Historic building recording was undertaken at No's 3-5 Round Church Street and the Cambridge Union in advance of extensive redevelopment. The former comprise three surviving examples from an original terrace of four two-storey houses with basements, which were constructed as part of a widespread phase of speculative development. They most probably date to the 1830s. The Cambridge Union itself was originally built in 1866 to a design by Alfred Waterhouse and is Grade II listed. It is the home of the Cambridge Union debating society. Proposed alterations to this building will involve the demolition of a number of elements including a late nineteenth-century toilet block and two 1930s squash courts, as well as the removal of a 1930s façade on Round Church Street and the reinstatement of the original Neo-Gothic design. In addition, two small-scale episodes of archaeological monitoring were also undertaken during the course of the recording, and these are also reported upon.