Monitoring in general and law enforcement monitoring in particular are becoming new technologies for assessing the quality of public administration. Government agencies seek to create and use them, however, the state of knowledge in this field in Russia doesn’t meet the demands of times. The authors describe a project of a new law enforcement monitoring technique developed at the Saint Petersburg State University Assessments Centre, adding to it their own-sociological-view on the problem. The paper raises methodological questions that must be solved for improving the law enforcement monitoring technique. To this end, a critical analysis of typical definitions is carried out and the sociological approach is formulated. It is proposed to expand the list of subjects of monitoring as well as to include new techniques for its implementation using the “methodological matrix” framework. The paper analyses the regulatory impact assessment as an area of law enforcement monitoring and identifies their common and special parameters.