NAICS 237990 · Other Heavy and Civil Engineering Construction

General engineering contractors in Ontario, CA

63 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
Listings 41–60How results are ordered
44

Tj's General Engineering Inc

Rancho Cucamonga, CA · (909) 354-7769

CA-CSLB 1056874 · A C12General engineering contractorExcavation, grading and paving
License activechecked Oct 24, 2026
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47

United One Engineering

Rancho Cucamonga, CA · (909) 229-9475

CA-CSLB 1077505 · A B +1General engineering contractorGeneral contractorElectrician
License activechecked Oct 24, 2026
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48

Westland Group Inc

Rancho Cucamonga, CA · (909) 403-5554

CA-CSLB 1152732 · AGeneral engineering contractor
License activechecked Oct 24, 2026
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50

1V Comunications

Jurupa Valley, CA · (626) 400-0449

CA-CSLB 1083683 · A C7General engineering contractorElectrician
License activechecked Oct 24, 2026
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51

395 Engineering

Jurupa Valley, CA · (951) 529-1204

CA-CSLB 1135682 · AGeneral engineering contractor
License activechecked Oct 24, 2026
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52

4 Com Incorporated

Riverside, CA · (951) 742-8006

CA-CSLB 925854 · AGeneral engineering contractor
License activechecked Oct 24, 2026
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55

A D Pipeline

Riverside, CA · (951) 352-3556

CA-CSLB 773161 · C34General engineering contractor
License activechecked Oct 24, 2026
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56

A J Contracting

Eastvale, CA · (714) 343-6836

CA-CSLB 965758 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
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58

A M E Roofing

Upland, CA · (909) 766-3200

CA-CSLB 1057266 · A B +5General engineering contractorGeneral contractorElectrician+2
License activechecked Oct 24, 2026
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