Ala. Code § 45-57-71.06

The owner, or owners, or any person who has an interest in real estate against which it is proposed to assess the cost, or any part thereof, of the construction or improvement, or his or her agent or attorney, may appear at any time on or before the date named in the notice or at the meeting and file in writing with the clerk of the county commission, or with that office, any objections or defense to the proposed assessment against the property or for the amount thereof. Persons who do not file objections or protests in writing against the assessment shall be held to have consented.