Duhamel said on the "Fly on the Wall" podcast that arriving at his off-grid Minnesota retreat cuts his heart rate by about 25% and shifts his priorities away from Hollywood.
The 53-year-old actor said the property gives him purpose because he is always building or fixing something, calling the remote cabin "absolute freedom."
The retreat grew from a 12-acre purchase nearly 17 years ago into roughly 50 acres; he said he paid $189,000 for one 26-acre parcel and spent more than 15 years shaping the site.
The cabins started with no water or bathroom and now run off-grid with wells, solar power and propane, while Duhamel and his family primarily live in Fargo for a slower pace than Los Angeles.
Duhamel has increasingly framed the property as both sanctuary and self-reliance project, saying in March he was 72% ready for a "zombie apocalypse" at the cabin.