Private Investigation in Japan
At Detective Agency Japan, we offer services to support applications for, and consultations with, investigative agencies in Japan via our website. Our services are designed for those who need private investigators to obtain information and gather evidence. If you are looking for a P.I. to conduct investigations on individuals or companies in Japan, perform counter-surveillance, or provide risk and business consultations, we encourage you to check us out. Payments can be made online using your credit card. Investigation reports can also be sent by email as PDF files.
Detective Agency Japan is one of Japan's leading investigation agencies, trusted by clients from all over the world. We specialize in various types of investigations, including private investigations, business-related surveys and consultations, and all kinds of evidence-gathering operations.
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Top-rated investigations in Japan
We are a reliable private investigation agency trusted by many lawyers.
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Reasonable fee
A deposit and guarantee refund system are available for international clients.
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Problems solving with our specialists
Our business alliance with a variety of professionals will support and guide you to solve problems.
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Private consultation in business fields
Business purpose requests for investigation and surveillance are also available.
If this is your first time hiring a private investigator, please feel free to ask us any questions or share any concerns you may have.
Most importantly, Detective Agency Japan is officially licensed and recognized by the Prefectural Public Safety Commission as one of the most trusted investigation agencies in Japan. If this is your first time hiring a private investigator, we are the best and most reliable choice to assist you.
Price Simulator Estimate Your Costs
One of the biggest concerns when hiring a detective is the "cost." Are you wondering "how much will it actually cost?"
Use our Price Simulator to check the investigation methods and fees suited to your specific needs for a smooth and transparent consultation!
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Our 5 missionsPROMISE
- We handle your cases personally and carefully.
- To understand your case properly, we might ask the behind story of your case. Our investigators are well experienced with handling your sensitive information, so your personal information will never be given to third-parties.
- We provide fee plan
within your budget. - We offer the best plan tailored to your case and budget. If you have any concerns about the cost, please feel free to ask.
- Our professionals support
your ideal future. - Our mission is to provide our clients with the information and support as they need. We dedicate our experience and professional expertise to helping you achieve the future you envision.
- We provide “keys” to pursue for sloving your problems.
- The very first step in solving your problem is gathering background information about your case. Our investigators will support you in figuring it out through detailed conversations.
- Your satisfaction is guranteed by our qualified services.
- Our investigators are well-trained and highly experienced in investigative techniques and problem-solving. We guarantee high-quality results.
Investigation flowSTEP 1 - 8
Pricing SystemPricing System
Turning uncertainty into peace of mind with clear and transparent costs
Fair and Transparent Pricing
It is natural to wonder: “How much will it actually cost to hire a private investigator?” Because the investigation industry often suffers from unclear pricing structures, we are committed to providing a transparent system that clients can trust. Every client’s situation and request is unique, which is why we strive to design the most suitable investigation plan at a fair and reasonable cost.
Three Reasons Clients Choose Us
1.Free Consultations and Estimates—As Many Times as Needed：We listen carefully to your concerns and objectives, without ever applying pressure or engaging in pushy sales tactics. Our specialized consultants explain the investigation details, timeframes, and costs in clear terms, and provide written estimates. You are welcome to consult with us as many times as necessary until you are fully satisfied.
2.No Hidden Fees—A Truly Transparent System：Once we present an estimate, you will never be charged additional fees without your prior consent. All costs are clarified and documented in the contract before the investigation begins.
3.Tailored Plans That Match Your Budget：Depending on your budget and objectives, we provide several options for the most efficient and cost-effective plan. We avoid unnecessary investigations, focusing only on collecting information that truly matters—helping to keep costs under control while maximizing value.
Detective investigation serviceSERVICE
VOICEclient experience
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For your first calling usFOR BEGINNER
Please feel free to contact us if this is your first time hiring a private investigator in Japan.
We can support your first step in hiring a private investigator or other professional services in Japan.
If you have concerns about hiring a private investigator for the first time, we recommend starting with an initial consultation. We can discuss the average cost of an investigation, provide an estimate for your specific case, and even help determine whether a private investigation is truly the right solution for your problem. The most common concern when considering an investigation is the cost, but we offer a variety of plans tailored to your needs and budget.
The most reputable detective agency by lawyers in Japan
years of experience since we were established as the investigation division of a law office.
Our detective agency was established in 1998 as the investigation department of a law firm, and we have accumulated years of experience in this field. Fortunately, many lawyers continue to recommend our services to their clients. Currently, we receive over 8,000 inquiries annually, including referrals from local police departments and public offices. Through ongoing communication with our clients, we have consistently achieved high levels of client satisfaction. Whether the evidence we provide is favorable or unfavorable, our clients appreciate having clear, objective information that helps them make informed decisions. This sense of responsibility continues to motivate us every day and drives us to maintain the highest quality standards in our work.
Why you should choose us
Under our corporate philosophy, "Insatiable Inquiry," we are all deeply committed to helping clients solve their problems, no matter how difficult the situation may be. In addition, we approach every case with honesty and reliability. This is how we are able to fully understand our clients’ concerns and provide the best possible support.
Importance and Value of Private Investigators from a Lawyer’s Perspective
Attorney Imai (Member of the Second Tokyo Bar Association) shares the following insights based on his professional experience:
“In the course of my legal practice, I have often had to advise clients by saying, ‘I’m sorry, but in this case you will need to rely on a professional investigator.’ There are many instances in which evidence crucial to a case could not be obtained through legal channels alone, yet was successfully uncovered with the help of a private investigator. In litigation, both the quantity and credibility of information can decisively affect the outcome. For this reason, I consider investigative work by professional detectives to be not only valuable but indispensable in resolving disputes. That said, it is unfortunate that some investigative agencies operate in ways that I find inappropriate. Therefore, when seeking assistance, it is essential to ensure that the investigator is trustworthy and that the engagement—both in method and cost—provides real value.”
- Attorney-Collaborated Investigations; Coordinated investigations carried out in close cooperation with legal professionals.
- How to Find and Select a Trusted Detective Agency; Guidance for individuals and businesses to identify and choose reliable investigators.
- Corporate Investigation Services; Specialized investigation solutions tailored for corporate clients.
Investigation requests
for all location in Japan acceptable
AREA
CONTACTCONTACT
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We also accept inquiries via WhatsApp. Questions or consultations will be reviewed and responded to by our investigation team.
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Detective agancy Japan
4-7-1 Jingumae 3F, Shibuya city, Tokyo, Japan ZIP 150-0001
Office open all year round, requests acceptable 24/7