1031 questions

[Will Browm]

I sold a rental yesterday for a solid profit. Though the purchase price was miniscule, it means I sold it well over 3X my purchase and rehab costs. I rented it for four years to one family and the sold it. I bought in cash and sold in my sole owner LLC. I have a lot I own in the same LLC name. I want to build a rental on the lot and keep from paying taxes on the gains. I have the check but I am not sure if I need an intermediary or not. Does anyone know the steps I must take?