You wrote >. I told her she had to fix the broken pipe< WHO did you have come out to tell you it is broken ? You also wrote > Neighbor said seller had it snaked out a few years ago< how many years was a few years ago ? If the seller had been doing this once or twice a year for the last X number of years then I suspect you would have a easier time getting this seller to settle out of court. BUT if it has been 2 , 3 , 4 , 5, 6 years ago since the seller had to have a sewer auger service out then I suggest your going to have a harder time trying to show a court that the seller lied . If your home has old fashioned cast iron sewer pipe that leads out to the street roots could have gotten into it at a joint and nothing is really broken. IF that sewer pipe is 75, 80, 90, over a hundred years old and part of it had rusted thru or literally caved in how would you prove that the seller hid something from you ( house I grew up in had cast iron sewer line and had to have sewer auger out once to cut thru roots that made it into a joint , and seems to me that was about a year or two after we connected to city water and sewer, old old line was connected to newer to by pass cesspool tank ( and continue to sewer main in street) I asked what I did because I have lived in ancient housing for decades , place I rented in 79 was built in 1888, first home I bought was built in later 1890s, second property was a rental same age, third place was built in 1910, and my home of the last 20 years still has its 1963 septic system,( even though the house is almost 120 years old ) So if your sewer line is really old even soil changes such as frost heaving or ground shrinkage could have caused a crack and again how would you prove a claim ?