There is no proofs to back it up. The potential grand prize winner is chosen by a sponsor in a random drawing from among all eligible entries received during the entire sweepstakes period.
For specific information on how the grand prize winners will be determined, refer to HGTV Dream Home Rules.
Kathy O’Dell of Huntsville, Alabama was chosen from more than 94 million entries for the HGTV Dream Home Giveaway® 2015. She is the lucky winner of a new Cape Cod-style getaway located on Martha’s Vineyard, a 2015 GMC® Acadia Denali and a $250,000 cash prize provided by national mortgage lender Quicken Loans. A grand-prize package valued at over $2 million.
Go to their FAQ section to get handy answers to questions about the HGTV Dream Home, the giveaway and public tours.
Of interest, find out The 50 Best Reality TV Shows of All Time, according to Complex.com