The Leaf House officially finished construction in Aug 2016 and is still standing. The Leaf House is estimated to hold around 6000 bugs native to the Uk. People visit The Leaf House everyday it can also be seen on google maps if you type in Bug House Billingham https://www.google.com/search?q=bug+house+billingham&source=lmns&bih=1272&biw=882&hl=en&sa=X&ved=2ahUKEwi2y47G6bTtAhUkgM4BHRquAyUQ_AUoAHoECAEQAA.
You are allowed to visit The Leaf House (aka The Bug House) anytime no permission needed or payment.