For the purpose of accomplishing a coordinated, adjusted, and harmonious development of the municipality and its environs which will, in accordance with present and future needs, best promote health, safety, morals, order, convenience, prosperity, and general welfare, as well as efficiency and economy in the process of development; including, among other things, adequate provision for traffic, the promotion of safety from fire and other dangers, adequate provision for light and air, the promotion of the healthful and convenient distribution of population, the promotion of good civic design and arrangement, wise and efficient expenditure of public funds, and the adequate provision of public utilities and other public requirements, the legislative body of any city or village may provide by ordinance that no permit shall be issued for, and no building or structure or part thereof shall be erected on any land located within the proposed future outside lines of any new, extended or widened street, avenue, place or other public way, or of any park, playground or other public grounds or extension thereof shown on any such certified and adopted plat. Any such ordinance shall provide that the zoning board of appeals, if the municipality has such a board, or if not, that a board of appeals created for the purpose in such ordinance, shall have the power on appeal filed with it by the owner of such land to authorize the granting of a permit for and the erection of a building, or structure, or part thereof, within the lines of any such mapped street, park, playground, or other public ground in any case in which such board finds, upon the evidence and arguments presented to it on such appeal, (a) that the entire property of the appellant located in whole, or in part, within the lines of such mapped street, park, playground, or other public ground cannot yield a reasonable return to the owner unless such permit be granted, and (b) that, balancing the interest of the municipality in preserving the integrity of the adopted map, and the interest of the owner of the property in the use and benefits of his property, the granting of such permit is required by considerations of justice and equity. Before taking any such action, the board of appeals shall hold a public hearing thereon, at least 10 days' notice of the time and place of which shall be given to the appellant by mail at the address specified by the appellant in his appeal petition. In the event that the board of appeals decides to authorize a building permit and erection, it shall have the power to specify the exact location, ground area, height, and other details and conditions of size, character and construction, and also the duration of the building, structure, or part thereof to be permitted.