(a) During the six-month period after the date of the final adjournment of the hearing under § 372.009, the governing body of the municipality or county may authorize an improvement district if, by majority vote of all members of the governing body, the members adopt a resolution authorizing the district in accordance with its finding as to the advisability of the improvement. Except for a resolution authorizing a district described by § 372.0035, the resolution must provide that the authorization takes effect on the date the resolution is adopted.
(b) Not later than the seventh day after the date the governing body of a municipality or county adopts a resolution under Subsection (a), the municipality or county shall file a copy of the resolution with the county clerk of each county in which all or part of the improvement district is located.

(c) Actual construction of an improvement may not begin until after the 20th day after the date the authorization takes effect and may not begin if during that 20-day period written protests signed by at least two-thirds of the owners of record of property within the improvement district or by the owners of record of property comprising at least two-thirds of the total area of the district are filed with the municipal or county secretary or other officer performing the duties of the municipal or county secretary. A person whose name appears on a protest may withdraw the name from the protest at any time before the governing body of the municipality or county convenes to determine the sufficiency of the protest.