After a more than 20-year ownership, The RMR Group has sold Reserve at Bull Creek, a 131,275-square-foot office property in Austin’s Northwest submarket. The buyer, Urbana Partners, secured a $24 million loan for the acquisition and repositioning of the three-building complex, Travis County records show. Meridian Capital Group placed the debt provided by Thorofare Capital Inc., an affiliate of Callodine Group.