Pakistan's Army to the U.N. is the modern day equivalent of the Hessians were to European Nations in the 18th Century.
Their Army brings in a lot of money for the Pakistani Government, paid for from the UN for participating in Peace Keeping Duties.
So it would NOT be surprising that the Military Town of Pakistan that OBL was hiding in, would have some lavish facilities in a poor state like Pakistan.
Concur with the relative standards, OBL's compound may have appeared to be just a large run down home with a wall around it, but this is nice in the mid-east. Taking pride in your home and keeping it good looking and clean, is only catching on in the mid-east, you do see some nice neighborhoods in the mid-east; but most people still really don't care that much and even upper middle class, which would probably NOT qualify as working poor in this country, let their homes get rundown and look like trash.