RETS stands for Real Estate Transaction Standard, which facilitates data transfer between different data partners in the real estate industry. To learn more about RETS visit RETS.org.
In order to utilize RETS, the MLS must have contracted with SEI for the development of the RETS server. There is a one-time cost to the MLS for setup of the RETS server. Beyond the setup, contracts between SEI and participating offices are created and monthly fees are applicable.