How Much Does a Private Investigator Cost in Prague?

A private investigator in Prague typically costs between CZK 900 and CZK 2,000 per operative per hour, or roughly CZK 12,000 to CZK 22,000 for a standard 10 to 12 hour surveillance day with a two-person team. Most licensed agencies also ask for an upfront retainer of CZK 25,000 to CZK 75,000, drawn down against hours actually worked. Those are the numbers most people are looking for. What follows is why the range is so wide, and how to read a quote properly before you commit.

What does a private detective charge per hour in Prague?

Hourly billing is the norm for field work. In Prague, a single operative on straightforward static observation sits at the lower end of the range. Mobile surveillance through city traffic, work requiring English, German or Russian, and anything that must survive scrutiny in court sits at the upper end, because it requires more people, better equipment and a stricter documentation standard. Desk-based work such as open-source research, corporate record checks and data intelligence is usually quoted per assignment rather than per hour, because the output is a defined report rather than an open-ended commitment of time.

What drives the final invoice?

• Team size. One operative can hold a fixed observation point. Following a subject reliably through Prague traffic and public transport almost always needs two or three, otherwise the surveillance is lost within the first hour.
• Predictability of the subject. A person with a fixed routine can be documented in a few sessions. An erratic schedule means standby hours, and standby hours are billable.
• Evidence standard. Material intended for a Czech court needs timestamped photography, contemporaneous logs, named operatives and a documented chain of custody. That discipline takes longer than an informal briefing for internal use.
• Language and cross-border elements. Cases involving foreign nationals, foreign registries or travel outside Czechia carry a premium, and mileage and accommodation are billed on top.
• Reporting depth. A short factual summary costs less than a court-ready evidential bundle with exhibits and a statement from the operative.

How much does a typical case cost end to end?

As a practical guide, a focused matrimonial or surveillance engagement in Prague usually resolves within 20 to 40 operative hours, which puts the realistic total between CZK 30,000 and CZK 80,000. Corporate matters, due diligence and asset tracing are quoted per phase rather than per hour, and a first-phase report commonly falls between CZK 20,000 and CZK 60,000 depending on how many jurisdictions and entities are involved. Complex multi-country asset work runs higher, and any agency that promises an exact figure before understanding the facts is guessing.

Why is a retainer standard?

A retainer protects both sides. The client gets a defined budget ceiling for the phase and a written scope. The agency gets paid for the time it has already committed, which is what makes it possible to refuse to inflate hours later. Any firm willing to begin serious field work without a retainer is either inexperienced or planning to bill aggressively once you are invested in the outcome.

Is a cheaper investigator ever the better choice?

Rarely, and the reason is structural rather than snobbish. The Czech market has a long tail of unlicensed operators quoting half the going rate. Their material is frequently unusable: obtained by accessing devices or accounts without consent, collected in breach of the GDPR, or delivered with no chain of custody at all. When that happens the client pays twice, once for the unusable work and again for a licensed firm to redo it lawfully, and sometimes carries legal exposure of their own. Before comparing prices, confirm the agency holds a Czech trade licence for detective services, carries professional liability insurance, and will put the scope and rate in writing.

Questions to ask before you sign

• What is the hourly rate per operative, and how many operatives will the case require?
• Is there a cap on the phase, and what happens if the case needs to grow?
• Are travel, mileage, accommodation and report preparation billed separately?
• Will the report be prepared to a standard my lawyer can put in front of a court?
• Who owns the material, and how is it stored and eventually destroyed?

How Exero Group quotes

We quote in writing after a free initial consultation. The quote states the scope, deliverables, hourly rate, estimated hours and a clear cap. There are no per-page report fees, no markup on travel and no surprise line items. If a case needs to expand, we say so and obtain written approval before continuing, and where surveillance is unlikely to produce usable evidence we tell the client that before taking the money rather than after.

Prices in this article reflect the Prague market in 2026 and are indicative rather than a formal offer. For a realistic budget and timeline on your own matter, contact our team and describe the situation in plain language; you will have a written answer within one business day. You can also read our frequently asked questions for more on how Czech investigative work is structured.

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