From The Napoleon-Series Organization website, (4) Fortification on Property of Robert Gouie (links added below):
The trading establishment of Robert Gouie was located along the Detroit River on lot 76. *Lieutenant John Anderson...supervised construction of a small picketed fort here. The fort was manned by about 250 men and two artillery pieces starting on 7 August 1812 and was evacuated and burned on 11 August 1812.
This site located upriver from Crawford Avenue was later developed as a salt mine with rail access. Later the site was the location of the CKLW broadcast station.
From a Missouri resident's memoir:
"After leaving Fort Erie we arrived at Detroit, eight days out in the latter part of August. I [Judge Watson] remained with my uncle Robert Gouie Watson in Detroit one year. My uncle had a small trading establishment on the British side opposite Detroit, and he sent me over there to take charge of it."
Did Robert Gouie own property on both sides of the Detroit River?
*Lt. Anderson, 1 lt. 19 inf., was taken prisoner 16 Aug 1812 [Hull's Surrender of Detroit]