Tzetze Fly

To start the new year off right, Mike Wurzer composed a great open letter to all the public sites that expose listing data on behalf of brokers – including Yahoo!, Google, Trulia, and Zillow. It encourages the use of common data standards to make it easier, cheaper, and more efficient for brokers to upload listing data and keep it updated.

Right now, brokers have to spend time and money inputting their listing data into the numerous (and growing) consumer sites. If they develop technology to automate getting their data from the MLS or back office systems into one of these public sites, they still have to write code to interact with the API’s and data formats of each site individually. If you want your listings on a dozen sites, you must write code, test, debug, and keep updated with all dozen, and in a dozen different formats. I know that for RE/Max International (we run remax.com and handle around 75% of their US office traffic), the limiting factors for widespread syndication of their listing data has been cost and effort. Right now, we are syndicating listings for many offices to GoogleBase on their behalf, but that project has not been extended to other sites. Instead, it is left up to individual brokers or regions to handle their own listing syndication.

Over the past couple of years, the Schema Workgroup of RETS has done a fantastic job creating new XML schemas for real estate data sharing. The schemas describing listing data are particularly well developed, having been hammered on by MLS staff, MLS system vendors, client vendors, and other technical staff for over a year. Others in the real estate technology space would be well served to utilize this intellectual property – and help the RETS group improve on it – to accomplish the common goal of providing better tools and lower costs to the brokerage community. These standard schemas should easily fit into their current processes, utilizing simple XSLT transformations to convert the standard XML schema into their current proprietary schemas. This small addition to the workflow of a few sites would amount to a tremendous savings on the input side of thousands of participants – the brokers and the MLS’s – and encourage increased participation.

Only when we have consistent standards do we see an increase in the creation of tools, increases in efficiency, and lowering of costs. The participation of these leading web sites in the mission of the Real Estate Standards Organization will go a long way toward ensuring adoption of these standards.