The board of county commissioners from time to time by resolution may alter and amend any county building code after public hearing, notice of which hearing shall be given by at least one publication in a newspaper of general circulation in the county at least fourteen days prior to said hearing. In no case shall the area covered by the building code be extended or changed unless the same has been proposed by or is first submitted for the approval, disapproval, or suggestions of the county planning commission. Unless the county planning commission acts within thirty days, approval shall be assumed. The opinion of the county planning commission shall be advisory only and not binding upon the board of county commissioners.
C.R.S. § 30-28-204