No. You may not register to vote or vote if you are serving a sentence in jail or prison for a felony conviction. If you are transitioning from a DOC facility and are living in a halfway house you CANNOT vote, even if you have completed the residential phase and are on non-residential status. You cannot vote until you are actually on parole.
If you were sentenced by the court to serve your sentence in a halfway house (i.e. diversion client) then you can vote whether you are living in the halfway house or on non-residential status.