J F Ahern CO
Fire Protect System · Based in Fond Du Lac, WI · Licensed in Washington · License #JFAHEFA957DC
How confident can you be in J F Ahern CO?
Are they licensed, bonded, and insured?
Active license, $15,000 bond and $2,000,000 liability on file — checked against WA L&I records, updated daily.
Are they who they say they are?
Not yet verified — this listing hasn't been claimed. Own this business? Claim it free.
Do other pros stand behind them?
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Do they have jobs on record?
Not yet measured — performance data comes from real jobs, not reviews.
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License facts
J F Ahern CO has been registered with WA L&I since 2005, based in Fond Du Lac, WI. Current filings: $15,000 surety bond (continuous) and $2,000,000 liability coverage through Nov 1, 2026. A surety bond has been on file since 2005.
- License type
- CONSTRUCTION CONTRACTOR
- Effective date
- Feb 28, 2005
- Expiration date
- Mar 6, 2027
- UBI
- 602471354
- Business type
- Corporation
- Phone
- (920) 921-9020
- Location
- Fond Du Lac, WI 54936
Source: WA L&I contractor registration — checked Aug 15, 2026. Applies to every row above.
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Claim this free listingBond & insurance on file
| Bond firm | Amount | Effective | Expiration |
|---|---|---|---|
| Continental Cas Co | $15,000 | Jan 31, 2024 | Continuous — until canceled |
| Continental Cas Co | $6,000 | Jan 31, 2005 | Jan 31, 2024 |
| Insurance company | Amount | Agency | Effective | Expiration |
|---|---|---|---|---|
| Zurich American Ins Co | $2,000,000 | LOCKTON COMPANIES - CHICAGO | Nov 1, 2025 | Nov 1, 2026 |
What the bond and insurance requirements mean for homeowners
A $15,000 surety bond, filed with the Department of Labor & Industries, is a condition of registration for specialty contractors in Washington (general contractors file $30,000). This contractor's current filing shows a $15,000 bond.
The bond is a limited fund a homeowner (or subcontractor or supplier) can make a claim against, through the courts, if a registered contractor fails to meet its obligations on a job. Contractors must also keep general liability insurance on file — at least $50,000 in property damage and $200,000 in public liability coverage, or a $250,000 combined single limit — which covers damage the contractor causes, not workmanship disputes. The rows above are the bond and insurance filings L&I publishes for this registration; whether a specific filing applies to a specific project depends on its dates and terms.
Principals
| Name | Start date |
|---|---|
| Anthony J Ahern | Feb 28, 2005 |
| James R Jarvis | Feb 25, 2011 |
| Jace Thomas Hierlmeier | Feb 22, 2019 |
| Grant Emanuel Nadler | Feb 1, 2022 |
| Kristana Marie Laufenberg | Feb 22, 2019 |
| Shawn Michael Anhalt | Feb 22, 2019 |
| Adam J Wunderlin | Feb 22, 2019 |
| Krista Joyce Tahlman | Feb 22, 2019 |
| John E Ahern | Feb 28, 2005 |
| John E Ahern III | Feb 25, 2011 |
| Robert J Fisher | Feb 28, 2005 |
| Alan R Fox | Feb 28, 2005 |
| Kenneth L Collins | Feb 25, 2011 |
| Ryan J Bittner | Feb 25, 2011 |
| Timothy Michael Schneider | Jan 25, 2017 |
| Michelle C Colyar | Feb 28, 2005 |
| Ryan J Bittner | Feb 25, 2011 |
| Michael H Krueger | Feb 28, 2005 |
| Michael H Krueger | Feb 28, 2005 |
What is a Fire Protect System contractor licensed to do in Washington?
Fire protection system contractors install, modify, and service fire sprinkler and suppression systems. Typical work includes sprinkler piping and heads, system retrofits in existing buildings, and repairs flagged by system inspections. Washington requires a $15,000 surety bond and general liability insurance for this registration.
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Built from Washington State L&I public records, updated Aug 15, 2026. Subser doesn't do star ratings or reviews — just verified records.