Convert a 2 Family semi-detached brick house into a 3-family house

Job ID: 33397773

Budget: $30 – $250 USD

Hi
A 2-family house n the Bronx with a finished walk-in basement, fully above ground. it has one bedroom, a bathroom, and a kitchen area without any fixtures, (gas, plumbing still available etc). I need to know what has to be done to meet the code requirement to convert it into a 3-family in NYC. An estimate for the necessary plumbing, construction and electrical. (Possible 220V electric stove)

Thank You