If there is any chance that you may have a high water table in wet years or that runoff may reach your home site, pay now before you start to build and get a good drain design and have it installed as you build your knew home.
After your home is built if you start dealing with water seepage issues it very well could cost you much more than if you installed a drainage system now, as you build your new home.
Water will take the path of least resistance whether flowing above ground or underground. The microscopic gap between your footing and foundation wall, then up between the slab isolation joint and into your basement may very well become that path of least resistance.
To help reduce and hopefully eliminate water problems a basic drainage system of a perforated pvc pipe in gravel below the basement slab should allow any water that gets close to your home to flow into the pipe, which should be directed away from the home or into a catch basin. Some areas may need to have the flow go into a sump tank which then pumps the water up and away from the home.
You can always spend additional money for such things as asphalt coating of the footing / foundation gap, additional drains under the slab that tie into the drain around the perimeter, floor drains, clean out access, interior perimeter drainage system and so on.
For some additional commentary and explanation on a foundation drain system at a 6,000 sf home in Mapleton, Utah that recently sold watch the video below.