I have an underground garage at my house. The garage door sits a couple feet in front of the house's main support beams. This means the porch, which is made of cement, is partly inside the garage. My issue is that water (go figure I live in Oregon)has seeped through due to undetected cracks in the cement and deteriorated the porch from the underside. A poor roof drainage has caused a crack through the wall along the edge of the garage in that same area and I now have huge issues. I have no idea how to fix it. I want to find a cheaper solution than to tear the whole thing down and rebuild, and City construction rules also limit what I can do without incurring huge permit fees. Any ideas? I wish I could post pictures, but do not know how to do that since I do not have a website, and am simply a homeowner.