First of all, you have to wait till the court dismisses chapter 7, after that you can go for a mortgage loan. Again, the exact answer is its diverse on what home loan you choose, as diverse home loans have diverse requirements. Chapter 7 is the most common kind of bankruptcy. Throughout chapter 7, the court rubs off your debts, and it harms your credit profile as well. In order to acquire a home loan on how long I buy a house after chapter 7, the waiting period will go around 3-4 years, at least until the court dismisses your bankruptcy in order to get qualified for a conventional loan.