Harborport's rapid growth is attributable to the exodus of affluent families from the urban center city, the completion of two major freeways connecting Harborport with the center city, and the development of large office and industrial parks within easy commuting distance of Harborport. Harborport obtains its water supply from a metropolitan water district. When the Homes Corporation applies to the city for a conditional use permit, technical evidence presented to the planning commision shows that water and sewer capacity are adequate to accommodate the project but that the 300 units would generate significant additional traffic. In 1978, the local school district requested the city to require residential subdividers to contribute to a fund which would assist the district in purchasing or leasing portable classrooms. There is support for the project by civic organizations and a number of individuals in other parts of the city.