Liberty Property Trust plans to raze the former Support Center for Child Advocates building at 19th and Cherry Streets, part of an assemblage of properties the developer has been acquiring in collaboration with Comcast Corp.

Liberty hopes to begin demolition next month on the two-story building at 120 N. 19th St., John Gattuso, regional director for the Malvern-based developer, said in an interview Tuesday.

The company has no immediate plans to develop the property, he said.

Liberty has acquired much of the block bounded by Cherry and Arch Streets, between 19th and 20th Streets, in arrangement with Comcast. Some have speculated that a third Center City office tower for the entertainment and technology company could be built at the site.

Liberty is nearing completion of the Comcast Techology Center, the company's second Philadelphia skyscraper, to the southeast of those properties.