Notice of the time and place of the sessions of the Board of Review shall be published by the Clerk at least ten days prior to the Board's first session. In each case where assessed value of any property is increased or any property added to the rolls by the Board, the City Assessor shall give notice to the owners thereof, according to the first assessment roll, by letter mailed first class not later than midnight following the end of the session at which the Board made the increase or addition. Such notice shall state the date, time and place that the Board of Review will hear objections to the changes made by the Board of Review, which date shall be not less than five days after the mailing of such notice. The failure of the owner to receive such notice shall not invalidate any assessment roll or assessment thereof.