Market Size for Private investigation agency in 2026 [Example]

The total available market (TAM) for private investigation services globally is substantial.

There are over 500,000 licensed private investigators worldwide, servicing a variety of clientele including individuals, businesses, and law firms.

Assuming an average annual spend of $80,000 per investigator on both individual and corporate contracts yields a TAM of $40 billion.

The serviceable addressable market (SAM) narrows down to specific client demographics that private investigators can effectively reach.

Focusing on personal and corporate investigations in developed countries, we estimate around 50,000 potential clients in the USA alone, with an average spending of $80,000 annually.

This results in a SAM of around $4 billion, considering factors like competition and regional demand.

The serviceable obtainable market (SOM) estimates how many clients can realistically be captured in the first year.

Assuming a conservative market penetration of 10% of the SAM, we can expect to gain around 5,000 clients.

At an average spend of $80 per investigation (with each client utilizing multiple services), this would translate into approximately $400,000 in annual revenues.