Group's Companies

  • PETRA
  • ARETE
  • KONTEC SOLERGY
  • TRIKAT

Investa Group

One of the largest groups in the construction sector. Infrastructure projects, studies and construction, green growth.

Testimonials

The old building known as Building "Varangi" was perfectly restored and gives a nice picture of the Vasilissis Sophias Str.
Kathimerini Newspaper
Article on Goulandri building

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Group

PETRA

The architectural firm PETRA was established in Athens in 1978 and has specialized in designing modern buildings, renovation and reuse of historic buildings, etc.

ARETE

In 1980, a technical group of friends founded a technical office with the main object of study - building construction and mechanical engineering.

KONTEC SOLERGY

The company was founded in May 2007 in Thessaloniki.

TRIKAT

The company was founded by brothers Athanasios & Stergios Gantzoula in 2000 as a group company of Gantzoula companies whose main activity is the Real Estate.