San Francisco's Planning Commission approved the development plan for Treasure Island. This plan, expected to cost $1.5 billion will create housing, office space and new jobs on Treasure Island, the man-made Island in the San Francisco bay. Opponents of this development cite the environmental impacts of creating a new San Francisco neighborhood on the Island in the middle of the bay and are opposed to the 1:1 ratio of housing units to parking spots proposed by this plan. They also don't like that this Island can only be reached by travel on the bridge, and this will create congestion. Supporters like the creation of the new housing, including a percentage of affordable housing units, the development of green buildings and many of the sustainable elements of the plan.