 Among several buildings in and around Twickenham, John James designed St. Mary's Church after it collapsed in 1713 (with the exception of its surviving west tower).Also in south-east London, James designed Wricklemarsh, "a pioneer Palladian mansion" (Colvin) and in fact his only Palladian-style structure, for Sir Gregory Page in 1723.He was also probably the architect for the building now known as Ranger's House, Blackheath, London (c.1722–23).