Homeowner maintenance varies from one homeowner to another as well as from one house to another. This type of maintenance would include painting, stucco cracking repair, additional termite treatments, termite repair (which may include structural repair), caulking requirements, dry rot, drywall repair, etc. This estimate can be anywhere from $0 to a few hundred dollars depending upon the severity of the required maintenance. As an example, stucco repair on wood frame can cost several hundred dollars in addition to a couple of thousand dollars for the caulking and painting. Let's just say that in the next 15 years you have to do this one additional time than your neighbor that used Omni Block. Assuming the additional cost is only $2500 divided by 180 (15 years times 12 months) equals almost $14. Omni Block would recommend a higher value to insert into this field but a very conservative number would be $14.