At present the office real estate market in Sweden faces new challenges since the economic and real estate crisis of 2008-2010 years. Since the time of economic and real estate crisis of 2008-2010 years, the office real estate market has started to face new challenges. For example, office vacancy rates have increased significantly and challenges how to find the tenant for office premises became very actual. At the same time the demand for high quality office premises still exists on the market but with new requirements to the standards of the office working space. It is happening because the employees’ needs and requirements become more oriented to the comfort and safety of the working place. The employers try to keep and motivate employees by providing the most efficient and comfortable office space to work in and balance on cost-quality issues at the same time. In order to influence on demand from tenants’ and empower tenant search process the landlords have to use new, more competitive methods. The external design of the building and internal design of the office space in particular become more and more significant in leasing, sub-leasing and buying premises property purchase at the real estate office market. It is also useful and important because tenants can change the interior and design project upon their business needs and company’s strategies. The aim of this research paper is to set up the hypothesis that the office’s space design has a significant influence on tenant search process, plays the key role in so-called optimal office for tenant and tests above mentioned hypothesis by the empirical research study (method of questionnaire) among real “market players”-tenant representatives, consulting agencies and property owners. The location for the research and analysis activities is selected as Stockholm and Stockholm’s region, time frame is September - October 2010.