Alexandre Ribeiro – Certified Private Investigator
LIDEPPE | WAD | IKD | APDPE
24/7 Confidentiality
Private Investigator in Valongo and Ermesinde
Private Investigation Agency
Private Investigation Agency
Valongo and Ermesinde
Private Detectives Portugal operates in Valongo and Ermesinde with a dedicated structure, prepared to meet the specific needs of this area. Our local unit is fully integrated with our agency in Porto .
We combine in-depth knowledge of the terrain with the agility needed for complex investigations, guaranteeing fast, discreet, and legally sound results.
All operations are overseen by Detective Alexandre Ribeiro — Partner No. 33 of LIDEPPE, member of WAD, IKD and APDPE — whose leadership ensures the rigor and integrity that define our agency.
Private Investigation Specialists
Our coverage extends throughout the Greater Porto area , ensuring that our clients can count on the same standard of quality and confidentiality at any point in the network, including units in Vila Nova de Gaia, Gondomar, Matosinhos, Maia, Vila do Conde & Póvoa de Varzim, and Trofa & Santo Tirso.
Regardless of the area where evidence collection or technical surveillance is needed, our intervention protocol is permanently aligned, facilitating an agile, integrated, and cross-sectoral response across all municipalities.
Valongo and Ermesinde: industrial tradition and proximity to Porto
Valongo maintains a strong identity linked to granite extraction and the manufacturing industry , while Ermesinde functions as an important residential and rail hub , with close proximity to the center of Porto.
This combination generates a balanced demand between business research, linked to the region's traditional sectors, and specific cases in the most densely populated residential areas.
Private Investigation Services
We operate in throughtout the whole country across four areas of technical specialization . Our 11 services are structured into 4 types of investigations, guaranteeing solid evidence and the strictest professional confidentiality throughout the country. You can choose the one that best suits your situation here.
Frequently Asked Questions
1. Do you have a permanent local team in Valongo and Ermesinde?
Our operation here works in close coordination with the Porto Agency, which allows us to mobilize a dedicated team for the area whenever a case requires it.
2. Do they conduct investigations that cross municipal boundaries, for example between Valongo and Gondomar?
Yes, it's a common situation. Our network is prepared to follow a case across multiple municipalities, always maintaining the same technical protocol.
3. How much does an investigation cost in Valongo or Ermesinde?
We do not work with hourly rates or a public price list. We provide a fixed price after a free initial assessment, with local travel expenses already included.
4. Do they conduct research related to the granite industry and mining?
Yes, it's a significant part of our activity in the region — unfair competition, information leaks, and verifying partners in businesses linked to this sector.
5. Do they provide surveillance in the residential areas of Ermesinde?
Yes, discreet surveillance in family and residential settings is one of the most frequent requests in this part of the region.
6. Do I need to go to an office to open a case?
It's not mandatory. The process can begin by phone, video call, or email, with the same contractual formality.
7. Do they conduct electronic sweeps and bug detection in Valongo and Ermesinde?
Yes, our mobile teams have their own equipment for detecting hidden cameras, microphones, and GPS trackers, in both residential and business settings.
8. Do they conduct surveillance at night or on weekends?
Yes. Most useful surveillance takes place outside of normal business hours, and the team adapts to the specific routine of each case.
Contact our Agency in Valongo and Ermesinde
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