- What data is shared between the MLSs?
- How may subscribers use that data?
- How may each association and its MLS use the combined data?
- For what purposes can each license that compilation?
- What happens if there is disagreement about a use?
- How is each group responsible for protecting the data?
- How is copyright registration handled?
- What happens in event of a lawsuit over copyright infringement?
- What happens to the data and all the derivative uses (statistical reports, CMAs, AVMs, etc.) if the data share is ended?
Data Sharing – Viable, But Not an Easy Answer
In an older post, it was pointed out that “Data shares – at least in most markets – are not the answer.” That doesn’t mean that they are not a useful tool for MLSs for solving issues relating to Overlapping Market Disorder – including creating consolidated data for MLS and IDX/VOW use, helping to eliminate duplicate fees, and more. I have, in fact, helped several clients to establish data shares in our industry where it was not feasible to merge MLSs for political reasons. However, data sharing provides limited benefits in comparison with MLS consolidation, and it’s not as simple as some who just look at the technical aspects of it might think. While there are some very successful data share arrangements, in recent years some data shares arrangements have collapsed as organizations run into the complexities that they thought they were avoiding.
There are a variety of areas of conflict that occur when a data share is set up:
Initial and Ongoing Costs. Data shares most often fail because of costs, especially because of the vendor and staff time needed to maintain the data share which are unanticipated and cause tensions between groups. This goes beyond having a vendor charging to map the data from one system to another as it moves from one system to and from the other. For the data to be usable in one compilation, it really needs to be as similar as possible in both systems. That means ideally having similar property types and statuses, as well as field names and field values – especially how amenities are grouped. If that’s not done, searches and reports can become ungainly. What seemed simple really ends up taking long negotiation between data share parties. Then, over the longer term, data share parties will want to make changes to their fields – in a data share those can’t be made without coordinating between the two systems and potentially incurring additional cost. This is not just vendor time and cost – but it takes leadership and staff time to maintain. It can be frustrating when one group wants to make changes and there is push-back from the other(s). With the consolidation of MLSs, one goes through this process once, decisions are made, and then the single MLS is more efficient moving forward.
Data Use. Many questions related to data use must be answered before MLSs establish a data share. For example: