I start around the week or second week after Halloween putting mine up. The inside of my house is where I do the most, I have people wanting to like take a tour of it all lol. Takes me a couple weeks to do it all, maybe a bit more. I leave mine up until the end of January/beginning of February because its not just Xmasy, its wintery and I love it so much and it takes so much time to do it all, I like to enjoy it for as long as I can. I might take some of the really Xmasy stuff down earlier and just keep the more wintery stuff up longer, but we'll see. As Valentines day approaches, seems like a good time.