To build or not to build

[Mike Grabowski]

Hey guys, first time poster. I have city lot just outside of Guelph Ontario. About 48' of frontage and about 100' deep.  Probably worth about 120-150k. Not sure if I should build on it or sell? It is an eclectic street with homes selling between 300 and as high as 650k. I am assuming it would cost 150-200 / sq ft to build but I have not approached a builder. Currently I could get 65% of the land value for financing, 80% if I am lucky. Any thoughts on the best\most profitable path?