This document is a land sale agreement between a seller and buyer in Kenya. This Land Contract Form is available for use on UpCounsel.Download this free sample Land Contract Form template and have it customized today. Example Land Sale Agreement. This is a sample land sale agreement that can be used as a guide for drafting a land sale agreement in Kenya. An addendum to purchase and sale agreement is a kind of attachment to a real estate contract that adds new terms and conditions to the original contract. 1. The Vendor shall sell and the Purchaser shall purchase the said property free. From all charges and any other encumbrances.