George said the hard work had been worth it but noted there was still a lot to do.
"The big obstacle has been getting it to open but now it's selling the stuff."
Fortunately he already has about half a dozen bars in Wellington selling his craft beer as well as a few bars in Kapiti.
The brewery creates pale ale, pilsner, stout and monthly seasonal releases.
"I'm really pleased with where we have got to but there is still a lot of work to build the brand and turn the brewery into a business."
It was a "surreal moment" creating the first batch of beer at the premises especially as there had been so many components involved leading up to it.
"It's a good feeling and we're happy with the beer that is coming out of the brewery."
George has done a lot of the brewery build himself but has had help from a number of people too.
"I have called in a lot of favours, especially being a builder, and also had a lot of advice.
"There has been a lot of help and my family have been a big part of it."
Being so hands-on has also given George an intimate knowledge of the brewery's ins and outs especially when it comes to troubleshooting.
The brewery is working through the process of getting an off-licence onsite - people can keep up to date with progress via the Duncan's Brewing Co Facebook page.