250 Richmond Street West

CHUM and CHUM-FM's previous headquarters were located at 1331 Yonge Street until CTV announced it would sell the building to developer Aspen Ridge Homes for $21.5 million in July 2008.

[3][4][5] The building also briefly served as home to rhythmic and classic hip hop station Flow 93.5 from February 2011 until after their sale to Newcap Radio on March 31, 2014.

When Bell Canada acquired Astral Media they were required by the Competition Bureau to divest a number of certain assets.

As a media company in Canada cannot own more than two FM and two AM English radio stations in any one market, Flow 93.5 was subsequently sold while NewsTalk 1010 and Virgin 99.9 were kept through the purchase of Astral.

Now, CHUM AM is primarily based at the 9 Channel Nine Court complex in the Agincourt neighbourhood of Scarborough, so its radio programs can be simulcast on TSN's television network.