Nonprofits play a growing role in social service delivery as a result of privatization of local public services through contracting out by the public sector. This paper explores a competitive bidding process in eight regions of Russian Federation where local governments entered into during 2011-2012. The author reviews reasons to involve nonprofit organisations in a quasi-market as local government social service contractors. The non-distribution constraints and mission of nonprofits organizations tend to preclude exploitation of purchasers and consumers. Thus, this type of social services providers can be more appropriate for needs of the society. Then bidding documents have been analyzed in terms of a type of providers’ ownership, public or private one, levels of nonprofits activity and nonprofits’ competitiveness. The findings indicate considerable discrepancies between numbers of social services competitive tenders in the regions in question. Types of social services that the local governments procure vary significantly from region to region. They range from strictly standardized services to credence ones. These differences are supposed to be an essential factor of nonprofits’ participation in procurement because of characteristics of nonprofit organizations. The most active nonprofits’ involvement has been found out in regions where procured services are the same the nonprofits usually produce. Three types of nonprofits’ behavior in the regional quasi-markets have been discovered. Firstly, they take an active part in the competitive bidding and compete with business and public organizations successfully. Secondly, they actively participate in this process but compete with similar producers only. Finally, they are rather inactive as potential local government contractors.