While four flats have already been allotted, another 21 are being reserved in a housing complex constructed by his company, Karrm Infrastructures Pvt. Ltd, at their Thane project.
The Central Reserve Police Force (CRPF), whose jawans were killed in the attack, expressed "gratitude" to Vivek Oberoi for his gesture.
A senior CRPF officer said preference would be given to jawans from Maharashtra as the flats were in that state.
Recently, Bollywood actor Akshay Kumar had donated Rs 9 lakh each to the families of the 12 CRPF personnel killed in the March 11 Naxal ambush in Chhattisgarh.
Olympic bronze medallist badminton player Saina Nehwal too had donated Rs 50,000 each to the 12 families.
The Union Home Ministry has launched a website --www.bharatkeveer.gov.in -- to receive public donations for the families of jawans and officers of the Central Armed Police Forces killed on duty.