The purpose of this part is to supplement previously enacted provisions of law that authorize cities to levy assessments within property and business improvement districts, to ensure that those assessments conform to all constitutional requirements and are determined and assessed in accordance with the guidance set forth in this act. This part does not affect or limit any other provisions of law authorizing or providing for the furnishing of improvements or activities or the raising of revenue for these purposes.
Ca. Sts. and High. Code § 36602