This is a problem I've noticed in my area. Granted, I don't live in the hottest of real estate markets. But there are more than a few larger custom homes in the area that sit on the market for months or even years. My neck of the woods is pretty rural, so building trends vary greatly. No such thing as neighborhood associations here. This makes for a lot of 'dream' home builds. There's a house down the street from me with a gun range in the basement. It finally sold after being on the market for a year or so (I'm told it's been on the market several times in the past). Extent family eventually bought it. A newer custom (like within last 10-20 years) build on the street recently sold after about 6 months on the market. I'm surprised it went as fast as it did. My street is somewhat desirable for the area (mix of blue collar and middle class), which helps. But the house, as nice as it is, is just huge and impractical for the average size family looking to buy a move-in.