DG's house was torn down years ago to make way for stadium expansion...along with Alpha Phi's old house, Delta Phi Epsilon's old house, and the Pi Beta Phi house.
(And
NO, Gamma Phi Beta's house is
NOT the old Delta Gamma house! It is the old Alpha Xi Delta house. It may still be owned by Alpha Xi Delta, for all I know.
From what I understand, land behind the (new) Pi Beta Phi, KD and Chi Omega houses will be offered first to existing groups to build a new house(s). Then the incoming groups can buy existing houses. Unless, of course, the current groups choose not to build. But I imagine they will...many of them are so big now that they are either violating fire regulations to hold chapter meetings, or holding meetings in classrooms. I hear that Delta Delta Delta has to eat dinner in shifts.
(All above subject to correction by anybody more in the know than me!

)
What can we do to help? As Killer Baez says....
SAVE UP! It's gonna be expensive to build a competitive house at UA!