Diversified Mech Services INC
Heating/Vent/Air-Conditioning and Refrig (HVAC/R) · Kelso, WA · License #DIVERMS955J8
Registration expired per WA L&I as of Apr 28, 2023.
Diversified Mech Services INC is one of 3 Heating/Vent/Air-Conditioning and Refrig (HVAC/R) contractors registered in Kelso, registered with WA L&I since 2005. Principals on record since 2005.
How confident can you be in Diversified Mech Services INC?
Are they licensed, bonded, and insured?
Registration expired per WA L&I as of Apr 28, 2023.
Are they who they say they are?
Not yet verified — Diversified Mech Services INC hasn't claimed this listing. Own this business? Claim it free.
Do other pros stand behind them?
No endorsements yet from other licensed contractors in Kelso.
Do they have jobs on record?
Not yet measured — Diversified Mech Services INC hasn't run jobs through Subser. Performance data comes from real jobs, not reviews.
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License facts
- License type
- CONSTRUCTION CONTRACTOR
- Effective date
- Apr 28, 2005
- Expiration date
- Apr 28, 2023
- Suspend date
- Jun 3, 2022
- UBI
- 602213542
- Business type
- Corporation
- Phone
- (360) 577-6604
- Location
- Kelso, WA 98626
Source: WA L&I contractor registration — checked Sep 27, 2026. Applies to every row above.
Registration lapsed Apr 2023 per WA L&I records.
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Claim this free listingBond & insurance on file
What the bond and insurance requirements mean for homeowners
Washington requires specialty contractors to file a $15,000 surety bond with the Department of Labor & Industries as a condition of registration ($30,000 for general contractors).
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 |
|---|---|
| Carl Adolph Hendrickson | Apr 28, 2005 |
| Jane Divine Hendrickson | Apr 6, 2015 |
| Carl Adolph Hendrickson | Apr 28, 2005 |
| Kenneth Hendrickson | Apr 28, 2005 |
What is a Heating/Vent/Air-Conditioning and Refrig (HVAC/R) contractor licensed to do in Washington?
An HVAC/R specialty contractor is registered with WA L&I to install and service heating, ventilation, air-conditioning, and refrigeration systems. Electrical and mechanical work within HVAC systems may also require trade licenses administered separately by the state. The registration requires a $15,000 surety bond and general liability insurance on file with WA L&I. Washington currently lists 3 Heating/Vent/Air-Conditioning and Refrig (HVAC/R) contractors registered in Kelso.
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Subser doesn't have reviews or star ratings. This page shows Diversified Mech Services INC's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.
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Built from Washington State L&I public records, updated Sep 27, 2026. Subser doesn't do star ratings or reviews — just verified records.