In connection with recodification tendencies ,many changes were made in the field of criminal law as of January 1,2012. One of the most important changes in this field was passing a new alternative punishment of house arrest. The theoretical part of the thesis mentions a purpose of the punishment and describes its role , defines current legislation of house arrest , conditions for the punishment, way of checking it . It also includes a brief look at house arrest abroad and describes activities of Probation and Mediation Service when implementing this punishment. The author describes electronic monitoring in the last chapter of theoretical part . Practical part of the thesis introduces a comprehensive overview of house arrest use in South Bohemian judicial county. The thesis was supported by available specialized literature, articles, judicature and internal methodology of Probation and Mediation Service.