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Hempstead Detectives

Browse these detectives with great ratings from Thumbtack customers in Hempstead.

NJ Private Investigators
from 6 reviews
  • 13 years in business
  • 8 hires on Thumbtack
Michael A.
Verified review

One of the Detectives, Rosa, did a check on the background of a company I was thinking of investing in. Thank goodness I did! It saved me money and potentially A LOT of aggravation! I'm forever grateful!

CPI Investigations
from 3 reviews
  • 3 hires on Thumbtack
Jeff P.
Verified review

This is a top-notch NYC investigation firm. Their surveillance team; including the professionally written reports, and close-up photography, is head and shoulders above the others. We have had a close working relationship with CPI for many years, and they always come through for our firm, and our clients. CPI also offers missing persons location services, sweeps for bugs and wire-taps, and even lie detection services (polygraph) for either business or personal investigation matters. If you or your business require investigative or protection services, call Mr. Banks or Mr. Pinto, for a prompt, efficient resolution.

  • 6 years in business
Susan W.
Verified review

Mr. Bonnie was very helpful and provided the information I needed in a timely manner. He was available by phone when needed and was polite and professional.


We are New Jersey based expert private investigators who service all NJ areas. We perform cheating-spouse investigations. Speak with a surveillance expert. We have 99.5% success rate at providing successful results without getting caught! We are experts at locating people, fleeing criminals and debtors. Call us today for your free consultation.


I was a former detective and chief polygraph examiner for the Queens district attorney's office. I am the president of CPI Investigations, a private detective firm with offices in New York & New Jersey. We specialize in lie detection, surveillance, child custody, missing persons, de-bugging background checks, bodyguards, and event security. We handle difficult and unusual cases. At CPI Investigations, we will exceed your expectations!

  • 6 years in business
  • 1 hire on Thumbtack

Private investigations are done by retired NYPD detectives. We are discreet and very professional, and we will cater to your investigative needs. We specialize in insurance fraud, matrimonial issues, family court, due diligence, background checks and many other investigations.


Providing results for our clients is the goal at Flagship Investigations. We accomplish this by keeping up with latest trends in the industry, staying current with the newest technologies and developing an individualized strategy with our clients. New and unique challenges are presented with every case we undertake at Flagship Investigations.


I am a licensed private detective conducting all types of civil and criminal investigations. I specialize in surveillance, witness location and obtaining statements.


Our services include surveillance, locating, photo, video and custody. We have been in the business for over 25 years. We have experience in all types of investigations. Call and you speak to the owner.


The Document Bureau is a licensed private detective and investigations agency providing the following: * Preemployment Background Screening Services * Employee Screening Services * Drug Screening Services * Driver's License Record Review * Employment, Education and Professional License Verification * Military Records Review * Lost Heir Search * Witness or Party Location * Asset Search * Criminal Background Search * Sex Offender Registry Search * Civil Litigation and Bankruptcy Record Search * General Investigations * Workers' Compensation Investigations * Insurance Investigations * Matrimonial Investigations * Security Consultation


We have all types of investigations and security services provided by retired NYPD detectives. Please contact us for a free phone consultation.

Q & A

Answers to commonly asked questions from the experts on Thumbtack.

What does a private investigator do?

First and foremost, good private investigators follow laws. Unlike on TV, they don’t break in windows or hack into hospital computer systems to get you intel. When you hire a private investigator, you’re hiring a professional to gather facts and find information for you. Although they can’t obtain certain information (such as health records), they do have access to information that most civilians do not. Often private investigators are hired to perform surveillance or background checks or investigate cases such as adultery, child custody, missing persons, hidden assets, or debugging, and theft or other crimes.

Private investigators can be hired to interview people and provide that information to the client, perform photo or video surveillance, monitor activity at a location where you suspect criminal activities or questionable behavior, track a person’s movements, find missing people, do deep-dive background checks, and more. Private investigation can be helpful if you’re trying to get a court order but need evidence. Private investigators can also help find birth parents. Nationally, the average price range for private investigation is $70-$210 per hour.

What does a private investigator cost?

Private investigation isn’t just for blockbuster action movies. Hiring a private investigator can help in all kinds of situations ranging from finding a birth parent to improving personal security. Nationally, the average price range for private investigation is $70-$210, although pricing often hovers between $40 and $100 depending on the complexity of the services you need. Where you live in the country will affect your costs for private investigation; larger cities have higher business overhead and a higher cost of living, which in turn means higher service rates. The complexity of your case can also affect cost. A basic background check may have a flat rate, while hiring a private investigator to help with your child custody case may require more legwork and research, and therefore cost more. Some private investigators work on retainer. A retainer is essentially a nonrefundable deposit you pay to the professional — meaning you have retained their services — who then works against that amount. Here are some examples of average private investigation costs:

  • Hourly rate: $60-$70; costs can vary based on current fuel prices.
  • Flat rate: $100 for comprehensive background investigation services.
  • Retainer: $1,500 minimum retainer required by some pros before starting work.
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