Tennessee Code Title 7. Consolidated Governments and Local Governmental Functions and Entities § 7-33-303

(a) When the governing body of a municipality shall determine to construct an improvement as authorized by this part, or when it is petitioned by the owners of property to be benefited having an assessed value of at least fifty-one percent (51%) of the total assessed value of all the property to be benefited from the proposed improvement, it shall adopt a resolution that such improvement shall be made. The resolution shall describe the geographical limits of the properties to be benefited, and the location, nature, scope and extent of the improvement. The resolution shall also include a preliminary estimate of the costs prepared by an engineer licensed by the state of Tennessee, a declaration that the improvement will be designed and construction will be supervised by an engineer licensed by the state of Tennessee, and a statement of the proportion of total costs to be assessed against benefited properties, which shall not exceed seventy-five percent (75%) of the total costs of the improvement; provided, that the total costs may be assessed against benefited properties if the governing body additionally pledges full faith and credit of the municipality to satisfy any deficiency in collections of improvement assessments. In all succeeding proceedings, the municipality shall be bound and limited by the resolution as it may be amended, except that the total costs assessed against benefited properties may exceed the preliminary estimate of costs by not more than ten percent (10%). The resolution shall provide for a public hearing before the governing body at a time and place specified in the resolution.