PHILADELPHIA, PA — PernaFrederick Commercial Real Estate has negotiated six lease agreements totaling 22,113 s/f of office space in two buildings situated within the Spring Arts Neighborhood. The space contracts have a combined aggregate rental of $3.2 million and were arranged for the building owners by the brokerage team of Joe Viturello and Keith Kiner at PernaFrederick. In the largest of the agreements, Ameribest expanded its existing offices with the lease of another 6,924 s/f on the second floor of 990 Spring Garden. With that expansion planned for the third quarter of this year Ameribest will occupy 17,330 s/f in the structure.