Flagler officials wouldn't disclose lease terms or occupancy figures. Area brokers estimate the eight-building campus is 90% leased.

Fairfield's space is in the 190,221-sf Building 500 where it occupies 60% of the building. Orlando-based Schwartz Electro-Optics Inc., the only other tenant, occupies 76,221 sf on an estimated 10 year lease signed in September 2001 for about $15 million, according to GlobeSt.com research. That lease brings Building 500 to 100% occupancy.

Based on an October 2001 lease, when Fairfield initially took 97,000 sf on an estimated 10-year lese for an aggregate value of about $19 million or $20 per sf, area office brokers tell Globe St.com on condition of anonymity the 17,000-sf expansion at an estimated $23 per sf would have an aggregate value of about $3.91 million.