Private Investigators in Los Altos, CA

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Blue Knight Global Services
(747) 226-3099

Serving the
Los Altos Area

OPEN 24 Hours

Outstanding company to work for! The staff is always professional. They always pay on time with no issues.

Associated Investigation LTD
(800) 720-8955

Serving the
Los Altos Area

OPEN 24 Hours

Associated Investigations set up surveillance on a house for me. Gil and Ashley went above and beyond to do the work within my very tight time…

Roman PI
(888) 309-0392

Serving the
Los Altos Area

OPEN 24 Hours

I hired Frank to locate someone that I had been trying for 5 months to find on my own. He located the person in an hour! I strongly recommend Roman…

Finnegan Investigative Services
(415) 898-6032

Serving the
Los Altos Area


The most professional in the business, as far as results-driven performance,All paperwork is protected Detailed status reports as needed for my…

Mansfield Lierly and Associates Credibility Assessment Professionals
(916) 710-1030

Serving the
Los Altos Area


Great job you have done for me. Thanks for your Services. Outstanding test and follow up report. I recommend others to find a more professional…

Immendorf & Co Investigations
(415) 776-7777
PO Box 407190
San Francisco, CA 94133

This is a trustworthy, experienced and professional investigation company. You won't be disappointed!!

Roger B Edstrom
(650) 776-7983
1532 Julie Ln
Los Altos, CA 94024
Harder & Associates
(650) 941-5441
146 Main St Ste 203
Los Altos, CA 94022
OPEN 24 Hours

From Business: Confidential And Reliable Investigative Services including Domestic Civil and Criminal Include domestic surveillance and stakeouts, child custody matters,…

Azcal Investigations
(408) 737-7988
150 Aries Way
Sunnyvale, CA 94086
Montijo Investigative Services
(408) 730-2223
118 E Fremont Ave
Sunnyvale, CA 94087
D-Tech Investigations
(408) 617-1800

Serving the
Los Altos Area

Attorneys Collectors & Investigators
(888) 258-5298

Serving the
Los Altos Area

OPEN 24 Hours

Dear Mr. Aguirre,My wife and I would like to thank you for resolving our long-standing difficult debtor issue. We were very pleased with the work…

Debt Collection Firm
(800) 731-7308

Serving the
Los Altos Area

OPEN 24 Hours

You guys are great we will definitely be using your services again! We really appreciate your hard work with our account!​

Prestige Investigations
(408) 227-1935
1190 S Bascom Ave Ste 213
San Jose, CA 95128
OPEN 24 Hours
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The best choice I've ever made in life. Nestor is the best investigator there is. He is more than a investigator. He is a retired cop with 30 years…

Haber Investigations
(408) 978-2325
1702L Meridian Ave Ste 333
San Jose, CA 95125
OPEN 24 Hours

From Business: Mr. Haber has over 30 years experience in civil and criminal investigations including extensive experience and training as a law enforcement officer. In addition…

Maycroft Investigation Agency
(650) 453-3570
801 American St
San Carlos, CA 94070

From Business: Our Private Investigative Agency is located in the heart of the Peninsula. Maycroft Investigative Agency, MIA, is a Licensed and Bonded Investigative Company…

R A Nosek Investigations
(650) 368-2716
Po Box 5111
Redwood City, CA 94063
Private Eyes
(650) 361-1907
234 Marshall St
Redwood City, CA 94063
Palma & Palma Investigations
(650) 367-9890
1227 Arguello St
Redwood City, CA 94063
McDiarmid RKC Inc
(408) 374-2610
14125 Capri Dr Ste 2
Los Gatos, CA 95032

I have dealt with many Investigative Firms through the years. Many attempt to give the impression that they are at the forefront of the industry. I…

Digital Investigations
(669) 200-3991
228 Hamilton Ave
Palo Alto, CA 94301
OPEN 24 Hours

From Business: If you are looking to conduct the most in-depth digital investigation possible, you’ve come to the right place. At Digital Investigations in Palo Alto, CA, our…

Security Special Services
(408) 906-9163
2905 Stender Way Ste 86A
Santa Clara, CA 95054
OPEN 24 Hours

From Business: Professional Armed & Unarmed Uniformed Officers / Clearly Marked Patrol Vehicles / Plain Clothes Security Agents.

Tony Vain Investigations
(650) 642-4273
640 Masonic Way Unit 1373
Belmont, CA 94002
OPEN 24 Hours

From Business: SAN FRANCISCO BAY AREAOakland, San Jose, Sacramento - CALIFORNIA STATEWIDE Tony Vain's Private Investigation Firm Specializes in all types of Civil and Criminal…

Tony Vain Investigations, Inc
(650) 642-4273
3705 Haven Ave
Menlo Park, CA 94025
OPEN 24 Hours
Federal Investigative Services Division
(650) 473-0191
345 Middlefield Rd
Menlo Park, CA 94025
Mw Investigative
(650) 419-6022
265 Roquena Dr
La Honda, CA 94020
Maycroft Investigation Agency
(650) 453-3570
630 Bair Island Rd
Redwood City, CA 94063
Nero & Associates Private Investigations
(800) 991-6125
2033 Gateway Pl Ste 500
San Jose, CA 95110
Atlas Investigations
(408) 392-9050
1735 N 1st St
San Jose, CA 95112
OPEN 24 Hours
Preferred Professional
(650) 592-6739
Po Box 636
San Carlos, CA 94070