WORCESTER, Mass. - Tenants in the Denholm building in downtown Worcester are making arrangements for a move out of the building, according to multiple sources.

Several of the tenants are considering a move to the former Unum building on Chestnut Street, less than a half mile away from the Denholm building on Main Street, sources say.

The former Unum and Paul Revere Life Insurance building is owned by the Krock family, who purchased the building in 2018 for $1.9 million. The 1922 six-story building is roughly 300,000 square feet and has two parking lots.

Officials say the Worcester Redevelopment Authority is considering the purchase of the Denholm building. The WRA met on Aug. 13 in executive session to discuss the potential acquisition.

"The Denholm building was identified as a targeted property for rehabilitation or redevelopment in the WRA’s Downtown Urban Revitalization Plan,” Worcester Chief Development Officer Peter Dunn said in a statement released earlier this week. “As such, the WRA has been engaging with the Denholm Condominium Trust to understand their goals and to discuss opportunities to work together regarding the future of the property.”

The Denholm building extends a downtown block from 484 to 500 Main St. and is across from City Hall. It’s home to local nonprofits, such as United Way of Central Massachusetts and Worcester Community Action Council, as well as regional nonprofits, such as Big Brother Big Sister and Easterseals Massachusetts.

Maurice Boisvert, interim CEO of Big Brother Big Sister Central Mass & Metrowest, said the organization is “in the process of figuring out our move.”

Boisvert did not provide details on the WRA’s plans for the Denholm building, but said, “(The condo owners in the Denholm building) are trying to keep things positive between city and organizations.”

Boisvert wouldn’t comment on whether Big Brother Big Sister is among the organizations considering a move to Chestnut Street.

The Denholm building was built in 1885 and the six-story, 200,000 square foot building is said to be home to the first escalators in the city, as well as the first building with electricity and air conditioning.