Ala. Code § 45-37A-251.55

Payment of any assessment, or if delinquent, the collection of the assessment, shall be made in the manner and as provided for the payment of municipal improvement assessments as provided for the payment of and delinquent collection of municipal improvement assessments pursuant to Article 1, commencing with Section 11-48-1, Chapter 2, Title 11. The city, in the latter notice, may elect to have the tax collector collect the assessment by adding the same to the tax bill. Upon that election, the tax collector shall collect the assessment using all methods available for collecting ad valorem taxes.