The Cornerstone Group

The Cornerstone Group

About Us


Diane Devon

Portfolio Manager

As Portfolio Manager, Diane Devon oversees the day-to-day operations of all of our residential properties throughout the Twin Cities Metro and outlying communities. She supervises and works closely with a staff team of about 35 to ensure the assets meet the owners’ philosophy, vision and goals over the life of the investment. She writes annual budgets with the Managers and keeps the operation spending inside the approved budgets by keeping the buildings full, clean and with rent collected. Under her supervision and through the on site staff teams, residents are well taken care of resulting in low turnover. Diane and her qualified team provide a high standard of housing that is an asset to each community. Diane has over 27 years of property management experience managing market rate and affordable communities totaling over 10,000 units throughout the United States. Her depth, of management experience, spans across all classes of market rate and affordable residential housing, including new construction, acquisitions, rehabs and repositioning. She has several years experience working with marketing and leasing ups on multiple (at the same time) new construction communities bringing them to stabilization. Senior and student housing have been her past time specialties. Diane previously worked on the Stuart Companies and Shelter Management Company teams as a Portfolio Manager. 

Education & Accreditations

  • Indiana University
  • Minnesota Housing Association Certified Resident Manager
  • HUD Certified Occupancy Specialist