Thessaloniki is Greece's second city, the economic centre of Northern Greece and a natural crossroads between the Aegean and the Balkans. Its port handles a large share of the region's trade, its universities attract students from across Greece and abroad, and its businesses are closely linked with neighbouring countries. When a case arises here, you need a private investigator in Thessaloniki who understands both the city and its cross-border connections.
The office of Petros Drolias, licensed private investigator since the early 1990s, has handled more than 1,500 cases in 14 countries. Our only office is in Athens, and we cover Thessaloniki and Northern Greece through travel and a network of trusted local collaborators. Consultations can be held by phone or video call, so you do not need to travel.
The kinds of cases that arise in Thessaloniki
The city's profile shapes the cases we see.
Cross-border business. Many Thessaloniki companies trade with partners in neighbouring Balkan countries, and many foreign companies use the city as a regional base. Due diligence on partners, distributors and suppliers, as well as disputes when deals go wrong, often have an international dimension. Our corporate investigations service covers this work.
Trade, logistics and the port. The port and the logistics zones around the city bring cargo discrepancies, theft from warehouses, fraud by intermediaries and counterfeit goods passing through supply chains.
Students and young people. With a large student population, families, including families living abroad, sometimes contact us when a son or daughter stops communicating, gets into difficulties or falls in with the wrong company. See our teen concerns service for minors.
Family and inheritance matters. Northern Greece has a long history of emigration, and many estates involve heirs living in other countries. We trace heirs, locate property and document facts for lawyers in Thessaloniki and abroad.
Litigation support. Lawyers handling cases before the courts of Thessaloniki instruct us to gather evidence, trace witnesses and debtors and verify backgrounds.
How we cover Thessaloniki and Northern Greece
Each case starts with a consultation by phone or video call, or in person in Athens if that is more convenient for you. We agree a plan and a written cost estimate before any work begins. Field work is carried out by the office, travelling to Thessaloniki when needed, and by experienced local collaborators who know the city and the region.
We also cover the surrounding areas: the suburbs from Kalamaria and Pylaia to Evosmos and Sindos, the resort areas of Chalkidiki, and the wider region of Central and Eastern Macedonia and Thrace. Border areas matter in many cases, and our network extends into neighbouring countries.
Why use an investigator from Athens
Clients sometimes ask why they should instruct an Athens office for a case in Thessaloniki. The answer is experience and independence. More than 30 years of cases across Greece and abroad mean we have seen most situations before. And in a city where business and social circles overlap, an investigator from outside the local networks can sometimes ask questions more freely, while local collaborators provide the on-the-ground knowledge.
For international clients, there is a practical benefit too: one point of contact, working in English, who can coordinate enquiries in Thessaloniki, Athens and abroad within the same case.
Lawful, discreet work
Wherever we work, the rules are the same. Article 19 of the Greek Constitution protects the privacy of communications, and Article 19(3) makes illegally obtained evidence inadmissible. Article 370A of the Penal Code criminalises illegal interception and recording, and the GDPR and Law 4624/2019 govern personal data. We do not intercept communications, access other people's devices or accounts, or obtain bank, telecom or police data. Our findings are gathered through observation in public places, public registries, open sources and lawful field enquiries, so that they can be relied on.
Discretion is just as important. Thessaloniki is a large city, but business and social circles can be close. We plan field work so that it attracts no attention and keeps your name out of the picture.
What you receive
You receive a structured written report with findings, a chronology and, where relevant, photographs or video taken in public places, in English or Greek. For lawyers and companies, the report is organised for use in proceedings, negotiations or internal decisions.
Get in touch
The first consultation is free, confidential and without obligation. Call us 24/7 on 210 321 2200 or 699 321 2200 (+30 from abroad), or write through our contact page. You can also read more about our base in Athens.