As a buyer of land, you'll want to make sure of what it is you can build on the land.  Contacting the County for the location of where the land is, is the first place to start.
Once you know what you can do on the land, or build on it, the next step is to check out builders in the area that can help. There are always several choices, so homework helps.

Below are just a few suggestions for you to check out on your own. I have not personally used them, but have developed a relationship with them that I don't mind referring others to, since it helps to know someone who knows someone in the field that cares enough to help others.  Customer service is so important to me, and I'm sure to you too.  So, check out the possibilities, and get brain storming. 😊

Distinguished Development and Contracting is located in Florida and Southern Nevada to help with your building projects. A couple of their home designs are shown below too . Click on the photo to be taken to their website.

You may want to check out Manufactured Home Builders too.  Although this is not the only one who sells Manufactured Homes, there are others too, but this sales office is located in Pahrump, NV location where I focus most of my buying and selling land at affordable pricing.

Just click on the photo to be taken to their website to find out more.  The photos shown below are just a few of many options here...