Press of Germantown Independent-Gazette, 1899
Right: Geo. W. & Walter S. Bromley, Civil Engineers, “Atlas of the City of Philadelphia”, Volume 7, 22nd Ward, Plate 11, 1899, G.W. Bromley and Co.
The location of the house is the same, but the name of the owner is different on the map. Although they have the same last name, the one on the map of 1889 is William N. Allen and the one on the map of 1899 is N. Penrose Allen. According to the Directory, they have the same company. They might have family relations.
Boyd's Co-partnership and Residence Business Directory of Philadelphia City, 1900
Google Maps and Street View