Sorry to hear of your dilemma. There is no very straightforward answer, as every builder does things differently depending on the location in relation to groundwater. Many houses have foundation drains, either around the outside or the inside of the foundation footing. If the house is at a high elevation in relation to the surrounding area,(or the builder was working on the cheap) it might not be installed at all. Any foundation drain has to either be pumped via a sump pump or has to have a way to drain (downhill) to the outside.
Given a big rain, the ground can no longer soak up the water adequately and it starts coming up. If it is a regular occurrence the house should have a foundation drain and sump installed. If it only happens during a 50-year weather event, you could choose to just deal with it. Installing a rock bed sump pit and pump system without a foundation drain might help your problem, but there is no guarantee in that. Many homes can make big improvements by simply extending downspouts well out away from the house and making landscape improvements to ensure that all the surface water flows away from the home.