Insight into expanding existing units into attic Hammond Indiana?

[Jason Dalka]

Any one with experience adding a dormer to a property in Hammond Indiana? I'm looking at an off market deal with a 3bed/1bath on the first floor and a 2bed/1bath and 1bed/1bath on the second floor.  Huge open attic above the second floor, thinking that I could add 2-3 bedrooms upstairs if I can dormer the attic and duplex the second floor units into the attic space. Any insight would be welcome.