The company owns and operates 8.5 million square feet of commercial real estate throughout Oregon and southwest Washington state.
In 1991, the company partnered with the Hillman Group to develop a 24-story office building in downtown Portland at 1000 Broadway, blocks from Pioneer Courthouse Square.
[9] In June 2019, Service Employees International Union Local 49 filed a lawsuit seeking to make this happen.
[10] A company by the name of Cornerstone Security had a contract to patrol Delta Park Center by TMT Development and it was asked to patrol the area leased to the tenant OBRC BottleDrop to monitor fights and drug dealing.
[11] In May 2021, a guard working for Cornerstone who was not licensed to carry a gun on the job fatally shot a subject in a vehicle near BottleDrop who had been previously trespassed for matters relating to alleged pallet theft.