The complex consists of a 16-story office tower, 233,000 square feet (21,600 m2) of retail shops on 3 levels 185,000-square-foot (17,200 m2), and a parking structure.
Midland Oak Realty purchased the building from MBL Life Assurance for $15 million in 1997. The complex was later owned by a Dallas-based capital management company, which bought the building for $25.7 million in 2004, along with 25 tenants-in-common. A planned sale fell through in 2008. In March 2011, In-Rel Properties based in Lake Worth, Florida purchased the building for $15.25 million and invested over $1 million in renovations.
The complex was built in 1973 by C.W. Cameron, founder of American Fidelity. For the next twenty years it was a landmark due to four neon pigs, one on each face, belonging to Sooner Federal Savings and Loan. It was also formerly home to the flagship store of the Orbach's chain of local clothing stores (which closed in 1990). Although not currently anchored by a major retailer, 50 Penn Place has upscale shops and restaurants, a brewpub, independent bookstore, the 50 Penn Place Art Gallery, and various office tenants including LexisNexis. In recent years, the retail portion of the complex has lost the majority of its tenants to other shopping venues, such as nearby Penn Square Mall, and is no longer seen by locals as a shopping destination. However, several upscale tenants still remain, and former retail space is being leased to other tenants, such as ITT Technical Institute. In March 2011, In-Rel Properties purchased the building for $15.25 million and invested over $1 million in renovations.