Hospitalfield House in Arbroath has been awarded £500,000 by Historic Scotland.
Culture Secretary Fiona Hyslop announced the funding part of a £1.5 million package to repair seven historic buildings across the country during a visit to Hospitalfield.
She said: “We are incredibly lucky in Scotland to have a built heritage which is the envy of the world. By investing in these important buildings, we are not just ensuring the protection of these vital, tangible connections to our past but also ensuring that they play a prominent role in the future of their communities.
“Hospitalfield is a great example of a site which has served a range of purposes throughout its long and distinguished history and now, thanks to the support of Historic Scotland, Creative Scotland and others, a new chapter in its history can be opened.
“I’m sure that Hospitalfield will serve as a cultural hub for the people of Angus for many years to come.”
The funding, from the building repair grants scheme, is targeted at the owners of buildings of special architectural or historical interest to meet the cost of high-quality repairs, using traditional materials and specialist craftsmen and conserving original features.
The trust that runs the house is planning an £11 million project to restore it and improve its facilities.
The house has its origins as a medieval hospital, serving pilgrims visiting Arbroath Abbey.
In the 1800s it was part of the country estate of the Fraser family and, when artist Patrick Allan married the heir to the estate, Elizabeth Fraser, the couple began their decades-long work to remodel the house and accumulate important collections of Victorian painting, sculpture and furniture.
The house and gardens will be open to the public on September 6 and 7 for Open Doors Day.