It shouldn't be a problem......I did something similar to a house that I was interested in but it needed a lot of repair work. So I told the agent that I was going to have a contractor come in and give me a work proposal on all the work I felt it needed. I called a general contractor up told him that I was interested in a property but wouldn't purchase if repairs were too costly, he agreed to come check it out.........And now I'm set to close May 22nd!! So I suggest to try it never hurts, the most they can say is NO!! But a good way to sway them is to let them know before hand that you have intentions of using their service versus shopping around!!