Wis. Stat. § 20.914: Acquisition of land and buildings.

All appropriations made by law for the purchase of land and for the construction of new buildings or additions to existing buildings shall be expended only in accordance with the following conditions:

(1) Land purchase, governor’s approval. No land shall be purchased and no contract or contracts entered into for the purchase of any land by any state agency until complete estimates of the total cost thereof shall have been submitted to and approved in writing by the governor. The governor shall withhold such approval until the governor is satisfied by a personal investigation, or by such other means as the governor adopts, that such land is required for the purpose proposed, and can be purchased for the sum proposed out of the appropriations made for such purpose.

(2) Construction in order of need. Except as expressly provided otherwise, all construction shall be in the order of the greatest need therefor, as determined by the state agency to whom the appropriation is made.