Multistory Office Building from the 60's

[Adam G.]

We are currently evaluating a multistory office building that was built in the mid 60's. The numbers seem to work well. We've primarily invested in much newer properties built in the late 90's forward so this would be the first time buying a building that old. Assuming the numbers work very well, is there a reason we shouldn't consider an office building that old? The elevator and mechanicals are in very good shape and the location is good.