Philadelphia, PA Zoning change Duplex to Tri-plex

[Matt Daley]

Hello, I just purchased a Duplex in West Philadelphia that was being used a non-legal triplex (there was a 1 bedroom unit in the basement). After going through L & I issues it was converted back to a Duplex before the sale. I am looking to try to change the zoning from Multi-Family duplex to Apt 2-4 units. I believe it should be possible. It is a corner property and many similar properties in the neighborhood are set up with a business on the bottom floor. I am looking for any advice on where to take my 1st step. Do I have to contact an attorney or can I take this on myself? I have been searching on the cities zoning website just not exactly sure where I should start. Thanks in advance!