Tri Cities can get very hot and dry in the summer time, with temperatures over 100 degrees for days or weeks at a time. The Tri Cities only gets around 12 inches of rain per year, which means that if you want a green lawn, you are going to have to install underground sprinklers, or be outside a lot moving your sprinklers and hoses around.
If you are building a new house in the Tri-Cities, make sure that you contact a few of the companies listed below for bids on underground sprinklers for your new home. Underground sprinklers in the Tri-Cities, will also increase the resale value of your home if you ever want to sell it.