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Company Capabilities

Principals/Owners/Key Leadership Team

Maribel Koella, CCIM, SIOR, FRICS, CRE

Owner and Principal Broker

865-777-3030
[email protected]

With over 30 years experience in commercial real estate, I derive distinct satisfaction from finding creative ways to negotiate solutions to seemingly impossible challenges and have assembled the resources needed to set my firm apart. 


As a member of the prestigious Counselors of Real Estate (CRE), I also enjoy providing strategic counseling to clients. My advice is grounded in my broad range of proficiencies in commercial real estate, project conceptualization and development, as well as investment experience. My expertise allows me to envision and evaluate options, advocate on behalf of my client’s interests, and develop winning strategies aligned with their business aims.

Below is a sampling of some of my counseling activities:

  • Consultations related to commercial property sales and transaction disputes
  • Counseling on lease negotiations and disagreements
  • Consultation on corporate real estate acquisition, sales, and development issues
  • Workout counseling
  • Non-profit counseling on issues such as lease negotiation, property purchase and sales, as well as evaluation of and strategic response to real estate donations
  • Portfolio evaluation and investment recommendations
  • Litigation support on real estate issues including expert witness testimony
  • Counseling regarding complex commercial real estate valuation issues

As the Director and Principal of a woman-owned, minority-owned business, I am keenly aware of the importance of strengthening community. Our firm has represented a number of local non-profits and I remain active in many community organizations. NAI Knoxville has earned Women’s Business Enterprise (WBENC) certifications as a woman-owned business and a woman-owned small business, and is also a member of the TMSDC.

Roger Moore, Jr., SIOR

President and Principal Broker

865-531-6400
[email protected]

Roger Moore, Jr. is a Principal Broker and serves as President of NAI Koella | RM Moore. With more than 25 years as a real estate agent and broker, Moore has amassed an impressive amount of experience in the sales and leasing of commercial properties. Roger began his career in the industry in 1980 as a licensed realtor selling real estate for his father, who, at the time, had the largest real estate company in the state of Tennessee. In 1995, following in his father's footsteps, Roger carried on a family tradition when he opened R.M. Moore Real Estate Company as a full-service firm and focused solely on commercial real estate. R.M. Moore Real Estate was named on the INC 5000 list of the fastest growing companies in 2007 and 2008 and in February of 2007 was recognized in the Top 101 in Commercial Real Estate by Business TN Magazine. Roger was also affiliated with Sperry Van Ness (SVN), where his transactions consistently ranked him in the Top 20 of SVN Advisors and in the SVN Partner's Circle for achieving highest total volumes amongst 900+ Advisors. In 2017, Roger combined business with that of Maribel Koella of NAI Knoxville to form the largest commercial real estate group in East Tennessee, now known as NAI Koella | RM Moore. Roger takes a very active role in the everyday functioning of the company. Not only does he assist in managing the firm and its many employees, but he also specializes in providing commercial property, tenant acquisition, and property management services through offices in both Knoxville and Sevierville, Tennessee.


Professional Associations & Designations

Leadership Knoxville Farragut and West Knoxville Rotary Knoxville Chamber of Commerce - Board Member Harmony Adoptions - Board Member Concord Sertoma - Past President Society of Industrial and Office Realtor (SIOR) The Young Entrepreneurs Organization Boy Scouts of America American Red Cross - Board Member Foster Care - Board Member Previously Licensed Real Estate Broker in both Kentucky and North Carolina

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