Other Valuation Services:


  • Appraisal review assignments completed for a variety of clients including attorneys and state and federal government agencies.


  • Sales studies, rental surveys, and other consultation services provided for a wide variety of clients.

Kara Hart is a licensed apprentice appraiser in North Dakota and Minnesota.  Kara holds a BBA degree in Marketing and earned an MBA from the University of North Dakota.  She grew up on a farm and is an associate member of the American Society of Farm Managers and Rural Appraisers. 

A Division of Advanced Ag Services, LLC

Karissa Grube is a licensed apprentice appraiser in North Dakota and Minnesota.  Karissa grew up on a farm and holds a BBA degree in Management from the University of North Dakota.  She is an associate member of the American Society of Farm Managers and Rural Appraisers.

Real Estate Appraisals / Sales / Consulting

​Building on a respected tradition of integrity, Roos & Associates is committed to providing clients with credible and reliable valuations in clearly written reports, delivered in a timely manner.

About Us

Les Roos, ARA, has been a professional real estate appraiser since 1986.  He earned the Accredited Rural Appraiser (ARA) designation in 1994 from the American Society of Farm Managers and Rural Appraisers (ASFMRA), the nation's preeminent organization for professionals who provide management, consultation, and valuation services on rural and agricultural assets. Roos is an active member of the ASFMRA and is a past president of the North Dakota Chapter of the ASFMRA.


Licensed in North Dakota and Minnesota as a Certified General Real Property Appraiser, Roos has completed a wide range of appraisal assignments in both states.  In conjunction with various assignments, he has also served as an expert witness in both state and federal courts.

Real Estate Sales:


  • Roos & Associates is licensed as a real estate brokerage firm in North Dakota and Minnesota.


  • Les Roos is a licensed real estate broker in North Dakota and Minnesota. 


  • Karissa Grube and Kara Hart are licensed real estate salespersons in North Dakota and Minnesota.