My general contractor told me that there was not a storm sewer lateral when we built, and I found out that there is (after contacting the local municipality. The excavator/plumber is willing to connect the downspouts and sump pump on one side of my house, but said that he would not do the other side (on the other side of the driveway). My feeling is that we definitely would have done it without a problem, but that he doesn't want to break through the driveway a year later. Am I asking too much to require that he hooks up to downspouts on both sides of the house?
Take a look at the ground level around your house, if you feel there is sufficient grade to allow ground water to run away from your home on the far side of the driveway then just do the one side but if you seem to be at a low point in the subdivision/property then your best bet is to control the ground water by all means necessary. Do some research on backwater valves! I would consider it essential if your in a flood prone area.
