The main specialty of Dzintars Rench is earthworks and infrastructure construction. Basically, from A to Z he can build anything in any weather. He has the people, the machinery, the designers and the work force. There is a task, there is a result.

Dzintars can provide projects with topographical surveying, geotechnical investigations, development of the project in the minimum composition, sketch projects, construction planning and obtaining a building permit, development of the master plan of the territory and development of the full construction project, road plans, all types of sewers, land reclamation, cable routes and will lead the project to the end.

His own personally managed major projects:

• Reconstruction of Lielvārde base, deforestation in an area of 100 ha, runway reconstruction, dismantling and assembly of concrete slabs, construction of a 12 km long perimeter patrol road;
• Soil replacement, sand supply, terrain creation and landscape design of the golf club area;
• Hydromelioration construction of Meldziru marsh 150ha – 50km;
• Vilnius airport runway reconstruction (earthworks);
• Creation of a temporary dam between the leachate basins, remediation of 300'000 m2 of contaminated soil, pouring of concrete, laying of HDPE film, construction of sewerage on the SBR, installation of a pressure pipe to the leachate basin;
• Renovation works of the cogeneration station in Bauska after 5 years of inactivity, 4.2MW;
• Creation of infrastructure in the Latgale region for a business park, 5ha.