If you’re a regular reader of ATC, you’ll know that I’ve been following the startup Opendoor.com for a few months now. I first wrote about it when it was codenamed Homerun and I just recently wrote about them as preface to a real estate survey I was conducting.

Well, about an hour go it was announced that they’ve just raised $9.95M in venture funding from everyone and their grandmother. Here’s the list of investors (via TechCrunch):

Paypal co-founder Max Levchin, Former YouTube and Facebook CFO Gideon Yu, Eventbrite co-founder Kevin Hartz, Y Combinator’s Sam Altman, Quora CEO Adam D’Angelo, Yammer co-founder David Sacks, Angelist’s Naval Ravikant, Yelp CEO Jeremy Stoppelman, Box CEO Aaron Levie, Initialized Capital’s Harjeet Taggar, Garry Tan and Alexis Ohanian, Former Twitter vice president Elad Gil, Blippy co-founder David King, Flixster co-founder Joe Greenstein, Angel investor Mike Greenfield, Quora co-founder Charlie Cheever, Path’s Dave Morin, Facebook vice president Dan Rose, Trevor Traina, Resolute Ventures’ Mike Hirshland, Caffeinated Capital’s Ray Tonsing, Felicis’ Aydin Senkut, True Ventures’ Om Malik, Thrive Capital’s Josh Kushner, Crunchfund’s Michael Arrington (who disclaimer: founded TechCrunch) and SV Angel.

Not surprisingly, there are quite a few people who see an opportunity in the $20 trillion US residential real estate market – which I think is a good thing. This is a space that–despite its size–hasn’t seen an awful lot of innovation.

There still isn’t a lot of information about the product, but there’s a clear focus on creating liquidity in the marketplace. Despite being located in San Francisco, the company will be launching in 3 markets outside of California – where liquidity isn’t as great for homeowners.

The goal is to transform the typical 90 day selling process into a few clicks online. Homeowners submit their home to the platform and then Opendoor makes an instant offer to buy. Done.

What I wonder then is if it’s going to be an arbitrage play. They buy the homes below market (because they’re offering total liquidity) and then they turn around and sell them at market.

Do you have any guesses as to their business model?