Grand Rapids Commercial Real Estate : Realvesco Properties

About Realvesco Properties

Founded in 1981 by Thomas L. Koster, Realvesco Properties specializes in the development, property management, and leasing of commercial office, retail, and industrial properties throughout the West Michigan.

Headquartered in Grand Rapids, Michigan, Realvesco Properties is well
known for its success in meeting the
needs of small and medium size
companies who have created the
relatively stable economy we enjoy in
Western Michigan.


Or Team : Realvesco Staff

THOMAS L. KOSTER, Developer and Broker

Tom Koster, the president and founder of Realvesco Properties, is highly qualified in commercial and industrial real estate.  He has experience in real estate development with both William Koster & Associates and Markland Development, in addition to having been a salesperson with Westdale Realty Co. Tom founded Realvesco Properties over thirty years ago and has developed and re-developed over two dozen properties in that time.

Tom’s expertise and strengths lie in the developing of office and industrial properties and meeting the needs of propsective users/tenants.  In addition to holding the SIOR and CCIM designations, Tom is very active in the community and has served as a Director of the Grand Rapids Real Estate Board.

Memberships include:

  • Building Owners and Managers Association (BOMA)
  • Society of Industrial and Office Realtors (SIOR)
  • Certified Commercial-Investment Members (CCIM)

SANDRA COOLSEN, Property Manager

With thirty-three years experience in the building and real estate market, Sandi Coolsen is well respected as a property manager.  She is a licensed real estate agent specializing in the industrial and commercial markets.  Her rapport with tenants and contractors earns her praises and admiration throughout the real estate community.

Currently Sandi manages over 1,000,000 rentable square feet of office, warehouse, retail, and flex space in the Grand Rapids area.

KIM FORER, Accountant

With over twenty-five years experience in accounting, Kim's expertise as our accountant brings a valuable service to our company.  As part of the property management team, Kim works with Sandi to provide the investors and tenants with accurate record keeping and quick response times.

RACHEL SAL JANSHESKI, Real Estate Associate & Project Manager

After graduating from law school in 2010, Rachel began working with Tom in leasing in both office and industrial markets, and in 2012, Rachel became a project manager on tenant improvement projects and works with Tom on development projects in addition to working as a real estate salesperson.  With Rachel's understanding of the real estate market, real estate law, real estate development and construction, Rachel works with prospective tenants and Realvesco's current tenants with a full service approach.


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Realvesco Properties : Grand Rapids Commercial Realtors
4180 44TH STREET SE  |  GRAND RAPIDS MI 49512  |  616-698-7600
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