J.i.s Private Investigations
- Investigative
- The Future
- PI
24 agencies listed · 17 in San Antonio · 10 open 24/7 · 16 open weekends · 19 rated 4.5+
Data verified October 21, 2026
The 24 agencies on this page are the private investigators listed for San Antonio, TX. What each one states about its license, its specialties and the areas it covers comes from its own website; ratings and quotes come from public reviews.

17 of the 24 agencies we list are based in San Antonio; the other 7 serve San Antonio from towns including San Marcos (45 mi), Selma (14 mi) and Universal City (14 mi). 20 of the agencies on this page have a rating, from 3.9 to 5.0 across 492 reviews; 4 have 50 or more reviews and 19 are rated 4.5 or higher. The topics that come up most in reviews of the agencies on this page are "communication" and "results". 10 are open around the clock; 16 are open on Saturdays and 13 on Sundays. 16 show a license on their websites and 5 have a BBB rating of A or A+. 13 have ten or more years of experience, the longest 33 years. 10 offer urgent consultations; 8 offer a free initial consultation; 2 are family- or locally-owned and 1 lists coupons or special offers. 1 has Spanish-speaking staff. We have a website on file for all 24 of the agencies on this page; 20 publish a contact page and 15 list a public email. We count these figures across the agencies on this page; distances are straight-line, and hours and prices change, so confirm the details with the agency before you book.
All 24 agencies on this page have a website on file. Those pages are where an agency states its license, the kinds of investigation it takes on, and whether it works mainly for attorneys, for companies or for private clients. That last point changes how a report gets written.