Compare private investigation companies in Washington and request free quotes.
Typically from $57 USD per investigator/hour. See prices →
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Allied Universal Compliance and Investigations, Inc.
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ATLAS INTERNATIONAL SECURITY & INVESTIGATIVE SERVICES
B. I. S. Protection, Consultants, Investigations, and Protection Services
Black Hawk Protection & Investigation
BLACKOUT INVESTIGATIONS & SECURITY SERVICES, INC
Champion Investigations & Security Consulting Services LLC
Command & Conquer Security & Investigations, L.L.C.
DELTA SIERRA EXECUTIVE PROTECTION, INTELLIGENCE, AND INVESTIGATIONS, LLC
DNP INVESTIGATIONS & SECURITY SERVICES, LLC.
Elohim investigations LLC
Global Protective Division and Investigations LLC
Grand Mission Security & Investigative Services
Private investigation in Washington covers surveillance, background and due-diligence research, and fraud or misconduct inquiries handled by a state-licensed investigator.
In Washington, demand for private investigation is driven by the federal government and its agencies and contractors and embassies, the diplomatic corps and K Street law firms and associations. The sectors that most rely on this service include federal government and contractors, embassies and the diplomatic corps, law firms, lobbying and associations, with specific needs in areas such as the downtown and Golden Triangle office core, K Street's law firms and associations, the federal buildings and the National Mall. The city's main security concerns — federal- and diplomatic-facility access control and corporate lobby and credential and visitor management — make working with a licensed, professional provider a priority investment for businesses and homeowners.
HireSecurityNow.com connects you with licensed private investigation companies in Washington. Compare options, review profiles and request free quotes to find the provider that best fits your needs and budget.
Estimated range per investigator/hour in Washington:
$57 — $170 USD
That puts Washington about 14% above the US national range ($50 — $150) — local wage floors, cost of living and competition for licensed officers all push rates up.
Licensed investigator, billed by the hour plus expenses (mileage, database access, equipment) and usually an upfront retainer. Surveillance and multi-investigator work bill higher than records-based research. Discuss the rate, retainer and likely total in writing before engaging.
Reference estimates. See private investigation prices in every city →
Before you hire
A buyer's guide to hiring a private investigator in the US: what PIs can and cannot legally do, state-by-state licensing, real hourly rates and retainers, how to vet a firm, and when to hire through a lawyer instead.
Read the private investigation buyer's guidePrivate security in District of Columbia is licensed at the state level by the the DC Department of Licensing and Consumer Protection (business and individual licenses) and the Metropolitan Police Department's Security Officers Management Branch (oversight and Special Police Officer signoff). A legitimate company operating in Washington holds a a Security Agency Business license, which means it has cleared DC DLCP and MPD's ownership, background-check and insurance requirements. Ask for that license number in writing and verify it yourself — a certificate on the wall tells you nothing about current standing, since a license can be suspended or revoked.
Hiring an unlicensed company is a risk you carry. In District of Columbia, operating without a license is civil penalty (dlcp), post-oct. 1, 2025 licensing framework (D.C. Code § 47-2853.208 (unlawful acts in subsecs. (a)-(b); civil-penalty authority in subsec. (d)), eff. Oct. 1, 2025). Since October 1, 2025, operating a security agency without a DLCP occupational license — or acting as a special police officer or private detective without a license and the Chief of Police's approval — violates D.C. Code § 47-2853.208(a)-(b), and subsection (d) empowers the DLCP Director to impose civil penalties (amount set by rule) and to deny, suspend, or revoke the license; the older $300 misdemeanor penalty under D.C. Code § 47-2846 was repealed effective October 1, 2025.
Washington scores 40/100 on our Crime Index (grade E), which makes it safer than 9% of the 759 US cities we track. The index is built from FBI Crime Data Explorer reports for a population of 693,645.
Crime Index
Crime rates describe a city, not a specific address — the right level of coverage depends on your block, your hours and what you're protecting. Use the neighborhood breakdown to see how Washington varies internally before you scope a contract.
See the full Washington Crime Index and neighborhood breakdown98 providers below list private investigation in Washington. Ranking is based on verifiable signals, but the last checks are yours — and they are the ones that decide whether a contract holds up.
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