Business Units

Transremontstroy EAD  is one of the oldest companies in Sofia. It has 93-year experience in underground and aboveground railway construction and repairs, as well as in the production, installation and repair of tramline facilities and spare parts for Sofia tramway infrastructure.

Since 2007, Transremontstroy has been part of GEOTECHMIN GROUP. The integration of new equipment and technologies helped to increase the company’s competitiveness and quality of services. The company won reputation as one of the leaders in the construction and repair of road and tram railways, and thanks to the investments and new expertise gained in GEOTECHMIN GROUP, Transremontstroy has expanded its activity scope in other areas - production and installation of metal structures, machining - welding, lathing, fitting and milling operations, production of reinforcement billets, repairing and rebuilding excavator buckets and dump truck trays of various brands, construction, etc.


The company has its own mechanical workshop equipped with both multipurpose and special-purpose machines, such as plasma/oxy-fuel cutting machine, horizontal and carousel lathes, sheet metal bending machines, cutters, grinders, etc.

Thanks to the modern equipment, the company manufactures and installs a wide range of standard and custom-made metal workpieces, metal structures and related components, including components and spare parts for mining equipment, as well as all types of steel lattice poles and pipe poles according to client’s request and drawing. The company manufactures and recycles switches and switch parts. It also produces and installs all types of rail structures and railroad service equipment.

The company owns a special sleeper-tamping machine for 1009 mm track gauge, which is widely used in tramway track construction and maintenance. The company produces all types of reinforcement billets. Furthermore, it manufactures reinforcement cages for diaphragm walls and piles, as well as standard and custom-made metal workpieces.

Other activities carried out by Transremontstroy include: renting of formwork components; collection, storage, recycling and handing over ferrous and nonferrous metals for further treatment; heavy construction equipment services; transport and load handling services for heavy oversized freights.


Transremontstroy has implemented an Integrated Management System in compliance with ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018. The company is registered in the Central Register of Professional Builders at the Bulgarian Construction Chamber for executing high-rise structures and adjoining infrastructure, structures from transport infrastructure and public works infrastructure as specified in groups 1, 2, 4 and 5.

  • A cargo transport licence on the territory of Bulgaria
  • European Certificate of Conformity stating compliance with the standards BDS EN 1090-1:2009 + A1:2012; BDS EN 1090-1:2009 + A1:2012/NA2013 and in relation to the standard BDS EN 1090-2:2008 + A1:2011 Execution of Steel Structures and Aluminium Structures,  European Certificate of Conformity stating compliance with the standard BS EN 40-5:2002 (in accordance with Regulation (EU) No 305/2011 of the European Parliament and of the Council of 9 March 2011 relating to the construction product “Steel Lighting Columns”).
  • Certificate of Conformity of the Factory Production Control for execution of steel structures and aluminium structures
  • Trading licence for ferrous and nonferrous scrap metals No.12-DO-1242 dated 14 March 2013


  • Bulgarian Construction Chamber

7 Dzherman Str., Iliyantsi District, Sofia 1271

Yuliana Merdzhanova
Executive Director
tel.: +359 2 813 02 23
This email address is being protected from spambots. You need JavaScript enabled to view it.



Bulgarian Construction Chamber

Business Units


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