I think this is an incomplete church, where the congregation never completed the upper stories. But research does not reveal any explanation about what this was. Records say that the F. W. Caspar & Co. was at this intersection in 1906. Which corner? I suspect this might have been a Christian Scientist church, judging from the buff brick, as is common in a whole string of similar churches around the city built in the early Twentieth Century (examples here and here). The city database lists 1950, which is clearly the date of a renovation or alteration, not construction.