At my campus, there are only two fraternities that have a house. The Sig Eps have an old school that has been converted into a house and is absolutely huge! Unfortunately it is about two miles from campus, and they have a hard time keeping it filled. Alpha Phi Alpha is the only group that actually has a house on campus. They have our old President's House, which sounds more impressive than it is. Its just a 50's ranch that holds about eight people. It has a great setting on the lake though.
The city has also enacted zoning ordinances that basically prohibit any type of fraternity/sorority housing in city limits. The Sig Eps are grandfathered in, but the city tried to screw them over when they got the school. Their old house was the oldest brick building in the state of Illinois (built in 1820). The city received a grant from the State to purchase, restore, and turn the house into a museum. The city then worked out a deal to let the Sig Eps have the school. The school though, had been the elementary school for the African-American community when the schools were segregated. It is the only segregated school building left in Madison County, so the NAACP and the Urban League wanted to turn it into a community/cultural center. The city basically ticked these groups off when they let the Sig Eps take possession. However, the city dragged the building and occupancy permit stage out forever, so the chapter didn't get to actually move in until almost a year after the initial projected occupancy date. The city was hoping that the chapter would default on its mortgage and then the house could be turned into the community/cultural center. Then the city would have had a win-win situation. A new house museum paid for with state money, a new community center, and no annoying fraternity house to bother with.
There is a lot of interest from the students for Greek housing on campus, but virtually none from our upperlevel administrators. I know the issue has been brought up at our University's Chancellor's Council, and was soundly rejected by the Chancellor and Vice-Chancellors. My first year as Greek Adviser at SIUE, we even had a property development company, owned by one of the wealthiest alumni and benefactors of the University, present a proposal to build, maintain, and manage Greek Housing on campus at no cost to the University (only the land, of which we have plenty of 2,660 acres, second largest campus in the country!). I was the only person at the meeting in favor of it

I have said that Greek Housing would actually make my job easier (it is so hard getting people together for meetings, etc.), and our Director of Admissions has actually said that the lack of Greek Housing is hurting admissions, because when prospective students visit campus, they want to know where the fraternity/sorority houses are. We have been primarily a commuter school,(although nearly 30% total, and almost 50% of freshmen live on campus) and to prospective students it just says that there isn't any campus life and nothing to do on the weekends.
There are A LOT of schools that have built or are building Greek Housing on campus. It seems to be the big trend nationally right now...
I just wish my campus would get it.