Tay Square is the present-day location of The Rep theatre. It stands to the west of South Tay Street, which runs north from Nethergate to the junction with Overgate to the east and West Port to the west.
It is impossible to date this photograph by Alexander Wilson as not only are there no visible names, but there was very little change of ownership over a considerable time span anyway. No 9. (the house behind the central tree!) was home to James H. Laing.
No. 10 belonged to David Ogilvy, tailor, and No. 11 is listed in the Dundee Directory as Peter Steven FRCSE, a surgeon. The photographer set up in front of Tay Square United Free Church (ministered to by Rev. Robert Lang), looking north.