Gladstone Commercial Corporation announced that it has executed an 8-year lease extension with Elster Solutions, LLC ("Elster") at its 58,926 square foot flex /R&D building in Raleigh, North Carolina. Elster is owned by Honeywell International Inc. ("Honeywell"), who is the guarantor on the lease. The property was purchased by Gladstone Commercial in 2003 and has been leased to Elster since that time.