Features of carrying out of engineering-geological researches for building of linear constructions during updating of normative documents: Construction Norms and Regulations 11-02-96. «Engineering researches for construction. Basic provisions» and Sanitary Rules 11-105-97 «Engineering-geological researches for construction. Part 1» are considered. The analysis and comparison of earlier acting document (Sanitary Rules 11-105-97) and actualized one (Sanitary Rules 47.13330.2012 «Engineering researches for construction. Basic provisions») is carried out., the main differences influencing the carrying out of engineering-geological researches for linear constructions are allocated. Comments of the expert organizations on the example of engineering-geological researches under construction of the cable communication line are considered.