The inquiry will be carried out by Anti-Corruption Bureau (ACB) Thane division and the names were published on state ACB website recently, Thane ACB website stated.
The illegal seven-storeyed building in Shil Phata area of Mumbra crashed on April 4, 2013 killing 74 persons and injuring over 100.
The officials are among 25 persons who were arrested in connection with the incident.
The officials against whom the open enquiry has been sanctioned are -- deputy municipal commissioners (DMC) Srikant R Sarmokdam and Deepak Chavan, assistant municipal commissioner (AMC) Babasaheb S Andale, executive engineer Suabsh Rawal, deputy engineer Ramesh Inamdar and ward officer (Mumbra) Shyam Thorbhole.
The Shil Phata locality, which used to be a deserted area, was tapped by several prominent builders couple of years back who had built multi-storeyed housing projects without adhering to the norms.