In a context where the collection of reliable and verified information is often essential for resolving personal or commercial matters, hiring a private detective is an increasingly common option in France. But how much does it actually cost? On what basis are the costs of a mission calculated?
The cost of a private detective in France: rates for Groupe Hypérion agencies

What is a private detective and why are their services necessary?
Before detailing the costs, it is essential to understand the role of a private detective. A private detective is a licensed professional authorized to conduct private investigations on behalf of private or professional clients. We are often called upon for:
- Family investigations (divorce, infidelity, child custody)
- Missing person searches
- Financial investigations (fraud, insolvency)
- Unfair competition (industrial espionage, data theft)
- Abusive sick leave (companies or administrations)
In France, hiring a private detective is legalized and regulated by the Internal Security Code, which guarantees that investigations are conducted in compliance with legislation. We provide rapid and discreet solutions for issues where other investigation methods (police, accountants, etc.) are insufficient.
Services offered by Groupe Hypérion
We offer a wide range of services, tailored to the needs of our clients, whether you are individuals or businesses.
Here is an overview of our main services:
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Combating unfair competition
Companies often call upon investigators from Groupe Hypérion to combat industrial espionage, the theft of clients, or illegal poaching. These investigations, often long and complex, are crucial for preserving the competitiveness of companies. We have made this our specialty through an increased mastery of the strategies possible in these types of investigation.
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Fraud and financial investigations
Financial fraud, misuse of corporate assets, or simulated insolvency are areas where our Agencies have acquired solid expertise. The agency conducts investigations to recover funds, identify fraudsters, and provide valid evidence before a court.
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Family investigations
Cases of adultery or child custody disputes often require legal evidence that only a private detective can obtain. Groupe Hypérion assists clients in the search for legal evidence for divorce or custody cases.
The cost of private detective services: how to determine a budget for an investigation?
During the first interview, in person or by telephone, our objectives will be to evaluate the feasibility of the mission and then define an appropriate budget for your request.
Among the elements we take into account, we will base our assessment on the following:
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The nature of the investigation
Investigations vary in complexity. Family matters such as suspicions of adultery are often simpler and faster to manage, while investigations related to unfair competition or financial fraud can require several weeks of work.
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The duration of the investigation
We believe in working by offering investigation packages. These packages vary according to the complexity of the investigation and the time requirements related to each case.
A simple case is generally billed between 10 and 20 hours, i.e., €800 to €1,600 including VAT. A more complex case that requires a more significant setup between 30 and 50 hours will be billed between €2,300 and €4,000 including VAT.
Administrative investigations are billed based on the search. A simple address search is a flat fee of €360 including VAT, but a more complex investigation will require a detailed quote.
These prices are given as an indication; each case requires a unique approach, and that is what makes our expertise important. We always establish a quote prior to the investigation.
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Equipment and technologies used
We may be required to deploy specific equipment, for example during the detection of listening devices, microphones, or cameras. We perform these services based on a quote adapted to the surface area and the desired objective. We are also able to analyze Android or iPhone phones as well as computers.
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The number of detectives mobilized
Some investigations require the mobilization of several detectives to cover a larger territory or handle several aspects of a case simultaneously. The use of several professionals naturally increases costs. We always prioritize the deployment of two agents for each case. Our philosophy is to offer the best service, as discreetly as possible, while providing the maximum amount of evidence. Our field experience has led us to understand the absolute necessity of putting the necessary human resources in place.
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Additional costs
Additional costs may include travel, accommodation, and all other specific needs for each mission.
Groupe Hypérion also offers international services, which may involve travel costs depending on the client’s needs. We also have partner investigators throughout the country in order to be able to deploy with incomparable speed and efficiency. The advantage is that our “referents” in a given territory will have perfect knowledge of the laws and possibilities for action in force in their country.
Price estimation for Groupe Hypérion services
Although costs vary depending on the investigation, here is an estimate of the rates for services offered by Groupe Hypérion:
- Family investigation (adultery, child custody, solvency): Prices vary between €800 and €2,500 including VAT depending on the complexity of the case.
- Unfair competition and industrial espionage: These more complex investigations generally cost between €2,000 and €10,000 excluding VAT depending on the size of the company and the resources needed to collect solid evidence.
- Financial investigations and fraud: For complex investigations, such as fraud or insolvency, prices start at €3,000 excluding VAT and can reach €7,000 excluding VAT depending on the amount of data to be analyzed.
- Missing person search: The rate depends on the difficulty of the search and the means employed, with costs ranging from €500 to €5,000 including VAT.
These rates are, of course, indicative and may fluctuate based on the specifics of each case.
Why choose Groupe Hypérion for your investigations?
We distinguish ourselves from our competitors for several reasons:
- Experience and expertise: The experience of each agent operating in the field, all of whom are graduates and licensed by CNAPS.
- Cutting-edge technologies: The agency uses modern tools for detection but also during its investigations.
- International network: With partners worldwide, Groupe Hypérion is able to operate beyond French borders, which is an asset for investigations involving several countries.
- Guaranteed discretion: Confidentiality is essential in the field of private investigations, and our Groupe Hypérion Agencies are committed to respecting the privacy of our clients while providing them with concrete results.
Expertise that comes at a price
Hiring a private detective can represent a significant investment, but this investment can prove crucial for protecting personal or professional interests. Rates vary according to the complexity and specific needs of each investigation, but with our licensed Groupe Hypérion Agencies, you have the assurance of benefiting from a professional service, where each case is treated with the same rigor and importance.
We will always take the time to accurately assess your needs and offer you a quote adapted to the requirements of your request, as close as possible to your budget.
Contact Groupe Hypérion for any information or a free quote.
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