The carhouse was subsequently transformed into a community centre called the Wychwood Barns.

The new line temporarily operated out of the Station Street supply yard as the St. Clair Carhouse would not be available for four more months.

Barn doors were added on the west side for streetcars to enter via a westbound track beside Benson Avenue.

The previous evening (September 23), a ceremony was held at the corner of Wychwood and St. Clair Avenues to honour the occasion.

The PCCs replaced Class BB streetcars that the TTC had inherited from the Toronto Railway Company.

PCC streetcars were also introduced into service on Bathurst and Dupont in 1942, on Fort in 1948, on Bay in 1950, and on Oakwood and Rogers in 1952, with all these routes being based at the St. Clair Carhouse.

[3]: 129  On February 28, 1963, opening day for the University extension of the Yonge subway, the Dupont streetcar route was replaced by buses on Bay Street.

Peter Witt cars (15 on the Bathurst route and 8 on Fort) made their last large-scale runs February 28.

Because of a shortage of PCC streetcars at St. Clair Carhouse, a couple of Witts ran on the Bathurst route on March 6 and 7.

Operating on the Bathurst route, six Witts each made one last run on April 24 to service crowds exiting a baseball game at Exhibition Place; however, it is unclear from which carhouse these six originated.

Some overhead trolley bus wire was installed to keep the buses' on-board batteries charged.

[6] On April 15, 1978, six of the nine exterior yard tracks were severed just before they crossed into Wychwood Avenue.

[6] The facility was leased to the Urban Transportation Development Corporation to test and modify the 196 CLRVs it was building for the TTC.

[2]: 53–57 In the late 1980s, the yard became a streetcar graveyard for retired, and often partly stripped, PCCs awaiting disposal.