Frontier-kemper Constructors Inc

Report card

• Licence activeCSLB #441679, class A, C10. Issued 22 Jun 1983, expires 30 Jun 2027.
• Licensed 43 yrsSince 22 Jun 1983.
• Bonded$25,000 with Travelers Casualty and Surety Company, since 1 Jan 2023. California requires the same $25,000 bond of every contractor.
• Workers' comp insuredAmerican Zurich Insurance Company, policy WC654236517, valid to 31 May 2027.
• Clean CSLB recordNo citations, complaints or legal actions disclosed.CSLB record

Checked against the Contractors State License Board (CSLB) register on 3 Nov 2026.

About Frontier-kemper Constructors Inc

Frontier-Kemper Constructors Inc. provides underground and heavy civil construction services, including tunneling and mine development, with locations in California, Indiana, New York, and British Columbia.

People on the licence

Walter David Rogstad (qualifier, CEO and president), Stephen Charles Redmond (officer), Jason Allen Gardner (qualifier)

From Frontier-kemper Constructors Inc's own website, read 3 Nov 2026. We only show what the site states.

OSHA inspections

• 1 Aug 2023 · Planned1 violation, $280 penalty · case
• 25 May 2022 · Planned1 violation · case
• 9 Feb 2022 · Planned0 violations · case
• 13 Apr 2021 · Planned0 violations · case
• 18 Nov 2020 · Planned1 violation, $315 penalty · case
• 6 Aug 2019 · Planned0 violations · case
• 15 Dec 2016 · Planned2 violations, $750 penalty · case
• 21 Sep 2016 · Planned0 violations · case

US Department of Labor enforcement data, matched by business name and city.

Why it ranks #462 of 2,713 electricians in Los Angeles

Score 65 / 100. Claiming this listing or using Theo never changes it. How we rank