inspection surfaced foundation issues

My wife and I have recently put a contract on a house in Marietta GA and during the inspection a crack through the entire foundation was found. The inspector stated that it was probably due to settling but would not state whether or not the problem would get worse (no liability). The house is 23 years old and has settled about 2.5 inches. We are planning on asking for the foundation to be fixed or for a guarantee that the seller will fix the foundation/damage if the house continues to settle. We still want the house, but are there any other conditions or things we need to ask for to cover us in case the back of the house falls off a couple years down the road?

[HomeGuru]

Have a foundation engineer inspect the home.

[faithandhope]

Home Guru is correct, get a second opinion. In Texas, an inspector has to state that the foundation is fine or in need of repair. But even if it is fine, they will make a comment about the settling or cracks because they have to, but will also make a determination whether it is a true "cracked" or broken slab or just common movement. There is settling on every house to a degree and will always continue to be on most houses and can sometimes be controlled by something as simple as watering around the foundation. But that movement is different from a broken slab. The engineer will give you peace of mind because he uses leveling, measurements and guages that inspectors, who just look for visible signs, do not. Good Luck.