Michael Hill in the Dorset edition of The Buildings of England suggests that Sir James Thornhill may have been the architect.

[4] The House, which incorporates an earlier 16th century north wing, is three storeys high and seven bays wide and rendered in stone rubble and brick with a slate roof.

The staircase features a mural painted a year or two after the completion of the house by Sir James Thornhill,[5] which depicts the Greek mythological characters Meleager, Atalanta and the hunt for the Calydonian Boar.

By June 2006, Sherborne House was shrouded in scaffolding[12] and the Thornhill-designed mural was beginning to show signs of water damage.

In 2011, plans were announced to turn Sherborne House into a tourist attraction with an arts centre and restaurant.