Contact your accountant, lawyer and broker (if applicable) for the best tax, legal and financial effects of buying or selling a business in your country. A company has a site. It can be a private house or a set of buildings located on a plot of 1000 hectares in an industrial park. A business purchase agreement serves as an official record of the sale and purchase and also serves as proof of ownership for the buyer. The basic structure of a purchase or sale contract is based on guarantees. Use this short document to buy a domestic business that sells goods or goods and services online. Businesses can vary greatly in nature, which means that the requirements for sales contracts also vary widely.