Redline Mechanical
General · Black Diamond, WA · License #REDLIM*835MM
Redline Mechanical is one of 122 General contractors registered in Black Diamond, registered with WA L&I since 2017. Registered longer than roughly half of General contractors in Black Diamond. Current filings: $30,000 surety bond (continuous) and $1,000,000 liability coverage through Sep 16, 2027.
How confident can you be in Redline Mechanical?
Are they licensed, bonded, and insured?
Active license, $30,000 bond and $1,000,000 liability on file — checked against WA L&I records, updated daily.
Are they who they say they are?
Not yet verified — Redline Mechanical 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 Black Diamond.
Do they have jobs on record?
Not yet measured — Redline Mechanical hasn't run jobs through Subser. Performance data comes from real jobs, not reviews.
Subser doesn't do star ratings or reviews — just verified records. What do these mean?
License facts
- License type
- CONSTRUCTION CONTRACTOR
- Effective date
- Jul 14, 2017
- Expiration date
- Jul 15, 2027
- UBI
- 604125856
- Business type
- Limited Liability Company
- Phone
- (360) 886-5129
- Location
- Black Diamond, WA 98010
Source: WA L&I contractor registration — checked Sep 28, 2026. Applies to every row above.
Registration is current through Jul 2027.
Is this your business? Claim it free to verify ownership — takes about two minutes.
Claim this free listingBond & insurance on file
| Bond firm | Amount | Effective | Expiration |
|---|---|---|---|
| Philadelphia Indemnity Ins Co | $30,000 | Jul 12, 2024 | Continuous — until canceled |
| Philadelphia Indemnity Ins Co | $12,000 | Jul 12, 2020 | Jul 25, 2024 |
| Insurance company | Amount | Agency | Effective | Expiration |
|---|---|---|---|---|
| EMC Property & Casualty Compan | $1,000,000 | HUB INTERNATIONAL Bothell | Sep 16, 2023 | Sep 16, 2027 |
What the bond and insurance requirements mean for homeowners
A $30,000 surety bond, filed with the Department of Labor & Industries, is a condition of registration for every general contractor in Washington. This contractor's current filing shows a $30,000 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 |
|---|---|
| Nicole Lyn McMahan | Jul 14, 2017 |
What is a General contractor licensed to do in Washington?
A general contractor in Washington is registered with the Department of Labor & Industries to perform or oversee work in multiple building trades. General contractors can take on whole projects — remodels, additions, new construction — and can hire specialty subcontractors for individual trades. Washington requires a $30,000 surety bond and general liability insurance for this registration. Washington currently lists 122 General contractors registered in Black Diamond.
Looking for reviews of Redline Mechanical?
Subser doesn't have reviews or star ratings. This page shows Redline Mechanical's WA L&I record — registration status, bond and liability coverage, and principals on file — plus any endorsements from other licensed contractors.
Own Redline Mechanical? Claim the listing free. Worked with Redline Mechanical? Endorse them from your own listing.
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Browse the directory
Built from Washington State L&I public records, updated Sep 28, 2026. Subser doesn't do star ratings or reviews — just verified records.