Adrian Grenier could be a Chelsea boy

Adrian Grenier — apparently part of the overpriced Brooklyn backlash — left the confines of the tragically hip borough to check out apartments in Manhattan. But the 38-year-old “Entourage” star didn’t bring his on-camera crew. Instead, he brought his mom, Brown Harris Stevens broker Karesse Grenier, and a stunning mystery gal pal.

The eco-activist attended an open house at 340 W. 19th St. — a $949,000 three-bedroom, one-bathroom co-op — in a sixth-floor walk-up. Grenier stayed silent and left the talking to his mom, who didn’t appear impressed. However, the unit is fully renovated and comes with a chef’s kitchen and lots of natural light.

CORE listing brokers Stephen Gallagher and Natalie Rakowski declined to comment.