If the construction code official determines that any sign has been erected in such a manner or has deteriorated to such a degree as to be unsightly or to constitute a hazard to the general public, it shall be removed or repaired to the satisfaction of the construction code official within 48 hours after written notice of such condition has been served upon the owner, owner's agent, lessee, or occupant. Failure to comply therewith shall be a violation of this zoning code and subject to its penalties. The construction code official may cause any sign which is an immediate peril to persons or property to be removed summarily and without notice.