The Brooklyn duplex of a hip ax-maker is on the market for $2 million.

Peter Buchanan-Smith, who grew up on his family farm in Ontario, was once a graphic designer and a design director for high-profile names like Isaac Mizrahi.

When he wanted to chop some wood with his best friend from childhood, he couldn’t find a proper ax, so he sourced one in Maine and painted it by hand.

That experience became the basis for Best Made Co., the artisanal tool and adventure apparel company he founded in 2009. His axes have since become works of art, meant to be on display. that are also functional. Among their collectors are billionaire Leonard Lauder.

Buchanan-Smith’s home, located at 100 Summit St. in Carroll Gardens, is on the third and fourth floors of a charming brick townhouse. The 2,500-square-foot unit features with three bedrooms, three bathrooms, oak floors, high ceilings — and four outdoor spaces, including a roof deck. There’s also a library that holds 1,000 books and includes a screening room. As an added bonus, the property comes with a modest $324 monthly maintenance fee.

The listing broker is Terry Naini, of Brown Harris Stevens.