Alexandre Ribeiro – Certified Private Investigator
LIDEPPE | WAD | IKD | APDPE
24/7 Confidentiality
Private Investigators in Lisbon
Confidential Investigations and Legal Evidence
Private Investigation in Lisbon
Private Investigator in Lisbon
Leader in Investigation and Legal Evidence
Do you need a private investigator in Lisbon? Our Investigation Agency in Portugal, led by Private Investigator Alexandre Ribeiro, guarantees an immediate and strategic response in the capital, with headquarters in Parque das Nações.
We dominate the entire Lisbon Metropolitan Area — from the financial center of Avenidas Novas and Saldanha to historical areas like Belém and Restelo — ensuring irrefutable evidence.
We operate with full logistical efficiency in Sintra, Cascais, Loures, Almada, and Oeiras. Whether it involves discreet surveillance on the Segunda Circular or complex corporate investigations, our team ensures absolute confidentiality and results admissible in court.
Specialties in Private Investigation in Lisbon
With a high-level performance throughout the Greater Lisbon region, the company Detetives Privados Portugal offers a diverse range of specialized services. Identify the area that best suits your needs and find out how our team can intervene with maximum discretion and technological efficiency.
Private Investigation in Lisbon
Specialized and discreet surveillance in cases of infidelity, monitoring of behaviors, and protection of minors with detailed reports.
Heritage Investigation in Lisbon
Rigorous asset tracing, debtor location, and identification of hidden assets to support inheritance or foreclosure proceedings.
Business Intelligence in Lisbon
Protecting your business against unfair competition, internal theft, or fraudulent absenteeism, with a focus on corporate intelligence and security.
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Technological Investigations in Lisbon
Advanced detection of listening devices and digital forensics to ensure the integrity of your communications and computer data.
FAQ's
Is it legal to hire a private investigator in Portugal?
Yes. What the law limits is not the contracting itself, but the methods. It is not permitted to intercept communications, access other people's accounts or devices, enter private property without authorization, or install listening devices. The collection of information is done in a public space or a space accessible to the public and in accordance with the GDPR.
Which municipalities in Greater Lisbon do they cover?
We cover the Lisbon municipality and the entire metropolitan area: Oeiras, Cascais, Sintra, Amadora, Odivelas, Loures, Almada, Seixal, Barreiro and Setúbal. The team's proximity allows us to start surveillance with little advance notice, which is crucial when the client identifies a pattern of behavior with a predictable date and time.
How long does an investigation take?
It depends on the objective. A one-off address or workplace verification can be completed in a few days. Behavioral monitoring typically requires two to three weeks to gather a consistent pattern and not just isolated incidents. In the quote, we always provide an estimated timeframe before starting.
Is the investigation confidential? Does the person being investigated ever find out?
All client relations are governed by a confidentiality agreement. The person under investigation is not contacted, notified, or approached at any time, and fieldwork is conducted in a way that avoids detection. Case data is not shared with third parties without the client's express instruction.
How does the first meeting go?
The first meeting serves to understand what the client intends to prove and whether this is legally possible. We gather the available facts, define the specific objective, and present the necessary resources. Only then is a quote issued. This can be done in person at our Lisbon office, via video call, or by phone.
Do they conduct business due diligence and verification of business partners?
Yes. In Lisbon, a significant portion of the requests come from companies: verification of the suitability of partners, suppliers and candidates, investigation of unfair competition and violation of non-compete agreements, location of debtors and assessment of assets, and investigation of sick leave and absenteeism.
Do they perform OSINT research and cryptocurrency tracking?
Yes. OSINT investigations gather and cross-reference information available from open sources—public records, digital presence, corporate affiliations—to build a verifiable profile. In cryptocurrency tracking, we follow the path of transfers on the blockchain with the aim of identifying destinations and conversion points, especially in cases of fraud and misappropriation of funds.
Private Investigators Portugal
Contact Information
Address
Avenida D. João II, R. do Mar Vermelho 50, 1990-095 Lisboa
Contact
Opening Hours
24/7 Customer Service
Agency led by Alexandre Ribeiro – Professional and confidential investigation throughout Greater Lisbon.
