I have run into a problem during the sale of our house. The west side of the yard is in a 500 year flood plain and the evalution report shows that the machinery is 9 inches below that level, which is the ductwork in the crawlspace.
Spoke with director who did survey and he suggested to bring in fill dirt and slope up on foundation of house till it's 9 inches from the floor level of entry door, or seal up all foundation vents and place new foundation vents no less than 9 inches from floor level. I thought about building 2' wall around crawlspace scuttle and put HVAC vent over scuttle which is 2'x3'. The house is 25'x45' and the crawlspace is 1000 sq ft.
Currently, there are 8 foundation vents total on house and if I seal them up then the new vents would go through the rim joist or ledger board. All vents are on top cinderblock row. I would not think that one large 2'x3' vent would be sufficient, or would it? I can get a truck load (7 tons) of fill dirt for $130 per load, but it is going to take alot of dirt since one side would need to be built up 2'.
Company doing survery stated they'd come back once we made changes so they could redo report and sent to loan company.
All suggestions are welcomed. Sale of my house is pending of these changes.