A North Carolina land contract documents the terms of a vacant land purchase and sale agreement between two parties. INTRODUCTION: These guidelines are provided to assist Broker and attorneys who are completing the Offer to Purchase and.How do I make a land sale agreement? Option agreements on land can be used a number of ways in farm succession or consolidation of farm interests in cotenancy. NOTE: This contract is intended for unimproved real property that Buyer will purchase only for personal use and does not have immediate plans to subdivide.