Neighborhoods are generally accepted as a proper concern of urban designers. Recent interest has shifted from the idea of creating neighborhoods to that of creating residential communities. Can one really design a community? The concept of co-neighborhood is introduced to mean a neighborhood with physical and social characteristics that are especially favorable to the creation of community. The question then becomes, can one design co-neighborhoods? A review of social science literature and a study of planned communities in the United States suggest fifteen attributes of co-neighborhoods that can be introduced through design. These can be grouped into five strategies. Each strategy incorporates both physical and social components. Strategy 1. Assemble a group of people who are predisposed to getting along with one another. There are two components. The first is to market a clear vision of the community-to-be so that new residents will come in with similar expectations and similar goals. The second is to attract people who feel that they can live together with a minimum amount of stress. Strategy 2. Bring people together into an organization that has the authority and the capacity to address their common interests. There are two components. One is to create an organizational structure that makes it possible for residents to work together in a purposeful way and on a continuing basis. The other is to create community-size neighborhoods by building physical subdivisions that house the optimum number of people for an area-wide organization. Strategy 3. Introduce programs, processes, and symbols that bring people together and hold them together over time. The strategy has four components. The first is to assemble a group of residents who are all strangers together, and so unusually open to the possibility of meeting new people and forming new friendships. The second is to create programs that remove barriers to interaction, and give people a pretext for meeting one another without having to commit to developing friendship. The third is to design residential environments that remind residents of community-defining events, symbolize their traditions, and give them a sense of continuity and direction in changing times. And the fourth is to attract a population of stable, long-term residents; they are more likely to develop a local social network, and develop an emotional attachment to the area. Strategy 4. Provide facilities that bring people together under conditions that are conducive to meeting and interacting. It has four components. One is to design residential areas with their own schools, convenience stores, parks, playgrounds, etc.; places that bring local people together. Another is to arrange the houses, spaces, and related uses so that they open people and activities to view, reduce obstacles to meeting, and increase reasons and opportunities for interaction. The third is to create an environment that is suitable for leisure-time use, and so conducive to casual socializing. And the fourth is to create ownership and tenure conditions in which individual residents stand to benefit from the success and lose from the failure of the collectivity. Strategy 5. Introduce forms and symbols that express a collective identity. It has three components. One is to create a composition in which all of the parts are subjugated to the whole; this conveys a message that the differences between individual residents are less important than the similarities that bind them together. The second is to create physical boundaries that make it easier for residents to identify and reach agreement on who belongs in their area and who does not, and to define the jurisdiction of their neighborhood organization. The third is to create an overall appearance that is distinctive, and with which residents as a group are willing to identify. The study concludes that it is possible to design for community as long as design is understood to include both physical and social components. In application, the five design strategies do not necessarily have the same order of importance: a strategy that is important in creating one type of community may be marginal or irrelevant in creating another. If, as suggested, communities are more likely to happen in co-neighborhoods, then it is reasonable to believe that good communities are more likely to happen in good co-neighborhoods. Criteria for good co-neighborhoods include congruence, control, and equity.