Our Team

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Corey DeVries- President

Corey started Cornerstone in 2009, which has quickly grown into Cornerstone Real Estate Management, Cornerstone Association Management and Cornerstone Building and Maintenance.  Prior to starting Cornerstone, Corey worked on the family farm raising cows and pigs and working for his father in his construction business, DeVries Builders.  While working for DeVries Builders, Corey started building and developing his own income properties, creating his passion for Real Estate.  After working over 20 years building custom homes and remodeling for DeVries Builders, Corey had the desire to start his own company.  Cornerstone was started in the basement of his home with around 30 units to manage.  He has been blessed with growth and now Cornerstone manages around 1,500 units throughout West Michigan.  Corey is a graduate from Holland Christian High School and has both a Builder and Broker license.  When not working, Corey enjoys traveling with his wife Heather and his 3 daughters(Brooke,Kenzie and Ashey), one of their favorite locations is the Grand Tetons around Jackson, Wyoming.  Corey is an avid hunter and spends most of his fall bow hunting deer in Missouri and elk in Colorado, but nothing beats hunting with his daughters. His other interests include softball, fishing, hiking, camping and watching sports.


Tim Lohr- Business Manager

Tim joined Cornerstone in August of 2014 taking on the role of Service Coordinator in the Building and Maintenance Company and most recenty the role as Business Manager ,overseeing all three companies.  Tim is a graduate of Grand Valley State University with a degree in Broadcasting/Communications and has held roles in inside sales, purchasing, scheduling, and business management in the past.  When not at the office, Tim enjoys spending time with family, traveling to amusement parks with his wife and two coaster enthusiast sons and following Michigan football.  You can also hear Tim on The Pledge radio station every friday night during the fall and winter, covering High School football and basketball.


Karie Moore- Administrative Assistant

As the newest member of the Cornerstone family Karie is the smiling face you'll see at the front desk every day!  With 6+ years of property management experience she will be processing payments and answering phones.  She will also assist in the day to day running of the office and doing whatever she can to help both tenants and our staff.  When she’s not in the office Karie enjoys antiquing, painting, reading and spending time with her family. 




Martin Johnson-Service Technician

Martin joined the Cornerstone team in March 2017, working as a Service Tech within the company.  Prior to coming to Cornerstone, Martin was a Service Technician at Speedtech in Hudsonvile for 3 years and worked in Construction 10 years before that.  Martin is married and they are expecting their first child.  Outside of Cornerstone, Martin enjoys working on cars and hunting.





Kristen Smith- Leasing Manager

Kristen manages all aspects of our rental properties.  She has over 18 years of experience in property management and is a Licensed Real Estate Agent.  She recently re-joined the Cornerstone team in October 2018.  She was previously part of our team from 2011-2015.  In her spare time she enjoys fishing and spending time with her husband and their 5 kids.


Amy Hopp- Leasing Agent

Amy joined the Cornerstone team in 2014. She is a licensed real estate agent and works primarily as a Leasing Agent for the Real Estate Company.  Amy enjoys meeting new people and working to find just the right home for prospective tenants.  When Amy's 6 children and 3 grandchildren are not keeping her busy, she enjoys walking, reading and volunteering at her church.





Kirk Lydy- Association Manager

Kirk recently joined the Cornerstone team in August of 2016, as a Condo Association Manager.  His background  is well diversified as a manager as he has spent the last nine years in Property Management.  Kirk really enjoys being outdoors, either golfing, backpack hiking or in his garden.  During the winter month's he likes being in his wood shop building furniture.  What he enjoys most is spending time with his family and watching his grandkids grow up.


Liz Corkins- Association Manager

Liz joined the Cornestone team in August of 2015 and is the Assistant to the Condo Association Managers.  She answers phones, does the Condo billing and fills in the gap for the Managers .  She has a degree in Education and taught for 5 years.  Liz is no stranger to the rental business as she has owned and managed a rental home for 20 years.  Outside of the office, Liz enjoys spending time with her family, camping and hiking.


Marci Stevens- Association Manager

Marci joined the Cornerstone team in August of 2018 as a Condo Association Manager.  She has 5 years’ experience in property management.  Marci has her Associates Degree in Business Management from Davenport University.  Marci’s life outside of work revolve around her 3 sons and their many sporting activities.  She also enjoys reading and camping with family. 




Nate Broekhuizen- Real Estate Salesperson

Nate Broekhuizen is our Realtor who currently provides real estate services to buyers and sellers located in and around West Michigan. Always holding client satisfaction as his highest priority, Nate works hard to make the entire buying and selling experience as productive and enjoyable as possible. Clients working with Nate never fail to appreciate his honesty, professional integrity, and excellent communication. To learn more about Nate’s real estate services, please don't hesitate to give him a call today. In his free time he enjoys golfing, boating, reading, and hanging out with friends and family! 









2010 Cornerstone Real Estate Management, LLC. All Rights Reserved.  

Cornerstone Real Estate Management, LLC
12048 James Street
Holland, MI 49424
Tel: (616) 741-9600