The legislative body of a newly incorporated city or newly formed county shall adopt a general plan within 30 months following incorporation or formation. During that 30-month period of time, the city or county is not subject to the requirement that a general plan be adopted or the requirements of state law that its decisions be consistent with the general plan, if all of the following requirements are met:

1. (a) The city or county is proceeding in a timely fashion with the preparation of the general plan.

2. (b) The planning agency finds, in approving projects and taking other actions, including the issuance of building permits, pursuant to this title, each of the following:

   1. (1) There is a reasonable probability that the land use or action proposed will be consistent with the general plan proposal being considered or studied or which will be studied within a reasonable time.
   2. (2) There is little or no probability of substantial detriment to or interference with the future adopted general plan if the proposed use or action is ultimately inconsistent with the plan.
   3. (3) The proposed use or action complies with all other applicable requirements of state law and local ordinances.