Darrell Dexter says he will release details on Tuesday, but he told reporters the lease was handled appropriately by the department officials.
He says it's clear that bureaucrats weighed their options and considered alternatives before acting.
Dexter unexpectedly put the $289,000 deal on hold last week after the opposition parties questioned whether the 10-year lease with the non-profit Cornwallis Park Development Association was a wise use of public money.
The association recently bought the property for $162,500, according to an online property listing.
The opposition parties say the lease should have been put to tender.