In 1940 the company sold the buildings at the southern end of the property to the Gallowhur corporation, which used them to make insect repellent and suntan lotion.
The rights to the pill formula were also sold off after World War II.
Brandreth's company, under the Allcock name, continued its manufacturing operations in the 1870s complex until 1979.
They were later used by the Filex Corporation, a maker of steel office furniture.

Eventually they became vacant again.
In the 2000s a local developer, Plateau Associates, proposed the Hidden Cove on the Hudson project for the main building area.
A total of 132 new housing units, planned as condominiums of a mix of prices, would be created, 28 of which would be in the main building.
Plateau hoped to obtain Leadership in Energy and Environmental Design (LEED) certification for the completed units.

Plans apparently stalled after Plateau submitted its draft environmental impact statement (EIS) in 2008.
At that time it also secured a demolition permit, but did not use it as other options were explored.
In 2011 it prepared to submit a final EIS, with Hidden Cove now, in the wake of the Great Recession, changed to luxury rental units.

However, in 2007, the Federal Emergency Management Agency (FEMA) had issued updated flood plain maps for the Hudson River.
They showed that the property would be under two feet (61 cm) of water in a hundred-year storm.
By late 2012 that probability had been demonstrated by flooding after three tropical storms—Irene, Lee and Sandy—had struck the region.
The last of those storms had, in fact, flooded the factory area up to four feet (120 cm).
In the wake of Sandy, FEMA issued new maps.

Before Sandy, the already-deteriorated building's ground floor would have to be raised at least two feet, making it impossible to put any residential units on it.
Afterwards, that would likely have been increased to six feet (180 cm) "We were thinking about adaptive reuse of the mill," said Peter Stolatis of Plateau. "
The new floodplain plan puts an end to that."
Plans to demolish the building were accelerated by village officials' insistence that the project be limited to just one building rather than several, he added.

Shortly afterward, the village's Historic Preservation Commission gave the building local landmark status.
This meant that the building could not be demolished without its official permission.
But in April 2015 Plateau Associates, the owner, began demolishing the building.
While the company had been issued a demolition permit in 2008, Village manager Christine Papes said it had expired, and Plateau had not cleared its action with the village's Historic Preservation Commission, either.
Plateau's lawyer claimed it had met all the village's requirements and not heard back from the village, so it proceeded with the demolition.
In 1940 the company sold the buildings at the southern end of the property to the Gallowhur corporation, which used them to make insect repellent and suntan lotion. The rights to the pill formula were also sold off after World War II. Brandreth's company, under the Allcock name, continued its manufacturing operations in the 1870s complex until 1979. They were later used by the Filex Corporation, a maker of steel office furniture.
Eventually they became vacant again. In the 2000s a local developer, Plateau Associates, proposed the Hidden Cove on the Hudson project for the main building area. A total of 132 new housing units, planned as condominiums of a mix of prices, would be created, 28 of which would be in the main building. Plateau hoped to obtain Leadership in Energy and Environmental Design (LEED) certification for the completed units.
Plans apparently stalled after Plateau submitted its draft environmental impact statement (EIS) in 2008. At that time it also secured a demolition permit, but did not use it as other options were explored. In 2011 it prepared to submit a final EIS, with Hidden Cove now, in the wake of the Great Recession, changed to luxury rental units.
However, in 2007, the Federal Emergency Management Agency (FEMA) had issued updated flood plain maps for the Hudson River. They showed that the property would be under two feet (61 cm) of water in a hundred-year storm. By late 2012 that probability had been demonstrated by flooding after three tropical storms—Irene, Lee and Sandy—had struck the region. The last of those storms had, in fact, flooded the factory area up to four feet (120 cm). In the wake of Sandy, FEMA issued new maps.
Before Sandy, the already-deteriorated building's ground floor would have to be raised at least two feet, making it impossible to put any residential units on it. Afterwards, that would likely have been increased to six feet (180 cm) "We were thinking about adaptive reuse of the mill," said Peter Stolatis of Plateau. "The new floodplain plan puts an end to that." Plans to demolish the building were accelerated by village officials' insistence that the project be limited to just one building rather than several, he added.
Shortly afterward, the village's Historic Preservation Commission gave the building local landmark status. This meant that the building could not be demolished without its official permission. But in April 2015 Plateau Associates, the owner, began demolishing the building. While the company had been issued a demolition permit in 2008, Village manager Christine Papes said it had expired, and Plateau had not cleared its action with the village's Historic Preservation Commission, either. Plateau's lawyer claimed it had met all the village's requirements and not heard back from the village, so it proceeded with the demolition.
Brandreth Pill Factory