Chicago SFH to 2 Flat conversion- Advice needed

[Kyle D Birch]

I purchased a single family home which was set up with a related living situation. Eachbunit has its own bath, kitchen, bedrooms, living rooms, hvac systems and both have 2 entrances. The property is in a RS-3 zoning district, allows for 2 residential units. According to my attorney, the property has over 5,000 square feet of land which is the big barrier in conversion. He also states I need to file for a building permit to change the zoning certificate from 1 unit to 2. Does anyone have any experience in this or cannect me with someone who does?