A 14 foot wide utility easement across your entire backyard? Usually they run those things along the back fence. I would ask the title company for a copy of the easement document and see what that says about what utility lines there are. Also, I might try one of those "Call Before You Dig" where they will come out and mark out where the utility lines are so you can see. If you just want a patio, it may not really be an issue. But yeah, if you wanted to build anything back there more than a patio, like a room addition or something, then it would encroach on the easement and cause a big problem whenever you sell. I normally try to make sure my purchase contracts for my investors have an option period of about 10 - 14 days and make the title commitment due within the option period so we have a chance to review these things. If you're past the option period, but have a loan and therefore a 3rd party finance contingency, that's your next easiest way to get out of the contract. Often you can call up the lender or loan broker, tell them the situation, and they might disapprove your loan for you, kicking you out of the contract. Lenders have about a zillion reasons they can use to kill a loan application, so they can probably find one to fit your situation.