Local Government Code of 1991
Section 7. Creation and Conversion. - As a general rule, the creation of a local government unit or its conversion from one level to another level shall be based on verifiable indicators of viability and projected capacity to provide services, to wit:
(a) Income. - It must be sufficient, based on acceptable standards, to provide for all essential government facilities and services and special functions commensurate with the size of its population, as expected of the local government unit concerned;
(b) Population. - It shall be determined as the total number of inhabitants within the territorial jurisdiction of the local government unit concerned; and
(c) Land Area. - It must be contiguous, unless it comprises two or more islands or is separated by a local government unit independent of the others; properly identified by metes and bounds with technical descriptions; and sufficient to provide for such basic services and facilities to meet the requirements of its populace.
Compliance with the foregoing indicators shall be attested to by the Department of Finance (DOF), the National Statistics Office (NSO), and the Lands Management Bureau (LMB) of the Department of Environment and Natural Resources (DENR).