▮ Crosstown Business
contracting businessc20 hvacLicensed since 2005

U S T Testing Services INC

1635 Challenge Dr, Concord, CA 94520 · map

What the public record says

  • Licensed since 2005 (21 years)
  • $25,000 contractor bond
  • Carries workers' compensation (has employees)
  • Classifications: A, B, C4, C12, C16, C20, C34, C36, C38, C42, C43, C60
  • Owned by a corporation

Licenses and permits

  • A General EngineeringCA Contractors State License Board · #866797 · since 2005
  • B General BuildingCA Contractors State License Board · #866797 · since 2005
  • C4 classificationCA Contractors State License Board · #866797 · since 2005
  • C12 classificationCA Contractors State License Board · #866797 · since 2005
  • C16 classificationCA Contractors State License Board · #866797 · since 2005
  • C-20 Warm-Air Heating, Ventilating and Air-ConditioningCA Contractors State License Board · #866797 · since 2005
  • C34 classificationCA Contractors State License Board · #866797 · since 2005
  • C-36 PlumbingCA Contractors State License Board · #866797 · since 2005
  • C38 classificationCA Contractors State License Board · #866797 · since 2005
  • C42 classificationCA Contractors State License Board · #866797 · since 2005
  • C43 classificationCA Contractors State License Board · #866797 · since 2005
  • C60 classificationCA Contractors State License Board · #866797 · since 2005
Estimated value
Fair
$576K – $1.4M

Based on the license record looking like a company-sized operation (workers' comp, several classifications or a larger bond); businesses like that typically bill around $2,200,000 a year. At a typical 16% owner margin and 2.83x multiple for contractors.

Estimate, not an appraisal. How we value

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Nearby hvac, plumbing & electrical

Record built from 1 public file. Updated 11/7/2026. Own this business? Claim the page or ask for a change.