Who we are

Connecting, creating, inspiring

GBS (Glavbolgarstroy) is the largest construction group in Bulgaria and one of the biggest in South-eastern Europe. We specialise in infrastructure, residential, commercial and industrial construction projects, and we pioneer sustainability in everything we do.

What we do

Bringing construction and renovation plans to life

Our services cover the entire life cycle of construction projects, from conceptualisation, planning, estimation and design, to construction, management, operation and maintenance.

Ventilation

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Restorations

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TOGETHER WE BUILDING THE FUTURE

Group of companies

Glavbolgarstroy is one of the largest construction groups in Bulgaria and Southeastern Europe. With over 55 years of experience, the company specializes in the development of energy, transport, and water infrastructure, as well as residential, commercial, and industrial construction.

The companies within the Glavbolgarstroy Group bring extensive expertise and specialization across all key areas of the construction sector. Their activities cover the full spectrum of project implementation—from concept development to construction, operation, and maintenance.

News and Insights

What we’ve been up to and what we think

GBS at the Green Transition Forum: A coordinated regional approach will facilitate the accelerated implementation of strategic energy projects
News 02 Jun 2026

GBS at the Green Transition Forum: A coordinated regional approach will facilitate the accelerated implementation of strategic energy projects

Connectivity is at the core of ensuring energy security and providing affordable energy for the countries of Southeast Europe. This topic was the focus of a special panel dedicated to the energy sector in Sout...
Glavbolgarstroy partners with Financial Times at the Energy forum in Athens
News 15 May 2026

Glavbolgarstroy partners with Financial Times at the Energy forum in Athens

During the international forum Energy Transition Summit: East Med & Southeast Europe, organized in Athens by the leading global financial and business platform Financial Times, Federico Lazzari, Head of the...
Glavbolgarstroy at the Delphi Economic forum: Energy security requires swift solutions and an adaptive approach
News 24 Apr 2026

Glavbolgarstroy at the Delphi Economic forum: Energy security requires swift solutions and an adaptive approach

The discussion focused on cooperation as a key factor for energy security and infrastructure development. Energy security has become a central element of global stability in the context of increased geopolitic...