- When is it too early to start decorating? While 9.1% say it’s never too early, the largest percentage (36.6%) say before Halloween is too soon, nearly a quarter (23.8%) say before Thanksgiving, about the same amount (23.3%) think it’s before December 1st and 7.2% actually think it’s too early to decorate before Christmas Eve. As for when most people start decorating themselves, 24.4% start between Thanksgiving and November 30th, followed by 22.7% who begin a few weeks before the holiday, while 6.4% don’t start until December 24th. When it comes to taking down those holiday decorations, 22.7% do it the day after the holiday, 35.5% before New Year’s, 29.9% do it in January and 7.5% wait until February.