It is the intent of the Legislature in enacting this article:

1. (a) To assure that counties and cities recognize their responsibilities in contributing to the attainment of the state housing goal.
2. (b) To assure that counties and cities will prepare and implement housing elements which, along with federal and state programs, will move toward attainment of the state housing goal.
3. (c) To recognize that each locality is best capable of determining what efforts are required by it to contribute to the attainment of the state housing goal, provided such a determination is compatible with the state housing goal and regional housing needs.
4. (d) To ensure that each local government cooperates with other local governments in order to address regional housing needs.