(a) Before construction begins on a unit of the institutional division for which construction was not approved before January 1, 1991, the board shall establish a maximum capacity for the unit.
(b) Maximum capacity for a unit must be established under this section in the same manner as maximum capacity for a unit is increased under Sections 499.102, 499.104, and 499.105, except that time limits on official actions imposed by those sections do not apply.
(c) This section does not apply to a 2,250-bed (Michael-type) unit or a 1,012-bed (Daniel-type) unit, approved on or after January 1, 1991, unless the design for the unit is significantly altered or space in the unit is reduced.