About 40 minutes including the 10 minute walk.

For comparision:

on foot 50-60 minutes
by bus/train 40 minutes
on bike 20 minutes
by car 20 minutes

I reckon that hh to the office will always take between 20 and 40 minutes. It was the first time (in 20 occasions) that I left my village by hh, with a driver not going where I thought. If he went to the right motorway spot, I would have done it in 25 minutes.