THE 10 BEST Private Investigation Services in PORTLAND, OR
| Business Name | Key Services | Best For | Address | Hours | PS Rating |
|---|---|---|---|---|---|
| Cornerstone Investigative Services | Surveillance, Background Checks, Fraud Investigation | Corporate & Legal Cases | 650 NE Holladay St, Ste 1600, Portland, OR 97232 | Mon-Fri: 9:00 AM – 7:00 PM | 4.8/5 |
| Girl Friday Investigations | Domestic Cases, Missing Persons, Process Serving | Family & Relationship Issues | 11575 SW Pacific Hwy #179, Portland, OR 97223 | Open 24 Hours | 4.3/5 |
| PI Services, LLC | Process Serving, GPS Tracking, Small Claims | Budget-Conscious Clients | 4550 SW Betts, Ste 157, Beaverton, OR 97005 | Mon-Thu: 8:00 AM – 5:00 PM, Fri: 8:00 AM – 4:00 PM | 4.6/5 |
| Northwest Investigations & Consulting | Insurance Claims, Legal Support, Surveillance | Insurance & Legal Professionals | PO Box 90576, Portland, OR 97209 | Available 24/7 | 4.7/5 |
| Gunderson Services | Criminal Investigations, Surveillance, Asset Searches | Attorneys & Businesses | 4411 NE Tillamook St, Portland, OR 97213 | Mon-Fri: 12:00 PM – 4:30 PM | 4.2/5 |
| Snelling Private Investigators | Fraud Detection, Workers Comp Claims, Surveillance | Corporate Fraud Cases | 8885 SW Canyon Rd, #C10, Portland, OR 97225 | By Appointment | 4.5/5 |
| Diligent Investigations, LLC | Litigation Support, Corporate Investigations, Surveillance | Law Firms & Corporations | 4207 SE Woodstock Blvd #108, Portland, OR 97206 | Mon-Fri: 9:00 AM – 5:00 PM | 4.6/5 |
| Babnick and Associates | Background Checks, Criminal Defense, Missing Persons | Criminal & Civil Cases | PO Box 90611, Portland, OR 97290 | By Appointment | 4.7/5 |
| PDX PI | Financial Investigations, Domestic Cases, Surveillance | Comprehensive Investigations | 121 SW Salmon St, Ste 1100, Portland, OR 97204 | Mon-Sat: 8:30 AM – 6:00 PM | 4.4/5 |
| Expert Investigations, Inc. | Insurance Fraud, Risk Management, Corporate Cases | Insurance Companies | Beaverton, OR (Pacific Northwest) | By Appointment | 4.5/5 |
#1. Cornerstone Investigative Services – Best for Corporate & Legal Cases
Key Highlights:
- Over 100 years of combined investigative experience across their team
- Founded by a former law enforcement professional with 26+ years experience
- Customized investigative strategies for each unique client case
Cornerstone Investigative Services has been serving Portland since 2014. The company specializes in helping corporations, law firms, and insurance companies with complex investigations. Their team consists of licensed professionals who are deeply familiar with the Portland metro area and beyond.
The agency offers comprehensive services including surveillance, background investigations, fraud detection, and asset searches. They pride themselves on attention to detail and thoroughness regardless of case complexity. Their investigators handle cases locally in Oregon as well as nationally when needed.
Clients appreciate their professional approach and free telephone consultations. The company uses advanced technology and proven investigative techniques to deliver results. Whether you need help with a legal case or corporate investigation, Cornerstone provides reliable support with email invoicing and online file sharing for convenience.
#2. Girl Friday Investigations – Best for Family & Relationship Issues
Key Highlights:
- Woman-owned business with 18+ years of experience in private investigation
- Available 24 hours a day for urgent matters
- Specializes in domestic cases, infidelity, and missing persons
Girl Friday Investigations is led by Laurie Potterton, a licensed private investigator serving Portland and SW Washington. The company has built a strong reputation for handling sensitive domestic matters with professionalism and compassion. They understand that family issues require discretion and care.
The agency excels at finding missing loved ones, conducting background checks, and surveillance work. Many clients have praised their quick response times and ability to locate people that others couldn’t find. Girl Friday also offers process serving and skip tracing services.
Their 24/7 availability makes them ideal for urgent situations. The company provides free consultations and works closely with individuals, law firms, and corporate clients. With competitive pricing and a track record of success, Girl Friday Investigations has helped countless families get the answers they need.
#3. PI Services, LLC – Best for Budget-Conscious Clients
Key Highlights:
- Celebrating 27+ years of service in the Portland metro area
- Transparent pricing listed on their website
- Experienced team with minimum 8 years per investigator
PI Services stands out for their honest, upfront pricing and extensive experience. Owner Mark Ososke has been conducting private investigations since 1988 and obtained one of the first Oregon PI licenses when the state began licensing in 1998. This longevity speaks to their reliability and expertise.
The company offers a full range of services including surveillance, locating people and assets, background checks, and process serving. They also help with small claims assistance and writs of garnishments. Their website provides detailed service descriptions and pricing, making it easy for clients to understand costs upfront.
PI Services primarily works with attorneys, corporations, and collection departments, but also assists the general public. Their professional process servers have decades of experience and achieve high success rates. Clients consistently praise their responsiveness, transparent communication, and reasonable fees. The company covers all of Oregon and offers free consultations.
#4. Northwest Investigations & Consulting – Best for Insurance & Legal Professionals
Key Highlights:
- Full service agency with 22+ years delivering first-class results
- Available 24/7 for urgent investigation needs
- Experienced in both insurance claims and legal investigations
Northwest Investigations & Consulting serves Portland and clients worldwide. The company was founded by Steven Robinett and focuses on providing personalized, professional service to insurance companies, law firms, and businesses. Their team has over 30 years of licensed professional investigation experience.
The agency handles everything from civil and criminal investigations to insurance claims handling. They specialize in motor truck cargo, inland marine, bodily injury, fraud, and liquor liability cases. Their investigators conduct methodical inquiries to properly collect and document evidence.
Northwest Investigations is a member of multiple professional organizations including the Association of Licensed Investigators and Oregon Casualty Adjusters Association. They offer free consultations and maintain a central assignments center in Portland for efficient case coordination. Clients appreciate their quick response times and thorough reporting.
#5. Gunderson Services – Best for Attorneys & Businesses
Key Highlights:
- Serving Portland area for approximately 20 years
- Offices in Oregon and Washington with veteran-owned designation
- Specializes in criminal and civil legal support
Gunderson Services provides investigation and security services to attorneys, businesses, and individuals throughout Oregon and Washington. Their investigators are certified in interview and interrogation techniques and regularly work on criminal cases ranging from restraining orders to serious felonies.
The company has built strong relationships with local, national, and international law firms. They develop clear investigation plans tailored to each case and provide comprehensive reports with photos and videos when appropriate. Attorneys frequently acknowledge that Gunderson has contributed to case success.
Their surveillance capabilities use advanced technology and equipment. The team can blend into any environment to capture evidence discreetly. Gunderson also handles business investigations, background checks, asset searches, and probate matters. They serve federal government agencies, banks, and clients around the world.
#6. Snelling Private Investigators – Best for Corporate Fraud Cases
Key Highlights:
- 40 years of fraud and theft investigation expertise
- California and Oregon licensed with extensive surveillance experience
- Specializes in workers compensation and insurance fraud
Snelling Private Investigators brings four decades of genuine investigation experience to every case. Director Donna Snelling earned recognition in California for securing the state’s first fraud workers compensation “take nothing” award, which influenced California criminal law. She later opened a Portland office to serve the Pacific Northwest.
The agency excels at covert surveillance combined with background and legal investigation. Their team has managed thousands of successful cases for government, business, legal, and private clients across Washington, Oregon, California, and nationwide. They specialize in human and technology intelligence.
Snelling focuses on corporate clients needing fraud detection, workplace investigations, and liability case support. Their surveillance teams are known for outstanding proficiency compared to other investigators. The company provides expert testimony and prepares comprehensive reports for legal proceedings. They offer personalized service and maintain high professional standards.
#7. Diligent Investigations, LLC – Best for Law Firms & Corporations
Key Highlights:
- Over 12 years serving the Pacific Northwest since 2012
- Owner has 10 years experience at a busy Chicago PI firm
- Bonded, insured, and offers free consultations
Diligent Investigations was founded by Robert Grady, a licensed private investigator with extensive experience in both urban and suburban investigation work. He has conducted numerous skip traces, surveillance operations, stakeouts, and interviews supporting litigation across all socioeconomic levels.
The company specializes in insurance investigations, corporate investigations, litigation support, and domestic investigations. They understand that no two cases are the same and tailor their approach to each client’s specific needs. Clients can expect fast turnaround times and work that meets or exceeds expectations.
Diligent Investigations also offers process serving with multiple service levels including standard, priority rush, and immediate rush options. Their investigators engage in continuing education to maintain the highest skill sets and stay current on legal and ethical concerns. The company serves Multnomah, Clackamas, Washington, and Clark counties.
#8. Babnick and Associates – Best for Criminal & Civil Cases
Key Highlights:
- Former Portland Police Bureau Captain with 30+ years experience
- Juris Doctorate degree and extensive investigative training
- Provides services throughout Oregon and worldwide
Babnick and Associates is led by George Babnick, a retired Portland Police Captain who brings decades of law enforcement experience to private investigation. He has completed hundreds of hours of specialized investigative training and holds criminal justice degrees plus a law degree.
The company handles serious criminal matters, thefts, frauds, personal relationship investigations, and adoption cases. They have successfully investigated cases including murders, complex fraud schemes, and difficult missing persons cases. Babnick has taught investigation techniques to law enforcement throughout Portland.
Clients appreciate Babnick’s honest approach – he sometimes advises people on steps they can take themselves rather than immediately charging fees. The company uses innovative technology like surveillance equipment designed to blend naturally into environments. They offer free consultations and work with attorneys, businesses, and private individuals.
#9. PDX PI – Best for Comprehensive Investigations
Key Highlights:
- Finding answers for Portland clients for over 30 years
- Centrally located in downtown Portland
- Services include locate, background, domestic, surveillance, and financial investigations
PDX PI has been serving Portland for more than three decades from their downtown location on SW Salmon Street. The company provides comprehensive private investigation services for individuals, businesses, and legal professionals. Their longevity in the Portland market demonstrates reliability and expertise.
The agency handles a wide variety of investigations including people locates, background checks, domestic matters, surveillance operations, and financial investigations. They understand the Portland metro area thoroughly and have built extensive resources over their years in business.
PDX PI maintains weekday and Saturday hours with extended availability for client convenience. They offer professional, discreet service for sensitive matters. Clients have praised their responsiveness and willingness to help with difficult locate cases when other investigators didn’t respond. The company provides thorough investigations with detailed reporting.
#10. Expert Investigations, Inc. – Best for Insurance Companies
Key Highlights:
- Serves the Pacific Northwest from Beaverton location
- Led by former National FBI Academy graduate
- Specializes in insurance fraud and risk management
Expert Investigations focuses on serving insurance companies, corporations, and legal professionals throughout the Pacific Northwest. The company is led by Myron B. Sanders, who graduated from the National FBI Academy in Quantico, Virginia, and has over nine years of law enforcement experience.
The agency specializes in litigation support, asset investigations, background investigations, and human resources investigations. They excel at corporate and business investigations, risk management assessments, and insurance fraud detection. Their team also conducts skip tracing, witness locates, and recorded statements.
Expert Investigations brings law enforcement expertise to the private sector. They understand how to build strong cases with properly documented evidence. The company works with insurance adjusters, attorneys, and corporate clients who need thorough, professional investigations. Their experience in fraud detection makes them particularly valuable for insurance related cases.
How Much Does a Private Investigator Cost in Portland?
The cost of hiring a private investigator in Portland varies depending on the type of service you need. Surveillance typically costs between $95 and $110 per hour for one investigator. Some agencies charge more for weekend or holiday work.
Background checks usually range from $50 to $300 depending on how comprehensive they are. Simple process serving starts around $65 for standard service in the local area. More complex investigations like missing persons or fraud cases may require retainers ranging from $500 to several thousand dollars.
Many Portland private investigators offer free consultations. This lets you discuss your case and get a cost estimate before committing. Some agencies provide transparent pricing on their websites. Always ask about all fees upfront including travel expenses, report preparation, and any other charges. Most reputable investigators will give you an honest assessment of costs before starting work.
Are Private Investigators Licensed in Oregon?
Yes, private investigators must be licensed in Oregon. The state requires licensing through the Department of Public Safety Standards and Training (DPSST). This ensures that investigators meet professional standards and follow legal requirements.
To become licensed, private investigators need at least 1,500 hours of investigative experience. They must pass a written competency exam with a score of 86% or higher. Applicants also need to pass a criminal background check and submit three professional references.
Licensed private investigators in Oregon must carry either a $5,000 surety bond or errors and omissions insurance. They must complete 32 hours of continuing education every two years to maintain their license. When hiring a private investigator in Portland, always verify their license status. You can check this through the DPSST website to ensure you’re working with a properly licensed professional.
What Can a Private Investigator Legally Do in Portland?
Private investigators in Portland can legally conduct surveillance, perform background checks, and locate missing persons. They can take photographs and videos in public spaces where there is no reasonable expectation of privacy. They can also serve legal documents, search public records, and interview witnesses.
However, private investigators cannot break laws to gather information. They cannot trespass on private property, hack computers, wiretap phones, or impersonate law enforcement. They must follow all federal and state privacy laws. Private investigators cannot make arrests, though they can detain someone if they witness a crime.
Licensed private investigators can testify in court about their findings. They work closely with attorneys to gather evidence for legal cases. In Portland, many investigators specialize in specific areas like insurance fraud, domestic cases, or corporate investigations. The best practice is to hire a licensed investigator who understands Oregon laws and conducts investigations ethically and professionally.