[3] Much of McCoy's work was Brutalist, though his awareness of the historic styles within Dunedin led him to create buildings which echoed history as well as presenting the modern.
This was perhaps most noteworthy in the sanctuary of Dunedin's St Paul's Cathedral, where a modern addition was created for a much older structure.
[3] McCoy and his wife Nola had 13 children, two sons and 11 daughters, four of whom followed him into architectural design,[4] as has one of their 20 grandchildren.
[3] In 2016, the New Zealand Institute of Architects inaugurated the Ted McCoy Award, to be presented annually, for design of education facilities.
[12] McCoy worked with photographer Gary Blackman on the book Victorian City of New Zealand (John McIndoe Ltd, Dunedin, 1968).