days, so checking opening times before your visit is helpful for planning. Access involves walking up a tree-lined driveway to reach the building, and comfortable walking shoes are practical for navigating the grounds and uneven pathways.

The maze at the rear of the house was created by landscape designer Michael Jackman, who leased the property from 1999 to 2006 and lived there. It stands where paddock once was, part of a garden laid out in 1999 to evoke an 1830s planting scheme.