Problem
Without common land no social system can survive.
Solution
Give over 25 percent of the land in house clusters to common land which touches, or is very very near, the homes which share it. Basic: be wary of the automobile; on no account let it dominate this land.
Related Patterns
… just as there is a need for public land at the neighborhood level - Accessible Green (60), so also, within the clusters and work communities from which the neighborhoods are made, there is a need for smaller and more private kinds of common land shared by a few work groups or a few families. This common land, in fact, forms the very heart and soul of any cluster. Once it is defined, the individual buildings of the cluster form around it - House Cluster (37), Row Houses (38), Housing Hill (39), Work Community (41).
Shape the common land so it has some enclosure and good sunlight - South Facing Outdoors (105), Positive Outdoor Space (106); and so that smaller and more private pieces of land and pockets always open onto it - Hierarchy of Open Space (114); provide communal functions within the land - Public Outdoor Room (69), Local Sports (72), Vegetable Garden (177); and connect the different and adjacent pieces of common land to one another to form swaths of connected play space - Connected Play (68). Roads can be part of common land if they are treated as Green Streets (51) …
Reference for full-text of Pattern: p. 336high-confidence