Plenty of hundred and more year old wooden houses where I live in Norway. It can be hard to tell though until you see someone take off the external planks to renew them and you seethe solid baulks of timber underneath.

My wooden house was built in 1953 with a concrete watertight cellar serving as the foundation. The wood doesn't start until more than half a metre above ground. I see no reason why it shouldn't last another fifty years or more.