York Square is an urban infill project in the Old City neighborhood of Philadelphia, providing 60 live/work loft units on a former automobile service station and warehouse property. Redevelopment of this brownfield site focused on matching the height, scale, and materials of the neighboring industrial buildings. The new building has an entrance courtyard and views of the Benjamin Franklin Bridge and St. Augustine and Old St. George churches. Five of the units surrounding the courtyard are permitted for residential or commercial use. York Square will be an asset to the community and a sound model for infill development in the state's once industrial cities and towns.