Buying half of a Duplex?

[Chanté Owens]

Hi BP Contributors!

I had a question about something I've seen posted a few times about people purchasing 1/2 of a Duplex. Is that common? I thought in general, that when purchasing a Duplex it was for both sides, but since I've seen comments contrary to that, I'm wondering if it may be area/region specific, or if you could purchase 1/2 a Duplex anywhere?

My apologies for such a strange question, but I've been curious about this for awhile.

Thanks in advance for any responses!