Wis. Stat. § 32.53
If the common council proposes any public improvement involving the acquisition of private property or the use of public property, it shall pass a resolution by a three-fourths vote of the entire membership of the common council declaring the need to acquire or use certain property for a specified purpose. The common council shall state in its resolution the general nature of the proposed improvement and require the board to submit a report and tentative plan of the proposed improvement to the common council for its approval. The board may require the city engineer to submit to the board a detailed map and description of the property necessary for the proposed improvement plus adjacent property and other surveys, maps, descriptions of property or estimates of cost the board needs to prepare the report and tentative plan.
Wis. Stat. § 32.53