This thesis is dedicated assessment systems impact of building on the environment, especially system BREEAM. The following section present the issues of certification, sustainable construction, and factors which decide, that the Investor make a decision on certification object. This thesis contain the main information about two certification system BREEAM. In addition, this thesis shows the statistics certification in Poland, the certification process, costs, and criteria which building should achieve to get the certificate. Final effects is present an assessment of low-energy building in the BREEAM New Construction system, version: 2013, discussion of the results, and present relevant issues of BREEAM and sustainable construction.