In accordance with existing protection and management constraints, houses will not be built on slopes greater than 25%, but hillside orchards that accompany those houses are permitted. Development will also not occur in managed wildlife reserves, military bases, National Forests, state parks, or privately held reserves. However, other existing constraints on development will be relaxed.
Allocation of new houses will generally be consistent with the current trend: 50% at rural residential and 50% at single family density. There will be no allocation of multi-family housing. Commercial and light industry will be built along major transportation corridors following the existing zoning and development patterns for the area.
In order to locate land uses that reflect the spread of urbanization, an evaluation of attractiveness for single family and rural residential development was made. Rural residential houses at a density of one house per two hectares were distributed randomly within those areas that had the greatest attractiveness. Depending on the soil and slope, the land around the house became either avocado orchard, vineyard, grazing or non-native vegetation. Larger single family housing developments, which require location in areas of sewer and public water facilities, were allocated in quarter section (i.e., 0.4km x 0.4km) developments in most attractive areas. Figure 118 shows the development between 1990+ and Spread 2010.
The current spread pattern of development will continue after the year 2010 to build-out. There will be no new conserved land. Single family residential development will continue to extend across the valleys, and rural residential houses will continue to scatter across the landscape, dotting the ridgetops and fragmenting the remaining natural vegetation. All development prior to 2010 will remain, except in cases where land is zoned for more intensive use. Rural residential areas and all types of vegetation may be developed with multi-family housing or commercial and industrial use if zoning permits. However, single family housing will remain even if zoning allows for a more intensive use. Commercial development will line existing major roads and highways, altering the visual quality of the landscape. Spread Build-Out is shown in figure 119.