Constellation Agency leases 21st floor of One WTC

Advertising company Constellation Agency has signed a lease for 48,000 square feet at One World Trade Center — the entire 21st floor. The agency is subleasing the space from Advance, which is offering some 400,000 square feet of space for sublease at One World Trade. In total, the company, which is the parent of Conde Nast, has 1.1 million square feet. Constellation Agency is moving from 110 William Street. Recently Reddit signed a sublease for