All persons proposing to construct, erect, alter, extend, relocate or structurally change any building, structure or portion thereof, shall apply to the Permit Administrator for a building permit. Applications shall be made solely by the property owner. Applications shall include detailed floor plans, showing all scaled dimensions, together with specified uses. No building, structure or portion thereof shall be constructed, erected, altered, extended, relocated or structurally changed until a building permit has been issued by the Permit Administrator.