I am in the process of purchasing a foreclosed home that has a water and mold problem in the crawlspace. The bank that I am buying the property from is taking care of the mold issue, which resulted from a broken sump pump and the house being vacant for 3 months. I would like to install my own drainage system with a sump pit and some kind of french drain system, but I am not very familiar with either. The crawl space is about 700 sq ft, and is a dirt floor with the sump pump situated in the center. I would like to do the work myself, and if anyone has any helpful tips it would greatly be appreciated.