In graduation thesis I discuss how real estate agencies in Republic of Slovenia, more precisely in Mestna občina Ljubljana operate during the period of recession and changes with the period before the recession. With poll questionnarie it is presented operation of the market of residential properties in the area ob Mestna občina Ljubljana in the year of 2013. It is presented how that market is seen by real estate agencies together with changes in the market according to the period before the year of 2008. Specifically it is presented sale in the field of residential properties and advertising in that field. In the year of 2013 the main sales product of real estate agencies in the field of residential properties was apartments while sales of houses was far behind them. Number of property transactions in 2013 compared with the period before 2008 fell for two-thirds of respondents which didn't affect on employment of estate agents, as their number remained unchanged in more than two-thirds of the respondents. Real estate agencies in 2013 advertised mostly on the Internet followed by advertising in newspapers and specific sales magazines. Share of the costs for different types of advertising did not change on average for half of the respondents in the year of 2013 compared to the period before 2008. The largest number of respondents experiencesed increas of the costs for advertising on the Internet. Accordingly, respondents were more or less undecided wheather intensive advertising during the period of recession for a real estate agency is a competitive advantage. For real estate agencies the most competitive advantage is experienced real estate agent and a wide choice of residential preperties from the lowest to the highest price category.