NAICS 237990 · Other Heavy and Civil Engineering Construction

General engineering contractors in Castro Valley, CA

17 licensed general engineering contractors · every license checked against the issuer's file

More cities in California

Bakersfield 337San Francisco 307San Diego 273Sacramento 244Los Angeles 235Riverside 191San Jose 188Fresno 184Irvine 140Santa Rosa 134Corona 122Redding 119El Cajon 117Anaheim 116Oakland 111Temecula 110
1,880 listingsHow results are ordered
47

Phantom Builders

Hayward, CA · (510) 935-2185

CA-CSLB 1115211 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
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49

Precisionworks LLC

Oakland, CA

US-GSA-SAM FSN9E21WBBH9General engineering contractor
License activechecked Oct 23, 2026
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50

Prism Engineering Inc

Hayward, CA · (408) 426-0279

CA-CSLB 769171 · A B +2General engineering contractorGeneral contractorElectrician+1
License activechecked Oct 24, 2026
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51

Process Engineers Inc

Oakland, CA · (510) 782-5122

CA-CSLB 439438 · A D21General engineering contractorSpecialty contractor
License activechecked Oct 24, 2026
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54

R & B Equipment Inc

Hayward, CA · (510) 782-3774

CA-CSLB 669008 · A ASB +2General engineering contractorAsbestos and hazardous materials abatementExcavation, grading and paving
License activechecked Oct 24, 2026
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55

R F Macdonald Co LLC

Hayward, CA · (650) 529-3060

CA-CSLB 220117 · A C4General engineering contractorPlumber
License activechecked Oct 24, 2026
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56

R J S & Associates Inc

Hayward, CA · (510) 670-9111

CA-CSLB 704787 · A B +2General engineering contractorGeneral contractorConcrete contractor+1
License activechecked Oct 24, 2026
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57

R&S Paving Inc

Hayward, CA · (510) 708-7444

CA-CSLB 1086495 · C12 C31Excavation, grading and pavingGeneral engineering contractor
License activechecked Oct 24, 2026
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58

Radman Electric

Hayward, CA · (510) 755-8369

CA-CSLB 1021116 · A C10General engineering contractorElectrician
License activechecked Oct 24, 2026
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