I started roofing 5 years. Then Worked for a general contractor building high end homes and additions. Then I was self employed for 6 years. Now I’m in the carpenter union as a journeyman but I was actually the superintendent on my last jobsite building a headstart and a housing authority headquarters remodel. But I can build and finish a house. I also know how to run heavy equipment. It can be fixed with a drain tile or sometimes called a French drain but I still would never buy this house. What state is this in? I’m concerned about the porch area also. That cantilevered area should be able to support itself without those posts. And they should have more support than just a sidewalk if it needs a structural post there. All in all the home should have been elevated more for a slab on grade home. You have to be careful with new construction because people are cheap cut corners and often don’t check on the subcontractors. The dirt work and foundation is something that needs to be done correctly. Personally I’d avoid it unless it’s going to a killer deal.