The film "Companion" (2025) was primarily filmed in New York State, specifically in the Hudson Valley region. Key filming locations include:

• Putnam County, New York, including Garrison (where the lake house scenes were shot) and Putnam Valley

• Dutchess County, New York, including the village of Fishkill (opening sequence and supermarket scenes) and the city of Beacon, which provided much of the film's background

These locations were chosen for their scenic estates and natural beauty, fitting the film's secluded and tranquil setting despite its dark storyline

. The director Drew Hancock spent about 15 weeks filming in the Hudson Valley area and praised local spots such as a sandwich and coffee shop in Beacon

. In summary, "Companion" was filmed mainly in Dutchess and Putnam counties in New York, with specific scenes shot in Garrison, Fishkill, Beacon, and Putnam Valley