It's a lil different story when:
1) you don't own the house and no house corp is involved (everyone signed individual leases directly with the landlord)
2) you don't do ritual or formal rush at the house anyway since it's too small.
In our case, we just let the women know that there were times they'd have to be out of the house (or stay in their rooms) for big-little, open rush parties etc. It worked out alright - they both had practically fulltime jobs on top of school and were gone a lot anyway. My mom's BFF's son was a boarder at a house at Penn State though - quite different affair than our little shacks - and I never did know just how that would work out.
I could have sworn during the DePauw/DZ brouhaha it said they had boarders, although I may still not be fully awake and just imagining that one.