Since when does being married to another service member place you in the barracks?

SSG Keith please refer to Army Regulation 210–50 for further guidance.

Army Regulation (AR) 210-50, Chapter 3 outlines policy regarding Certificates of Nonavailability (CNAs) for single enlisted Soldiers (E1-E5) entitled to Basic Allowance for Housing (BAH) at the w/o dependents rate (paragraphs 3-36 and 3-37). Army policy entitles Staff Sergeants (SSG) and above to receive BAH and reside off-post in the United States.

Single Soldiers SSG and above are to reside off-post and receive BAH at the 'without dependent' rate. Geographical bachelors, all ranks, who are entitled to BAH 'with dependents' rate, and are voluntarily separated from their family members, are not authorized assignment to permanent party Unaccompanied Personnel Housing barracks. Soldier married to Soldier with no dependents and who are assigned to the same or adjacent installations are both entitled to BAH 'without dependents.' No CNA is needed; finance will process entitlement. *Each Soldier is entitled to BAH in their own right. Soldier married to Soldier, when one is assigned to a different installation, are housed as single soldiers. This does not qualify as a geographical bachelor. *Soldier who is divorced and has partial custody is housed as a single Soldier; CNA will not be issued for the purpose of children visits. Finance and/or Military Personnel decide dependency for BAH with dependents.
Housing does not determine entitlement to BAH for divorced Soldier. Change in marital status must be reported to Finance to prevent BAH overpayments

Well if you are both joint service members and on the same base you can live in the barracks if your going through domestic issues and need to be separated. Yeah as an MP I had to deal with a lot of joint service domestics where one service member ended up having to stay in the barracks.<br>

When I was married to another service member and she was stationed in Hawaii and I Fort Campbell I was considered and "geographical bachelor" and did not receive BAH and was charged meal deduction upon inprocessing Fort Campbell. So honestly it varies post from post. Check with the garrison commanders policies and go from there.