There are lots of fights about the family home. While a court can give the house or at least the use of the family home to the custodial parent there is no hard and fast rule that the wife gets the house. The court must consider the availability of other housing for the custodial parent as well as the children's relationship to the neighborhood. Although it is common for the custodial parent to be given the home either for a period of time or permanently it is not necessarily so.
Many needless fights are caused by people not really knowing what their home is worth. One of the reason we recommend using a state licensed and certified appraiser is that we think their estimates tend to be more accurate than say a real estate sales person who may have mixed motives in telling you what your house is worth.
(No copyright claimed to as to Illinois Statutes or other original government works)