I would say that by about 1880 they'd have had married quarters. A Senior NCO wouldn't have lived in a barrack room anyway. In addition there was a major reform of the army in the 1870s and 1880s. They were called the Cardwell reforms. The report I mentioned earlier was probably part of that process. as far as I know every barracks in Ireland was inspected so a report exists for Naas someplace. The married quarters in Clonmel were built in 1879 for instance (the building still stands and is now local authority apartments). But you would need to talk to a local historian in Naas with an interest in military history who might be able to tell you when the buildings in the barracks were erected. The Army magazine (An Cosantoir) ran a series of articles on military posts back in the 60s. If you wrote to Military Archives, Cathal Brugha Barracks, Dublin they might be able to send you a photocopy of the article on Naas.
I wouldn't say Naas was on the Curragh though.