No building, fence, sidewalk or other structure or portion thereof shall be erected, moved, demolished, or added to, without a zoning/building permit therefor issued by the Zoning Administrator. No zoning/building permit shall be issued except in conformity with the provisions of this chapter, except after written order from the Board of Adjustment. Fees for zoning/building permits shall be as provided by Council resolution. Zoning/building permits shall be applied for with the Zoning Administrator and shall expire two years after the date of issuance if work is begun within 180 days of issuance or after 180 days if no substantial beginning of construction has occurred. Extensions of time may be granted in writing by the Zoning Administrator for good cause.