Location 5267 Germantown Avenue Philadelphia, PA 19144 215-843-4820 info@philalandmarks.org Hours:  Private visits and tours can be readily scheduled by calling 215-843-4820. Admission:   $5 General admission $4 Students and Seniors $3 per person for groups of ten or more $12 per Family Free for Landmarks Members and children 6 and under. Groups and Rentals:   Groups of 10 or more, including school groups, may tour the house by appointment. The house and garden are available for event or meeting rental. click here for pdf of Grumblethorpe Feasibility study