[dentist90]

As others have said, usually no problem. We have had several houses with septic over the past 25 yrs. You should place having the tank pumped and inspected as a subject on your offer. If you are looking at one of the 'classic' concrete tanks it is very common to see the outlet baffle eroded away. This allows 'chunks' to get downfield and clog the distribution box and field lines if not repaired promptly. Then you get to have your yard torn up. I would not buy a house with a septic system without a recent written tank report no matter how reassuring the owner is. What seems like two years to them could easily be 10.