Code of Alabama
Article 2 - Policies Governing Land Acquisition.
Section 18-1A-31 - Waiver of Failure to Comply With Sections 18-1a-20 Through 18-1a-30.

If not inconsistent with the requirements of an applicable statute or regulation, a failure to satisfy the requirements or limitations imposed under Sections 18-1A-20 through 18-1A-30, inclusive:
(1) Is waived by the failure of the property owner, in the exercise of reasonable diligence, to object to or seek relief based upon noncompliance; and
(2) May be waived by written agreement between the property owner and the condemnor.