Details of the transaction were not released, but a spokeswomanfor GVA Smith Mack says eResearch has signed a long-term lease forthe concourse, ninth and 10th floors. Office space in the buildingis listed at $25.50 per sf. eResearch was represented by Jeff Mackand Bill Finnegan of GVA Smith Mack. Jim Mullarkey of GVA SmithMack negotiated for the property owner, Santa Ana, CA-based Grubb& Ellis Realty Investors LLC.

The spokeswoman says eResearch chose to move because its rapidexpansion created a need for more space. The new space was chosenfor 1818's location in center city Philadelphia, near the company'semployee base as well as institutions of higher education and localhealthcare providers. eResearch provides technology-based productsand services that allow for the collection, interpretation anddistribution of cardiac safety and clinical data.

The 981,743-sf building, developed in 1971, is 83% leased. A$5-million capital improvement initiative included a $1.5-millionredesign and restoration of the two-story lobby, installation ofnew lighting and signs on the exterior and the addition of newproperty surveillance and parking automation equipment to the385-space parking garage.