There are numerous cities where builders are holding new home auctions and not on the courthouse steps! If you want to find some good ones, just do a simple search on the Internet.
You can also check with local builders, or call some real estate agents in your area. Builders will sometimes use incentives to attract real estate agents to bring potential buyers. Typically builders will give real estate agents a percentage of the sale price when they bring the buyers closing. You can also search online to get more info here about real estate auctions.
Some websites specify homes that will happen for auction including the status of the sale, the sale date is scheduled, the time of sale, the number of cases, the lien holder, attorney for the lien holder, phone number for an attorney for the lienholder, the name of the owner of the house and other information.
Although you can probably get a better deal through a foreclosure auctioned on the courthouse steps, some states allow the homeowner redemption rights for a period after the auction.
Just because you are the winning bidder, does not mean you can take direct ownership of the house. You may still have to wait for the redemption period to end before you can take ownership.
If the homeowner can redeem the home, then you've wasted time, effort, and maybe even money in the process.