Good question, @justinjayjohnson. Right now, the best I can offer is this Zillow script. I can imagine that it may look daunting but I’d be happy to help clarify the process and instructions if you’re up for giving it a try.
To your point about making it easy, I’d love to include the script as part of the Tiller Money Labs add-on. The script is relatively simple and easy to embed in our add-on. The issue is that I don’t have a good solution yet on how to help users easily get a property ID (zpid) or a Zillow Web Services ID (zwsid).
I’ll continue to think on this, but your best bet is the script for now.