Just curious if anyone has done this type of conversion? And how much did it cost you and how long of a process? Particularly interested in 3-4 story single family to 3-4 family conversion.

* Cost
* Time
* Major Milestones/Hurdles that needed to be achieved

Sorry, I put this in the wrong category....

Please respond to same question in renovation category:

http://streeteasy.com/nyc/talk/discussion/32861-splitting-single-family-townhouse-to-mutli-family