This Master thesis analyzes diversification strategies, diversification possibilities establishment and realization theoretical aspects with reference to Lithuanian and foreign sources. Having applied the method of structurized poll in writing, the behaviour of construction and maintenance services consumers was evaluated, the factors which influence it were determined, the level of construction and maintenance services consumers satisfaction was determined, demands and expectations of unsatisfied consumers were ascertained. With a regard to the situation in the market and its changing tendencies and the results of consumers poll, the diversification possibilities of construction and maintenance services enterprises were estimated, the diversification alternatives prospects of construction and maintenance services enterprises were evaluated. The results of empirical research confirmed a hypothesis and allowed a statement that not fully satisfied demands of consumers, existing in the market, show diversification possibilities of construction services enterprises.