The expansion runs co-terminus with the original lease at 300 E. John Carpenter Frwy., which expires Jan. 31, 2018, Bill Lokey, first vice president for CB Richard Ellis in Dallas, tells GlobeSt.com. He says the tenant gets keys to the extra room June 1. Jeff Ellerman, executive vice president for Dallas-based Staubach Co., was Heidelberg's tenant rep.

Lokey says the expansion deal was pulled together immediately after Heidelberg bought Hanson last year. "It was night and day for Ellerman and me for 14 days," Lokey says of the push to bed down the deal for the second floor, giving the tenant seven full floors in the 401,650-sf office building. Lokey's team included vice president John Fancher, senior associate Allison Fannin and associate Susannah Wallace.

The expansion edges occupancy to 83%. The quoted rate is $23.50 per sf plus 50-cent annual bumps. The building was bought in mid-October 2006 by Los Angeles-based CB Richard Ellis Investors Strategic Partners LLC.