What I find interesting is the house in question is nothing exciting. Google maps shows it to be a simple ranch style that apparently was too small so the garage was enclosed. Wouldn't you expect a high ranking CIA official to live in a much nicer house?
Perhaps 46 - 50 years ago, it was more of the norm. He retired 26 yrs ago. Salaries werent as high then, and people tended to live within their means