If the Las Vegas seller isn't willing to wait or accept a per diem, there are lot's of other homes on the market in Las Vegas, and Len is right...you may luck out and get it after you've sold your home in NY. Maybe even for less since average price in Las Vegas fell over 7% in January.
Hopefully you've got a financing contingency in your contract. Even so, be prepared to fight to get your earnest money back. That's been an issue lately with the REOs refusing to release the EMD, even when the contract clearly allows for it.
Please come back and let us know how this works out for you.
Realty One Group
It really surprises me that the seller (investment group) even considered accepting your purchase offer on a contingency of your home selling in New York. This is not typical, especially in this market. Most seller situations do not allow such a timeframe or risk for this to take place. I honestly think you are lucky to be in this type of contract to begin with. My best suggestion would be to keep trying to get the close of escrow date extended as you get closer. If the seller chooses not to extend it, then that is their choice. If the seller does choose to cancel the contract at the expected close of escrow date, then If the property is not a popular property and was not obtaining lots of buyer activity, then it may stil be available when your home in NY finally does sell. You may luck out. If not, then you will need to move on and find another home.
I would be happy to help you, but it sounds like you are working with another agent already. They should be the one to offer you sound advice. Good luck with your situation.
Prudential Americana Group
Direct: (702) 203-6688