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The most successful data-sharing operation for REALTORS® and Real Estate Professionals in the state of Michigan

Current Live Members (Participants)

  1. Ann Arbor Area Board of REALTORS®

  2. Branch County Association of REALTORS®

  3. East Central Association of REALTORS®

  4. Hillsdale County Board of REALTORS®

  5. Jackson Area Association of REALTORS®

  6. Greater Shiawassee Association of REALTORS®

  7. Lenawee County Association of REALTORS®

  8. MiRealSource Multiple Listing Service 

  9. Montcalm County Board of REALTORS®

  10. Monroe Down River Regional Association of REALTORS®

  11. Saginaw Board of REALTORS®

  12. Realcomp II Ltd.



Cost Reduction

Time Savings


More data available to Real Estate Professionals

MLS of Choice 

Standardization of the Data

Excellent Security 


Progressive Leadership

Flexibility for Brokers


Supporting Broker Profiles



Mentioned in the 2012, 2013, 2014 & 2015 
HOUR MEDIA Real Estate All-Star Magazine

MiRealSource’s Web-based software offered to REALTOR® members is used for collecting, searching, and distributing listings for brokers and agents. The MiRealSource MLS system was rated No. 1 in both the 2013 and 2014 national surveys. MiRealSource is a member of the Great Lakes Repository (GLR), which allows REALTORS® of participating Multiple Listing Services to share data and work together throughout the state. The GLR benefits sellers by giving their home more exposure to other agents, while also providing more inventory for buyers.




Is your MLS or Association interested in joining this innovative movement for the real estate industry? Please contact us and we will be happy to get you started! 

The Great Lakes Repository is Still Going Strong


We are at the point now where everyone realizes the great benefits of the Great Lakes Repository (GLR) and supports its’ overall goal. Data sharing has been a goal of MLS’s and REALTORS® for many years, and the GLR has made terrific headway in creating a statewide database for data sharing.  The GLR is a single database for multiple MLS’s to share MLS data with other participating MLS’s in each of the individual MLSs home systems.  

Dave DeRees, President 

Great Lakes Repository

September 21, 2015 



The Great Lakes Repository Expands Offers of Cooperation and Compensation Among 19 Participating Organizations Sharing Data


In the real estate industry, the collection and distribution of real estate listing data has been a hot issue for many years, and The Great Lakes Repository (GLR) has made tremendous headway toward solving those data issues. The GLR is comprised of a group of MLSs and REALTOR® Associations (participants) in Michigan that have agreed to share listing data with other participants using a repository method of sharing. Under this method of sharing data, all participants of the GLR run their own MLSs; enforce their own set of rules; manage their own membership; control their own MLS products, but cooperate by sharing listing data in one central location.


The sharing of listing data benefits all GLR Members and the consumer by providing all the listings data to all GLR Members, and at the same time eliminating the need for a REALTOR® to belong to more than one MLS, i.e.: offering MLS of choice. Over the last seven and a half years, the GLR has grown from zero to 11 Members all sharing data in their home database.


The GLR recently finalized agreements with the eight (8) REALTOR® Associations that are Shareholders of Realcomp II Ltd., an MLS in Farmington Hills, MI. “We are excited to welcome these new Members to the GLR, giving the GLR a total of nineteen (19) Members representing twelve (12) MLSs sharing data,” said Dave DeRees, President of The Great Lakes Repository.


Currently, the data is being mapped and is scheduled to go live on March 1, 2016. Once the new data is live, the GLR will be estimated to have over 55,000 active listings in the state, and is also estimated to have 67% of the REALTORS® in Michigan and 66% of all active and historical listings in the state.


Powered by CURE Solutions Group, an MRIS subsidiary, the GLR is able to overcome the technical barriers associated with sharing MLS content through multiple geographic areas. This makes the GLR an indispensable resource for brokers and agents in the Great Lakes area.

“MRIS is thrilled that the GLR is making great strides in expanding access to listing information across the state of Michigan,” said Jeff Jennings, MRIS Director of Strategic Alliances. “Over the past seven years, the GLR has proactively continued to make it easier for brokers and agents to access the information they need, and we look forward to their continued growth and success.”


“The sharing of data fields alone does not make for successful data sharing,” said DeRees “The GLR shares offers of cooperation and compensation.”  It also allows for sharing of IDX information, shared data on public-facing MLS websites and apps (subject to opt-outs), and the use of the shared data in third-party programs such as CMA and statistical software.  The goal of the GLR is to one day have a statewide database with MLS of choice for real estate professionals.






Great Lakes Repository Members (19 Participants):

Ann Arbor Area Board of REALTORS®

Dearborn Area Board of REALTORS® *

Detroit Association of REALTORS® *

East Central Association of REALTORS®

Eastern Thumb Association of REALTORS® *

Greater Metropolitan Association of REALTORS® *

Grosse Pointe Board of REALTORS® *

Greater Shiawassee Association of REALTORS®

Hillsdale County Board of REALTORS®

Jackson Area Association of REALTORS®

Lenawee County Association of REALTORS®

Livingston County Association of REALTORS® *

Lapeer and Upper Thumb Association of REALTORS® *

MiRealSource MLS

Monroe County Association of REALTORS®

Montcalm Downriver Regional Association of REALTORS®

North Oakland County Board of REALTORS® *

Saginaw Board of REALTORS®

*Representing Realcomp II Ltd.

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