contracting businessc20 hvacLicensed since 1988
Dias Robert L
Robert L Dias DBA Rd's Service Contractor
4406 Willow Glen Ct, Concord, CA 94521 · map
What the public record says
- Licensed since 1988 (38 years)
- $25,000 contractor bond
- Carries workers' compensation (has employees)
- Classifications: C20, C29, C36
- Sole proprietor
Licenses and permits
- C-20 Warm-Air Heating, Ventilating and Air-ConditioningCA Contractors State License Board · #523223 · since 1988
- C29 classificationCA Contractors State License Board · #523223 · since 1988
- C-36 PlumbingCA Contractors State License Board · #523223 · since 1988
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
Tighten this with your numbersNearby hvac, plumbing & electrical
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- Oleksii KoziurenkoConcord · since 2026 · $236K–$579K
- Ground Level Construction INCConcord · since 2014 · $576K–$1.4M
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- 99 North Construction & Plumbing INCConcord · since 2018 · $217K–$534K
Record built from 1 public file. Updated 11/7/2026. Own this business? Claim the page or ask for a change.
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
Tighten this with your numbers