Hire a Private Investigator

National Inquiry Agency is one of the few private investigation firms in Australia Founded by a female Solicitor and Private Detective. Since being established in 2019, our private detective agency has been hired to service clientele from varied backgrounds. This includes mothers, fathers, professionals, high-net worth individuals, business owners and individuals with particular needs.

Who are our Private Investigators?

Our investigators comprise of ex-military, ex-police personnel, and those that have trained with other institutions in surveillance strategy and techniques, investigations, OSINT and law. All of our investigators hold current private investigator licences and insurance to ensure your investigation is carried out in a legal and compliant matter.

Why Hire a Private Investigator?

A private investigator is hired to catch out cheating spouses, locate people that have unpaid debts through skip tracing, carry out background checks to find skeletons in a person’s closest, process serving and carry out surveillance on business owners and individuals.
When it comes to resolving personal or professional matters that require discretion, expertise, and precision, hiring a private investigator is often the smartest choice. Private investigators, commonly referred to as PIs, offer a wide range of services designed to uncover the truth, gather evidence, and provide you with peace of mind.

Where NIA Private Investigators Work?

We assist with obtaining proof to assist with uncovering the truth, assisting with litigation and getting results. We have private investigators available across the country, including but limited to Sydney, Brisbane, Melbourne, Adelaide, Tasmania, Darwin, Perth as well as all regional and rural areas.

What's the Process to Hire a Private Investigator?

In order to start an investigation with us, Click on our ‘Contact Us’ page on our Website and fill out our online form with your name and contact details, and one of our private investigators will be in contact with you. Our private investigators will then set up a time to discuss your needs in a confidential matter, explain what information is required to commence an investigation, the strategy behind the investigation as well as pricing
Skip Tracing

Your Success

National Inquiry Agency (NIA) is a Sydney based Private Investigation firm specialising in location searches and missing persons, background checks, process serving and corporate investigations.

Our services are provided to businesses and individuals nationwide and overseas, minimising business loss and risk, and providing our clients with peace of mind.

We offer our clients the ability to gather ‘hard to find evidence’, supporting individuals, small to large businesses and the legal services sector. We utilise modern methods of tracing to locate subjects, as well as new technology for the surveillance of persons.

We have competitive rates, and established service level agreements with our clients to ensure we deliver results to a high standard and within time frames.

Process Serving Sydney

Our Team

Our Investigators and Agents are fully licensed in accordance with statutory legislation and regulations.

Our Team is made up of qualified solicitors, ex-military personnel and individuals that have worked in the legal services sector for many years.

Our experience allows us to pay attention to the details that are crucial to the collection of admissible evidence, act in accordance to governing legislation and communicate our outcomes in a clear and efficient manner.

What Can a Private Investigator Do for You?

Infidelity Investigations:

One of the most common reasons people hire private investigators is to investigate suspicions of infidelity. PIs use surveillance techniques and cutting-edge technology to uncover evidence of cheating spouses or partners, helping you make informed decisions about your relationship.

Background Checks:

Whether you’re considering a new employee, business partner, or a potential romantic interest, private investigators can conduct thorough background checks to reveal any hidden information, such as criminal records, financial history, or past affiliations.

Corporate Investigations:

Private investigators assist businesses in uncovering fraudulent activities, employee misconduct, and intellectual property theft. They conduct covert operations to safeguard your company’s assets and reputation.

Missing Persons:

When a loved one goes missing, the police may not always have the resources or time to devote to your case. Private investigators specialise in locating missing persons, offering hope and closure to worried families.

Legal Support:

Private investigators are valuable assets in legal proceedings. They can gather evidence, interview witnesses, and help build a strong case for lawyers, enhancing your chances of a successful outcome in court.

Why Hire a Private Investigator through NIA?

Expertise and Experience:

Our team of skilled private investigators boasts years of experience and expertise in various investigative techniques. We are dedicated to solving your problems discreetly and efficiently.


We understand the sensitive nature of your concerns. Our commitment to confidentiality ensures that your personal and professional matters remain private throughout the investigation process.

Tailored Solutions:

Every case is unique, and we customise our approach to meet your specific needs. We work closely with you to devise a strategy that aligns with your objectives.

Timely Results:

We prioritise delivering timely results. You won’t be left waiting for answers; we aim to provide you with the information you need as quickly as possible.

Frequently Asked Questions

Especially in large cities like Melbourne and Sydney, there are a lot of private investigators out there that compete on price point. Its important to note the cheapest is not always the best. National Inquiry Agency is known for quality results and meticulous reporting. Therefore, we are not the cheapest around.
It does not have to be. Having processed thousands of cases, our private investigators have been exposed to different circumstances revolving around client’s needs. When you hire us, and you are contacted, we discuss the needs of your case with a non-judgmental attitude.
Our strong reputation speaks for itself. We have an online secure case management system that stores securely our client’s personal information, sends our regular updates to clients, tracks budgets, and is protected by remote servers, and double authentication. We find protecting your information crucial. We also have had positive media coverage and often contribute to our investigation community discussing new and upcoming techniques.