A "bachelor pad" refers to a home or apartment where a single man lives. It typically implies that the place is designed or decorated to suit the tastes and lifestyle of an unmarried man. Full definition
I'll put him in the basement bachelor pad with my parents. (remonline.com)
This modern tiny house is filled with treasures obtained over a lifetime of adventure, and may just be the ultimate bachelor pad. (livingbiginatinyhouse.com)
You could find a cheap bachelor pad like house that would probably cost a little more than rent which would be a good step up in quality of life and owning a home. (money.stackexchange.com)