Trevor Square is at the southern end of Trevor Street. It is a small square with a communal garden in the middle.
The houses are mainly three- and four- storey Georgian houses (plus basement). At the southern end of the square is the old Harrods depositary building recently converted into flats. No. 38 at the north west corner of the square is a particularly imposing double fronted house painted in a rather unusual shade of pink.
The square is extremely convenient for the shops in Knightsbridge and Hyde Park. The central garden square has many mature trees.