Snickers., before my son relapsed two months ago, he had been living clean & sober & working at an Oxford House in NJ for 9+ months. It's a good situation of course not a perfect one. A lot of it depends on the house manager and the other clients living there. If you want to find trouble and screw up, you can -- people get kicked out all the time. If you want to work your program and do well, you can do that to. AA or NA meetings are mandatory and they do P Test. Best wishes to your son.
Unfortunately they don't allow members who are on methadone, which my son is on at this time. The politics involved with Methadone and suboxon are very strange -- but that's another story.
Prayers to all you.