City House is a historic preservation and adaptive reuse project located in the heart of Mt. Vernon. The original building was designed by Joseph Evans Sperry, a well-known Baltimore architect, as the city residence for William Marburg, an heir to a tobacco fortune. SM+P’s scope included retaining and preserving the ornate character of the original 16,000 sf mansion, while converting the building into a functional, modern, and desirable multi-tenant office building. The construction phasing, budget, and historic tax-credit stipulations, added a significant amount of complexity to the project.