Converting from SFH to Duplex

[James Edwards]

Has anyone converted a SFH into a duplex? Looking for general tips and tricks.

4br 2 bath home. Much of the work has been done I believe, since the house was added on to previously and 1/2 of the house is served by a sub panel. I'm thinking it would be possible to simply run this second sub panel to a new meter/base. 

Adding a second kitchen, may be rather costly, but should be close enough to existing lines.

I was curious though. Given one of the  bathrooms is accessed through a master, would that likely greatly decrease the rentability of it as a duplex? May be possible 

ROI as a duplex is fantastic compared to SFH, but I'd rather have a SFH that rents compared to a duplex that doesn't. Same goes for shared dining/kitchen, or living room dining rooms. Would a guy need to really watch that?

Thanks