★★★★★ 5.0 · 273 Google reviewsWalk-ins welcome · Mon–Fri 9–5
SIX DECADES · COURT STREET · INDEPENDENT

Serving Seguin since nineteen sixty-five.

60YEARS · 1965–2026

Kermit Westerholm founded the agency in 1965 on Hwy 123. His daughter Mary and son-in-law Kerry bought it from him in 1990 and renamed it Westerholm-Koehler. In 1998, the office moved to 533 E. Court Street — just in time for the flood. The person answering the phone hasn't changed since.

Kermit Westerholm opened the doors in 1965, selling life insurance to the Seguin community out of an office on Hwy 123. Solo. One desk. Independent by design — writing across multiple carriers rather than tying the agency to a single insurance company. That decision, made sixty years ago in a one-man office, still defines how WKI operates.

For more than twenty years, Kermit built the agency the slow way — word of mouth, showing up, answering the phone. His daughter Mary grew up watching it happen, then worked alongside him through high school and college. In 1988, Kerry Koehler started his own insurance career at an independent agency, selling life, home, and auto.

In 1990, Kerry and Mary purchased the agency from Kermit and renamed it Westerholm-Koehler Insurance Agency. Kermit didn't hang it up right away — he stayed on for years to help his daughter and son-in-law learn the work from the founder's side of the desk. The handoff happened the slow way, on purpose.

The carriers stayed. The phone number stayed. The promise to answer when it rang stayed. The agency that opened as a one-man shop in 1965 became a family operation — and it still is, thirty-six years later.

In 1998, WKI bought an old home at 533 E. Court Street and converted it into the agency's permanent office. The same year, the historic Seguin and Guadalupe County flood hit. Houses were lost. Claim files stacked up on the new desks before the paint was fully dry.

The team worked flood claims out of the new Court Street office while customers worked through losing homes. It's the moment most current customers point to when they explain why they've stayed: the agency that helps you in the worst year is the one you keep your business with for the next thirty.

The office is the same one we're sitting in today.

Timeline

Sixty years, in eleven moments.

  1. 1965

    Founded on Hwy 123.

    Kermit Westerholm opens the agency selling life insurance to the Seguin community. Independent from day one.

  2. 1988

    Kerry starts in the business.

    Kerry Koehler begins his insurance career at an independent agency, selling life, home, and auto. Mary Westerholm Koehler — Kermit's daughter — has been working the office since high school and college.

  3. 1990

    Koehler joins the name.

    Kerry and Mary purchase the agency from Kermit and rename it Westerholm-Koehler. Kermit stays on for years to help. The name on the door changes; the family behind it doesn't.

  4. 1998

    The Court Street move — and the flood.

    WKI buys the old home at 533 E. Court Street and converts it into the agency. The same year, the historic Seguin / Guadalupe County flood hits. The team works flood claims out of the new office while customers lose homes.

  5. 2003

    Syndee joins.

    Two decades and counting on the WKI roster.

  6. 2006

    Charron joins.

    Front office. The voice you hear first when you call.

  7. 2009

    Angela joins.

    Customer service backbone. The voice on the phone for over fifteen years.

  8. 2017

    Bryan joins.

    Commercial lines lead. Sole-prop contractors to fifty-employee shops.

  9. 2020

    Aubrey joins.

    Service team — the next generation of Seguin neighbors on the WKI roster.

  10. 2025

    Kirsten joins.

    Newest agent. Seven-person team complete.

  11. 2026

    Best of the Best.

    Voted #1 Insurance Agency by Seguin neighbors. Sixty years on the door.

Stayed the same

The street, the independence, the promise.

  • →The street address — 533 E. Court Street, since 1998
  • →The independence — thirty-plus carriers, never captive
  • →The phone number
  • →The promise to answer it when it rings
What's changed

The carriers grew. The tech improved. The family stayed.

  • →The carrier panel grew to thirty-plus
  • →The Saltinsure online quote workflow pulls preliminary numbers in minutes
  • →Online tools replaced some of the paperwork
  • →The chair on the other side of the desk is still in the family
One Seguin story
In 1998, the flood hit Seguin and Guadalupe County. We had just moved into the Court Street office. We worked flood claims for our customers from the new desks — houses lost, lives interrupted. That's how we got to know a lot of them.
— Kerry Koehler

Sixty years on. Seven-person team. Thirty-plus carriers across personal, commercial, farm and ranch, life, and supplemental health. #1 Best of the Best Seguin 2026. Customers' kids still walking through the door for their first auto policy.

That's the story. The short version is: we kept showing up.

Sixty years of showing up. Still are.

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533 E. Court Street · Seguin, TX · Walk-ins welcome Mon–Fri 9–5