Former chief minister Ashok Chavan, who had to resign due to the Adarsh society controversy, will appear before the commission probing the episode next week.
The two-member commission has directed Chavan, who had deferred deposing before the commission on previous occasions, to be present on Wednesday.
Besides Chavan, another former chief minister, Shivajirao Nilangekar, who was revenue minister when Adarsh was allotted the plot, and water resources minister Sunil Tatkare have also been summoned by the commission.
Nilangekar has been asked to appear on Monday. Tatkare will appear before the commission on Tuesday to explain decisions taken by the urban development department when he was junior minister in the department.
The main allegations against Chavan are that he was responsible for inclusion of more civilians in the list of members of the society. Among the members of the society were his late mother-in-law, Bhagwati Sharma, and sister-in-law, Seema Sharma.
Chavan was the revenue minister between October 18, 1999 and January 16, 2003 and later went on to become the chief minister between December 8, 2008 and November 9, 2010 till he was asked to vacate his chair in the wake of the Adarsh scam.
The Adarsh scam grabbed headlines when it came to light that a nexus of bureaucrats, army officials and politicians colluded to secure plush apartments in the upmarket Colaba area.
While the army has been claiming ownership of the land, the probe commission in its first report has ruled that the land belonged to the state government.
The commission has also pointed out that there was no reservation on the land for Kargil martyrs. Chavan had tried to defend himself, saying he had no role to play when the land was allotted in 2004, as he was not revenue minister then.
He also said that his relatives had offered to surrender their membership.
However, Chavan has also been named as an accused by the Central Bureau of Investigation (CBI) in its First Information Report (FIR).