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Areas Served Across Texas

Armstrong Investigations, PLLC proudly serves the entire Dallas–Fort Worth Metroplex and the surrounding North Texas region. Our knowledge of local communities, courts, and geography allows us to move quickly and discreetly wherever a case takes us.
Areas We serve

Comprehensive Coverage in the DFW Metroplex

Jasen A. Armstrong, J.D. didn’t come to investigations through a law enforcement background or a security contract. He came through the law—and that distinction shapes everything about how this firm operates.

With a Juris Doctor and years of experience navigating the rules of evidence, civil procedure, and litigation strategy, Jasen founded Armstrong Investigations, PLLC to fill a gap that practicing attorneys know well: most investigators collect facts. Very few understand how to collect them in a way that will actually hold up.

At Armstrong Investigations, that gap doesn’t exist. Every case plan begins with the end in mind—whether that end is a courtroom, a deposition, a negotiation table, or a custody hearing.

A professional investigator in a vehicle using a digital tablet to navigate a map of the DFW area, representing discreet and legal surveillance services in North Texas.
An expansive aerial view of the Dallas and Fort Worth skylines at sunset, representing the wide service area of Armstrong Investigations across the DFW Metroplex.
Areas We serve

The North Texas Golden Corridor

We are especially active in the fast-growing communities of Collin County, including Plano, Frisco, McKinney, and Richardson, as well as Denton County. This corridor’s blend of corporate headquarters and affluent residential neighborhoods makes it a frequent setting for both our corporate and family-law work.
A professional investigator conducting discreet surveillance from a vehicle in a modern North Texas business district, symbolizing the firm's expert surveillance services in areas like Plano and Frisco.
Areas We serve

Expanding Reach

Beyond the core counties, we regularly serve clients in Rockwall, Ellis, Kaufman, and Johnson counties. Wherever your matter leads within the greater North Texas area, we have the local familiarity to handle it effectively.

Specialized Investigations

Our regional coverage supports our specialties. We conduct Texas family-law investigations, including custody, divorce, and child-safety matters, and we provide corporate and legal support services to businesses and attorneys throughout the area. Each engagement benefits from our understanding of the local courts and communities involved.

Statewide and Beyond

While the Metroplex is our home, our reach is not limited to it. For established clients and qualifying matters, we coordinate investigations statewide and, when necessary, beyond Texas through our professional network. If your case crosses county or state lines, we have the resources to follow it.
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Your Facts Deserve An Investigation Built To Hold Up

Whether you’re a litigator building a case, a family facing an impossible situation, or a business protecting its interests—Armstrong Investigations delivers intelligence that matters where it counts.
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