For a genuine first offense with no prior criminal history, the outlook is considerably better than most families fear when they first hear the word domestic charge.
The specific facts of the incident drive everything. The severity of any injuries to the other party is the most significant factor. A domestic charge where no one was seriously hurt is treated very differently than one involving hospitalization or permanent injury. Property damage adds weight to the case. And if a protective or restraining order was in place and was violated, that is an additional charge that changes the calculus considerably.
For a true first offense where the injuries were not severe and no prior order was violated, the most common outcomes involve a suspended sentence, probation, mandatory counseling or anger management, and in some cases a short county jail stay as a condition of the resolution. Long-term incarceration on a first domestic charge without aggravating factors is not the typical outcome in most jurisdictions.
The phrase that matters most in that outcome is suspended sentence. A judge who imposes a suspended sentence is essentially telling your son that the prison time is there waiting, held over his head as both a consequence and a warning. That sword stays hanging as long as he is on probation, and any future violation of probation conditions, including any new domestic incident, brings that time down immediately. That distinction is important for him to understand clearly going forward.
Having an attorney present at every stage of this process is essential. Even on a first offense, how the case is resolved and what conditions get attached to the outcome have long-term implications that are worth handling carefully from the start.