The district board shall have power to change the boundaries of the proposed improvement district, the project to be undertaken, the estimate of the cost of the project, the method by which the project is to be financed, or any two or more of such matters; provided, however, that the board shall not change such boundaries so as to include any territory which will not, in its judgment, be benefited by such improvement and shall exclude from the proposed improvement district any territory which it finds will not be benefited by inclusion therein.
Source:
Section 6550.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=6550.5..