The second building will have 16 floors and 148 apartments.
The investment is estimated at EUR12.5 million.
The first building, consisting of 135 apartments, is nearing completion and is almost fully booked, the company said.
“We estimate around 60% of the apartments in Tower Two will be pre-leased by the end of this year,” said Valentin Morar, CEO Wallberg. He added 30% of the building has already been pre-leased.
The XCity Towers project will consist of 955 apartments when finished.