I don't think Pville would be the place for Beta to expand, unfortunately...I've heard great things about you guys! We have quite a few fraternities right now:
Sigma Phi Epsilon
Tau Kappa Epsilon
Sigma Pi
Phi Sigma (local)
Lambda Sigma Pi (local)
Alpha Gamma Rho
Sigma Tau Gamma
FarmHouse
Delta Sigma Phi
Phi Mu Alpha Sinfonia
The houses range in size from 10 - 50, I believe Sig Ep and TKE are tied for the largest. Sig Ep just came to campus about 5 years ago, they received their charter in 2000. We're really looking to expand on the women's side, if at all, because Gamma Phi is the only national right now, and we then have 2 locals and CERES.
Good luck with expansion, though!