In the 1970s, a growing scarcity of land for suburban development resulted in escalating land costs, prompting developers to increase the density of homes on the land. In order to do this while still retaining a suburban look, they clustered homes around green open areas maintained by associations. These associations provided services that formerly had been provided by municipal agencies funded by property taxes. Residents of such development also had to pay their local taxes. Accordingly, local governments began promoting subdivision development as a means of improving their cash flow.