When a jury for opening or widening a street, or for assessing damages on the same, find a building or buildings extending out upon the sidewalk, a distance not exceeding two-thirds of the width, such buildings may be left until the wants of business and travel may require their removal; and no damages shall be allowed the owner therefor until a future jury shall determine the necessity of their removal and the amount of damages then to be paid.
53 P.S. § 16419