We are buying some land and the sewer line runs across the property. Is it possible that we could rerun the lines going across the back part of the property or straight up the side?

Anything is possible with the right price. We can't answer you question because we have no idea as to how the pipe is sloped as it goes to the sewer or septic. You may be trying to run uphill in which case a lift pump is needed for the house $$$. Talk to your local water and sewer dept, they can give you some insight as to possibilities. Why do you want to move the pipe?

Just like ma0642 said: depends on the slope. Yes, it can be re-routed but you would have to post more details about the property, including size, slope and what you plan on to build on it.

Questions: Why do you want to re-route it? Planning to excavate there? Also, does that sewer run from neighbor's property across your lot? Is that City sewer running in an easement area across your lot ? Or is that only a sewer lateral that beging at the street and ends somewhere in the middle of your lot?

Back to you

Milo

Who owns the sewer line... its the Sewer Authority... its going to be on your deed and there won't be any moving it. For example.. I have one that crossed the back part of my property... its there and isn't going anywhere if I want it to or not. THere would be an easement on your deed/title if that's the case.

If it's a private line from your house , then follow what the others have suggested.

We are buying some land
Assuming you are talking about a city or county sewer line, don't buy the property unless you get an agreement to relocate sewer line first. Rest assured that the city or county will not be anxious to accommodate you. There is nothing in the deal for them. Take note that you will not be allowed to build any permanent structure in the easement, even if you don't need excavate.

If this is a private sewer and some one else has an easement, get an agreement to vacate the present easement and relocate before purchasing.

If I have an easement across your property for a sewer line and you build a house on it and the sewer gets stopped up, I can tear down you house to fix the sewer line.

In other words, you probably shouldn't buy this property unless you can live with the sewer line in it present location.
Note, I have personal experience with this subject.