Three tenants have signed full-floor leases at Brause Realty’s 21 West 38th Street, bringing the Midtown office building to 100 percent occupancy.

Environmental consulting company Partner Engineering and Science signed a new 4,465-square-foot lease on the entire eighth floor of the 17-story building. Meanwhile, the American Lung Association and engineering consultant GPI/Greenman-Pedersen each signed 4,465-square-foot renewals for their full-floor spaces on the third and sixth floors, respectively, according to landlord broker Lee & Associates NYC.