I built every piece of the bar in my tarp covered back yard. The bar took 3 weeks to build, but I’m a bit obsessive, so over the 3 weeks, I estimate I put in just under 100 hours (about 4 hours 5 days a week and 10 hours during weekends). A good portion of the time was spent thinking through the modifications I was making to ensure I wouldnt hose myslef on some measurement later in the building progress, like result in a keg box that was too small because I forgot that I needed to unclude the insulation and metal thickness. If you make only minor modifications to the provided plans, I would expect a lot less time necessary.