Creating a business plan is one of the most important tasks while establishing a company. A Business plan helps the new company to proceed to success. A Business plan evaluates the feasibility of the company and formulates the basic ground for the company. This thesis provides knowledge and practical information on what business plan is and how to use it in establishing a company. This master’s thesis was created for the purpose of evaluating the feasibility of a company acting in the rental apartment business in the area of Ylivieska. This evaluation was done before establishing the company. The framework used in this thesis is problem-based structure. The theoretical and practical contents are presented in turns. This thesis follows...