Holmes, besides having the best name of Zillow Group’s inaugural zip.Code event, took home the people’s choice title for its mobile app that allows consumers to find homes using augmented reality. It was one of the event’s seven winning teams.

The six-person group beat out 33 others who participated in this weekend’s event at the tech giant’s San Francisco offices in the audience choice category, and pocketed $5,000 for the honor.

The Holmes coders were among more than 100 that participated in the all-night event, powered by the hacker staples of pizza and Red Bull and some hacker rarities furnished by a more-than-stocked Zillow Group kitchen: M&Ms, trailmix, energy bars, sparkling water (in multiple flavors), soda, fruit ….

The coders were drawn by the opportunities of exposure, experience, the possibility of cash and access to Zillow Group’s abundant data and the normalization engine of its subsidiary, Retsly, which optimizes MLS and other data for developers.

The data coders had access to:

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The seven zip.Code winners were:

The five judges analyzed each project based on usefulness (30%), innovation (25%), integration (does it use Retsly’s listings API?, 25%) and functionality (does it work?, 25%). The judges were:

Zillow Group’s no stranger to hackathons. It holds them internally for a week each quarter, setting its vast engineering teams free from their day-to-day duties to dream wildly and big. Some of those fantasy efforts turn into products — for example, Trulia’s heat maps.

The real estate behemoth is also spreading its feelers wider and deeper into the real estate startup world, with events like this one and affiliations with real estate accelerators, such as Chicago-based ElmSpring and New York City-based MetaProp NYC.

Retsly, the Vancouver-based company focused on taking disparate MLS and other data and optimizing it for use by coders, has “hackathon” in its blood, too. In late 2013 — before Zillow snapped it up in mid-2014 — the firm held a similar event at the National Association of Realtors’ 2013 annual meeting in conjunction with real estate brokerage and franchise giant Realogy.

Several coders I spoke with before the event were hesitant to participate, despite the opportunity to work with all the data and the possibility of exposure and cash, because they were wary of giving away their ideas and tech that the giant could turn its own talent on to.

That didn’t stop dozens of coders from showing up and dreaming up some cool real estate products.

One takeaway, if no others: the real estate industry should figure out how to open its data to the massive creative energy this event shows is out there — consumers, agents, brokerages, everyone, would win.