St. Paul is today a city of homeowners, wide lawns, large garages -- and crowds of homeless people who overflow emergency shelters. Many are working full time yet cannot find affordable housing. The urgent need for more low-income housing as well as less automobile use will move the city gradually toward greater density. Another factor will be the conservation of energy for heat and cooling that comes with attached housing and multi-family buildings. An aging population will also add to the demand for rental and lower-maintenance housing. In the Green vision increased density will be balanced by public green space, community gardens, and more opportunities for outdoor recreation. The dignity of home ownership will be preserved through wider use of co-housing communities, co-operative apartments, and land trusts.