Timelines for MLSs Transitioning 100% to RESO Web API and Sunsetting RETS
The Real Estate Transaction Standard (RETS) is a data transport protocol that was created 20 years ago by a coalition of real estate industry thought leaders and the National Association of REALTORS®. This group eventually created RESO and its Data Dictionary. RESO deprecated RETS and developed its successor, the RESO Web API.
The industry’s utilization of the RESO Web API is accelerating quickly. At least 90% of MLSs in the industry have RESO-certified Web API services.
In recent years, vendors, brokers and agents have increased their usage of MLS Web API data feeds from less than 5% of the industry to over 40%. More than 60% of MLS organizations have committed to a full conversion.
RESO tracks the migration to the improved Web API standard. If your organization is not listed, please contact us to be included. Please consult our free Web API Transition Guide for advice.
Committed to 100% Web API Transition
| Big Sky Country MLS bridgeMLS Canopy MLS (Canopy Realtor® Association) Elko County Association of REALTORS® Grand Junction Area REALTOR® Association Greater McAllen Association of REALTORS® Gulf Coast MLS (Mobile Area Association of REALTORS®) Harrison District Board of REALTORS® Heartland MLS Incline Village REALTORS® Kanawha Valley Board of REALTORS® MARIS MLS MIAMI REALTORS® MLS MIBOR Broker Listing Cooperative® Martin County REALTORS® of the Treasure Coast Midwest Real Estate Data (MRED) North Texas Real Estate Information Systems (NTREIS) Omni MLS |
REALTORS® Association of Citrus County REALTORS® Association of Northwestern Wisconsin REALTOR® Association of Franklin & Gulf Counties REsides Real Estate Board of New York (REBNY) Realtracs Regional Multiple Listing Service (RMLS) River Counties Association of REALTORS® Santa Fe Association of REALTORS® South Texas MLS Southwest MLS (Greater Albuquerque AOR) Stellar MLS Triad MLS UtahRealEstate.com Vail Multi-List Service ValleyMLS.com West Alabama Multiple Listing Service Western Arizona REALTOR® Data Exchange (WARDEX) |
- Organization
- Progress
- Projected
- Global MLS
- 99%
- 10/1/2023
- Kerrville Board of REALTORS®
- 99%
- TBD
- Spokane Association of REALTORS®
- 99%
- 8/1/2023
- Tulare County MLS
- 99%
- 8/2/2023
- Sunflower Association of REALTORS®
- 99%
- TBD
- RMLS Alliance
- 99%
- 6/30/2023
- Martha's Vineyard MLS
- 99%
- TBD
- IRES MLS
- 98%
- TBD
- MLS Now
- 97%
- 6/30/2023
- Tehachapi Area Association of REALTORS®
- 97%
- 12/31/2023
- Alaska Multiple Listing Service
- 97%
- 3/15/2023
- Cape Cod & Islands Association of REALTORS®
- 95%
- TBD
- Palm Beach Board of REALTORS®
- 95%
- TBD
- NorthstarMLS
- 95%
- TBD
- Hinesville Area Board of REALTORS®
- 95%
- 10/1/2023
- Central Texas MLS (CTXMLS)
- 92%
- 12/31/2023
- Intermountain MLS
- 90%
- TBD
- Northwest Multiple Listing Service (NWMLS)
- 90%
- TBD
- Coeur d'Alene Multiple Listing Service
- 90%
- 12/31/2023
- Lawrence Board of REALTORS®
- 90%
- 10/1/2023
- MLS of Greater Cincinnati (CincyMLS)
- 88%
- 10/31/2023
- Allegheny Highland Association of REALTORS®
- 85%
- TBD
- Bay East Association of REALTORS®
- 85%
- TBD
- realMLS (Northeast Florida Multiple Listing Service)
- 85%
- 12/31/2023
- High Country Association of REALTORS®
- 83%
- TBD
- Unlock MLS (Austin Board of REALTORS®)
- 80%
- 12/31/2023
- Northeast Iowa Regional Board of REALTORS®
- 80%
- 12/31/2023
- First Multiple Listing Service (FMLS)
- 78%
- TBD
- Contra Costa Association of REALTORS®
- 78%
- 12/31/2023
- Aspen Glenwood MLS
- 75%
- 8/30/2023
- Northern Kentucky Multiple Listing Service
- 75%
- 12/1/2023
- Reelfoot Regional Association of REALTORS®
- 73%
- 6/30/2023
- OneKey® MLS
- 70%
- 7/1/2023
- MLS Property Information Network (MLS PIN)
- 70%
- 12/31/2023
- Central Panhandle Association of REALTORS®
- 70%
- TBD
- Northwest Ohio Real Estate Information Service (NORIS)
- 66%
- TBD
- Monmouth Ocean Regional Multiple Listing Service
- 65%
- 12/31/2023
- MLSOK
- 63%
- TBD
- Las Vegas REALTORS®
- 62%
- 12/31/2023
- Grand County Board of REALTORS®
- 61%
- TBD
- Lubbock Association of REALTORS®
- 60%
- TBD
- Tuolumne County Association of REALTORS®
- 60%
- TBD
- REALTOR® Association of Acadiana
- 60%
- 12/31/2023
- Fargo-Moorhead Area Association of REALTORS®
- 60%
- 12/31/2023
- Highland Lakes Association of REALTORS®
- 60%
- 12/31/2023
- Williamsburg Multiple Listing Service
- 57%
- TBD
- Central Virginia Regional MLS
- 51%
- TBD
- Battle Creek Area Association of REALTORS®
- 50%
- TBD
- Branch County Association of REALTORS®
- 50%
- TBD
- Greater Kalamazoo Association of REALTORS®
- 50%
- TBD
- Greater Regional Alliance of REALTORS®
- 50%
- TBD
- Hillsdale County Board of REALTORS®
- 50%
- TBD
- Jackson Multiple Listing Service
- 50%
- TBD
- Mason Oceana Manistee Board of REALTORS®
- 50%
- TBD
- Montcalm County Association of REALTORS®
- 50%
- TBD
- Southwestern Michigan Association of REALTORS®
- 50%
- TBD
- St. Joseph County Association of REALTORS®
- 50%
- TBD
- West Central Association of REALTORS® (MI)
- 50%
- TBD
- West Michigan Lakeshore Association of REALTORS®
- 50%
- TBD
- Golden Isles Association of REALTORS®
- 50%
- TBD
- Houston Association of REALTORS®
- 50%
- TBD
- Lake Martin Area Association of REALTORS®
- 50%
- 13/31/2024
- Teton Board of REALTORS®
- 50%
- 11/30/2023
- REALTORS® Association of Indian River County
- 49%
- TBD
- REcolorado®
- 45%
- 12/1/2023
- Bagnell Dam Association of REALTORS®
- 45%
- TBD
- Georgia MLS
- 40%
- TBD
- Central Illinois Board of REALTORS®
- 39%
- TBD
- State-Wide MLS
- 36%
- TBD
- Triangle MLS
- 35%
- 7/1/2023
- Marco Island Area Association of REALTORS®
- 35%
- TBD
- Longleaf Pine REALTORS®
- 35%
- TBD
- Capital Area Technology & REALTOR® Services
- 31%
- TBD
- Savannah Multi-List Corporation
- 31%
- TBD
- West Branch Valley Association of REALTORS®
- 30%
- 7/1/2023
- Western River Valley Board of REALTORS®
- 30%
- TBD
- MetroList
- 30%
- 12/31/2023
- Prescott Area Association of REALTORS®
- 30%
- 12/1/2023
- Montgomery Area Association of REALTORS®
- 28%
- TBD
- Columbus and Central Ohio Regional MLS
- 26%
- 1/1/2025
- Aiken Association of REALTORS®
- 25%
- TBD
- Columbia Board of REALTORS®
- 25%
- 12/31/2023
- Summit MLS
- 25%
- TBD
- Greater Lansing Association of REALTORS®
- 24%
- TBD
- New Mexico MLS
- 20%
- 12/31/2024
- Flint Hills Association of REALTORS®
- 20%
- 7/1/2023
- Heart of Missouri Board of REALTORS®
- 20%
- 12/31/2023
- Coastal Carolinas Association of REALTORS®
- 17%
- 7/15/2023
- Central Iowa Board of REALTORS®
- 15%
- TBD
- Firelands Association of REALTORS®
- 13%
- TBD
- Sanibel & Captiva Islands Association of REALTORS®
- 10%
- TBD
- MLS Technology
- 10%
- 12/31/2023
- Permian Basin Board of REALTORS®
- 10%
- TBD
- West Penn Multi-List
- 10%
- TBD
- Colorado Real Estate Network (CREN)
- 10%
- 12/31/2024
- Northeast Oklahoma Board of REALTORS®
- 10%
- 7/31/2023
- Maui MLS (REALTORS® Association of Maui)
- 8%
- TBD
- Maine Listings
- 8%
- 12/31/2023
- Des Moines Area Association of REALTORS®
- 7%
- TBD
- Bakersfield Association of REALTORS® / GEMLS
- 5%
- TBD
- Northeast Wyoming REALTOR® Alliance
- 5%
- 12/31/2022
- Ozark Gateway Association of REALTORS®
- 5%
- TBD
- Baldwin REALTORS®
- 5%
- TBD
- Northeast South Dakota Association of REALTORS®
- 5%
- TBD
- Naples Area Board of REALTORS®
- 5%
- 1/1/2024
- Northeast Georgia Board of REALTORS®
- 5%
- TBD
- Pueblo Association of REALTORS®
- 5%
- TBD
- Silver City Regional Multiple Listing Service
- 5%
- 12/31/2023
- Tillamook Board of REALTORS®
- 3%
- TBD
- Arkansas Valley Board of REALTORS®
- 3%
- 12/31/2023
- Southern Missouri Regional MLS
- 3%
- TBD
- San Antonio Board of REALTORS®
- 3%
- TBD
- San Juan County Board of REALTORS®
- 3%
- 1/1/2024
- San Francisco Association of REALTORS® MLS
- 2%
- 3/30/2025
- Sedona Verde Valley Association of REALTORS®
- 1%
- 6/30/2023
- Greater Alabama MLS
- 1%
- 12/31/2023
- Humboldt Association of REALTORS®
- 1%
- 12/31/2023
- New River Valley Association of REALTORS®
- 1%
- TBD
- Realcomp
- 1%
- 12/31/2023
- East Tennessee REALTORS®
- 1%
- TBD
- Calaveras County Association of REALTORS®
- 1%
- 12/31/2023
- Lake Havasu Association of REALTORS®
- 1%
- 11/30/2023
- New York State Alliance of MLSs
- 1%
- TBD
- Santa Barbara Multiple Listing Service
- 1%
- 1/31/2024
- South Central Kansas MLS
- 1%
- 7/31/2024
- Tennessee Virginia Regional MLS
- 1%
- 12/31/2023
Additional MLSs Committed to Web API Transition
| BeachesMLS Big Bear Association of REALTORS® Billings Multiple Listing Service Bluegrass REALTORS® Central Susquehanna Valley Board of REALTORS® MLS Charlottesville Area Association of REALTORS® East Central Indiana Board of REALTORS® East Central South Dakota REALTORS® Greater Tyler Association of REALTORS® Greenbrier Valley Board of REALTORS® Hattiesburg Area Association of REALTORS® HiCentral MLS (Honolulu Board of REALTORS®) Lawton Board of REALTORS® Lincoln County Board of REALTORS® (NE) Lowcountry Regional MLS |
Mammoth Lakes Board of REALTORS® MLS Mason City Multiple Listing Service Metro MLS MLS of Southern Arizona MLS United Mount Rushmore Area Association of REALTORS® Mountain Central Association of REALTORS® NorthWest Illinois Alliance of REALTORS® Outer Banks Association of REALTORS® REALTOR® Association of Southern Minnesota ROAM MLS Ruidoso/Lincoln County Association of REALTORS® Southern Oregon MLS The MLS West Central Association of REALTORS® (MO) |
