Certainty in uncertain situations: discreet, careful, with evidence you can use.
You usually don't call us during an easy time. As an employer or landlord: an employee who is suspiciously often off sick (sick leave fraud), or a property being sublet without permission (housing fraud). Or, as a private individual: a suspicion of infidelity, worry about your child, a stalker who won't stop, an ex-partner who isn't being honest. These situations call for certainty, not more doubt. Santos Recherchebureau gives you that certainty: discreetly, lawfully, and with a report that genuinely helps, whether you represent an organisation or are a private individual.
Santos Recherchebureau carries out investigations for both organisations and private individuals. Employers, landlords and housing corporations turn to us for matters such as sick-leave fraud and housing fraud; individuals for matters such as infidelity, concerns about a child, stalking or maintenance fraud. Free, no-obligation advice, with a clear cost estimate always provided upfront. With us, you always get 9+ service.
Recognised and certified
Who we work for
I represent an organisation
Employer, landlord or housing corporation: sick leave, housing fraud and more.
Learn moreI'm a private individual
Infidelity, worry about your child, stalking or maintenance fraud.
Learn moreI'm a lawyer
For your own case or on behalf of a client: lawfully obtained, objective evidence for your proceedings.
Learn moreHow can we help your organisation?
Sick leave, housing fraud, corporate fraud and more. Choose your situation below to learn more.
Sick Leave Fraud Investigation
For employers: clarity when an employee is often off sick and abuse is suspected.
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Housing & Subletting Fraud Investigation
For landlords and housing corporations: the actual occupancy, documented.
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Surveillance & Observation Work
Static and dynamic surveillance by trained, experienced investigators.
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Digital Investigation for Organisations
OSINT and social media research for employers and organisations, lawful and evidence-ready.
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Corporate Fraud Investigation
Protection against financial, administrative or internal fraud within your organisation.
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Non-Compete & Non-Solicitation Investigation
Investigating breach of a non-compete or non-solicitation clause by a former employee.
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Evidence for Lawyers
Support gathering evidence for lawyers and legal proceedings.
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Tailor-Made Investigation
Doesn't your case fit a standard category? We think along in a tailor-made process.
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Mystery & Test Purchases
Objective checks on sales behaviour, compliance and customer experience via a test purchase.
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Pre-Employment Screening
Background screening prior to hiring, conducted discreetly and carefully.
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Camera Vehicles & Mobile Cameras
Our own camera vehicles and camera systems, with AI-assisted and 5G readout.
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Insurance Fraud & Personal Injury Claim Investigation
Investigating insurance fraud and questionable personal injury or disability claims, for insurers and employers.
Learn moreHow can we help you?
Every investigation is tailored. Choose your situation below to learn more.
Four clear steps
Free intake call
We discuss your situation and carefully map out the goal of the investigation, free of charge and confidential.
Strategy & plan of approach
You receive a clear plan and cost estimate. We start as soon as you approve it.
Careful execution
The investigation is carried out discreetly by experienced, licensed investigators, with interim updates where needed.
Objective final report
You receive a clear, factual report with findings you can act on, including in legal proceedings.
Why Santos Recherchebureau?
- Licensed by the Dutch Ministry of Justice & Security (POB 7635)
- GDPR-registered with the Dutch Data Protection Authority
- Personally led by two owners, with a 9+ mentality
- Specialist per case: see how we work
- Free intake call, no obligation, with a clear cost estimate up front
- Objective reporting, factual and suitable for legal use
Direct personal contact
Prefer to call or message right away?
Free and no obligation
Active nationwide, office in Utrecht
Our private investigators work throughout the Netherlands, from our office in Utrecht. See where we are active:
“Zeer snel en discreet de vraag beantwoord. Ga zo door!”
“Fijne samenwerking gehad met Santos. Snel schakelen, duidelijke terugkoppeling en een zorgvuldige aanpak. Zeker aan te bevelen.”
“Professional, incredibly efficient and helpful service. Would highly recommend Santos Recherchebureau B.V and their services. Thank you!”
“Spik en span te werk gegaan.”
“I'm very satisfied with the services of this Private Investigation company Santos R BV. Niels the private investigator responded to me and was able to give me the result after two hours. Very impressive, I would recommend this company to anyone seeking a great professional service.”
“Ik belde met Santos voor advies. Hij nam de tijd om te luisteren naar mijn verhaal en kwam met een eerlijk, transparant en goed advies over wat nog mogelijk was in mijn situatie. Dank voor het fijne overleg en advies!”
“Heel netjes en professioneel geholpen. Ze geven eerlijk en open advies.”
“Wij zijn opgelicht voor ruim 1000 euro. De vermoedelijke dader gaf een woonadres, dus wij wilden daar meer over weten. Binnen een dag vond Santos de eigenaar van de huurwoning, voor iets meer dan 100 euro. Ik ben ervan overtuigd dat dit bureau het onderzoek goed had kunnen afronden.”
“Zeer goede ervaring met Santos. Ingezet voor een bedreigende privésituatie, onder andere afpersing en bedreiging, zelfs na aangifte bij politie en recherche. Uiteindelijk snel een gericht resultaat en het best mogelijke advies, met nazorg die normaal niet gebruikelijk is. Ik zou ze zeker opnieuw inschakelen en aanbevelen.”
“Ik heb een zeer goede ervaring met Santos. Ze zijn professioneel en gaan uiterst discreet en vakkundig met een situatie om. Door de persoonlijke benadering voel je je als klant goed begrepen, en ze leveren snel het gewenste resultaat. Kortom, ik kan Santos zeker aanbevelen!”
Frequently asked questions
What business investigations do you carry out?
Santos Recherchebureau supports employers, landlords and housing corporations, in particular with sick leave fraud (an employee who is suspiciously or repeatedly off sick) and housing fraud (suspected subletting). See all our business investigations.
Is hiring a private investigator legal?
Yes. Santos Recherchebureau operates under POB licence 7635 from the Dutch Ministry of Justice & Security, within the Wpbr and GDPR framework. Read more on our Is it legal? page.
What does a private investigator cost?
The hourly rate is €99.50 excl. VAT. Private investigations start from €675, depending on type and duration. See the full breakdown on our cost page.
How quickly can I get an intake call?
You'll receive a response to your request within 24 hours, by phone or WhatsApp if preferred.
How long does an investigation by a private investigator take?
The duration depends on the complexity of the investigation. Some cases are completed within a few days, while others may take several weeks or even months. At Santos Recherchebureau you get a realistic time estimate in advance.
Can the evidence be used in court?
Evidence collected legitimately and legally can, in most cases, serve as substantiation in legal proceedings. Santos Recherchebureau provides a clear and substantiated report, which puts you in a stronger position in litigation.
How is my privacy protected during the investigation?
Your privacy is paramount. Santos Recherchebureau works according to strict confidentiality guidelines and legal provisions. We treat your data with discretion and never share information without your consent.
Want to know what we can do for you?
Get in touch, free and without obligation. We respond within 24 hours and think along with you, discreetly.
4.9/5 · 16 reviews on Google · Licensed investigation bureau · POB 7635
