It needs to be smooth and free of rocks and be able to drain properly. Abel recommends putting down a lawn starter fertilizer before installing the sod. When ready to lay the sod, begin with border edges so an end doesn't go on those area. The sod must be put down as tight as possible to ensure a good looking yard. Then roll it down and saturate thoroughly.
Most people offer installation services.
You'll pay more obviously, but it is definitely worth it. Saturation is very important with sod and with keeping that new lawn green throughout the season. One way to help is by installing an irrigation system first. An irrigation system is a more efficient way to water your lawn, according to Woodson. It's only on for a designated period.