Leadership through excellence

55+ Years of Quality, Commitment and Trust

We lead ground-breaking construction projects across South-eastern Europe

Pioneering Global Sustainability

We stand for a sustainable and circular construction sector for the generations to come

A Reliable Partner to Bring Your Construction Plans to Life

We cover the entire life cycle of wide-ranging construction projects

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.

More about GBS

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.

Energy Infrastructure

Transport Infrastructure

Industrial Buildings

Public Buildings

Commercial and Office Buildings

Residential Construction

Hospitals

Water Infrastructure

Retail and Leisure

Hotels and Resorts

Grain Storages

Pre-stressed concrete structures

Ventilation

Restorations

GBS IN NUMBERS

years of ground-breaking construction projects

2,500

employees across Europe

26M

square metres of completed projects

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

See all news

11 Nov 2025

Glavbolgarstroy presented business position alongside General Electric, Westinghouse, ExxonMobil and other multinational companies at Department of Energy Forum in Athens

Glavbolgarstroy took part in a leadership debate held within the framework of the Partnership for Transatlantic Energy Cooperation (P-TEC), organized by the U.S. Department of Energy and the Washi...

07 Nov 2025

Glavbolgarstroy at the AmCham Bulgaria forum: Long-term planning and infrastructure development will ensure reliable energy, regional stability and competitiveness

How can businesses strike a balance between complying with EU regulations while enhancing their economic value and competitiveness, and what path should companies follow to develop their workforce in a dynamic...

29 Oct 2025

The European Commissioner for Energy, Dan Jørgensen, inspected the progress on the construction of Lot 3 of the Vertical Gas Corridor

Glavbolgarstroy is simultaneously carrying out the activities on Lot 1 and Lot 3 of the strategic infrastructure project The European Commissioner for Energy and Housing, Dan Jørgensen, and Bul...