Marking its ninth such transaction in the U.S. real estate arena in the past 16 months, Insignia/ESG has completed its previously announced acquisition of Jackson-Cross Co., a Philadelphia-based real estate firm with annual revenues of about $15 million. Financial terms for the transaction were not disclosed.

The acquisition gives Insignia/ESG a strong market position across the Philadelphia metro area that stretches into Southern New Jersey and Delaware, and will complement its operations in the New York City and Washington markets, company officials say. In the Philadelphia area, the company will conduct business as Insignia/ESG Jackson-Cross.