Buildings with single tenants, particularly financial companies and law firms, are more likely to have controlled access, property managers said.
In the other, a single corporate tenant has 80 percent of the space on an old lease at $11 a square foot.
The other buildings will be aimed at single tenants.
"You're not too married to a single tenant in one line of business."
A single tenant is in negotiations for the site.
The first phase, which opened in 1982, had three buildings of 90,000 square feet each, designed for single tenants, with no amenities.
One guy was going to use it for a single tenant.
The building did not sign up a single tenant until shortly after it was completed in 1993.
Even before a single tenant has moved into an office, the building has become famous here.
As of yet, the center, whose stores will begin opening early next year, has not a single tenant from Harlem.