D & D Mechanical INC

HVAC/RFRG · Based in Portland, OR · Licensed in Washington · License #DDMECDM883O7

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  • State-verified Checked against WA L&I records, updated daily.
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License facts

D & D Mechanical INC has been registered with WA L&I since 2012, based in Portland, OR. Current filings: $4,000 surety bond (continuous). Principals on record since 2012.

License type
ELECTRICAL CONTRACTOR
Effective date
Sep 27, 2012
Expiration date
Nov 5, 2026
UBI
602520152
Business type
Corporation
Phone
(360) 518-8765
Location
Portland, OR 97238

Source: WA L&I contractor registration — verified Aug 14, 2026. Applies to every row above.

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Bond & insurance on file

Bond firmAmountEffectiveExpiration
Contractors Bonding & Insurance Co$4,000Sep 26, 2012Continuous — until canceled
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). This contractor's current filing shows a $4,000 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

NameStart date
Boyan DilgardeOct 16, 2020
Dorisl DilgardeSep 27, 2012
Boyanl DilgardeSep 27, 2012
Donovan DaleSep 27, 2012
What is a HVAC/RFRG contractor licensed to do in Washington?

An HVAC/RFRG registration covers heating, ventilation, air-conditioning, and refrigeration work under the specialty classification WA L&I assigns to this code. Related mechanical and electrical work may require separate state trade licenses. The registration requires a $15,000 surety bond and general liability insurance on file with WA L&I.

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Built from Washington State L&I public records, updated Aug 14, 2026. No star ratings or reviews — verification only.