After 1740, Adam built only two houses, Cumbernauld House for the Earl of Wigton, and Cally House for Alexander Murray, which was not complete until 1763. From 1746, Adam was acting as "Intendant General" and contractor, overseeing the building of Inveraray Castle to a Gothic design by Roger Morris. His role was to correspond with the architect on behalf of the client, Archibald Campbell, 3rd Duke of Argyll, and Adam also offered Morris his own advice on detail design. He also provided an early draft for the layout of the new town at Inveraray. His last architectural work was for Lord Lovat in 1744, for a new house at Castle Dounie. The stone was supplied, but construction never started as Lord Lovat was "out" in the Jacobite rising of 1745, and his property was sacked by government troops.