How long do Mortgage Approvals Last?

I am looking to buy my first home next summer, and I was wanting to see where I stand on what I can afford with my credit (fair) and my income. I was wondering how long does the mortgage approval last for, say if I applied and got approved, how long would I be able to buy a house on that? Also, am I legally... show more I am looking to buy my first home next summer, and I was wanting to see where I stand on what I can afford with my credit (fair) and my income. I was wondering how long does the mortgage approval last for, say if I applied and got approved, how long would I be able to buy a house on that? Also, am I legally obligated to buy a house if I get approved for a mortgage? Last question, are there any internet sites that I can go to, to try and find out my limit myself? Thanks so much!
6 answers 6