Urban green spaces generate a variety of uses which range from amenities, aesthetic, bequest andrnaltruism valuernThis study explores the awareness of the peoples of Addis regarding these ecosystem services of thernenvironment. the monetary valuation of these environmental values which are not traded atrnordinary market was estimated by the contingent valuation method using indirect utility measurernand introducing a referendum take if or leave it price (initial bid).rnA survey which gleaned data using a face-to-face inter views of 200/0Uf which 8 samples wererndiscarded /household heads in four-purposely selected sub-cities by using a stratified randomrnsampling technique,rnThe people of Addis have a positive WTP and attitude towards the current activities of urban greenrnspace development as well as for improving the quality from 'he present level. Most of therninterviewed households have the habit of recreation in urban parks (green open spaces).rnThe empirical results shows that households WTP is affected by a number of explanatory variablesrnboth socio-economic and others.rnSocio-economic variables like sex of the house hold, income, education and type of workingrninstitution. affect the probability of }VTP positively. total willing ness 10 pay were derived from thernopen-ended follow tip question and conservative estimate of total willing ness to pay for the existedrnuse of urban green spaces, were found to be birr 16,682,574.33 and birr and birr 31, 700,248.7 forrnimproved use of urban green spaces per annum.rnThis study will help decision makers in this area to analyze the cost and benefit of the program, tornidentify intervening mechanism to develop public opinion in environmental issues. Also enable themrnto know the present awareness level and commitment of the public at large.rnKey words: urban green space, Amenity value. bequest, aesthetic. altruism, CVM,rnWTP, Addis Ababa, Ethiopia.