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 1–20How results are ordered
01

Chavez Mario

Chino Hills, CA · (909) 841-8831

CA-CSLB 1063281 · A B +1General engineering contractorGeneral contractorElectrician
License activechecked Oct 24, 2026
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02

Chen Pang Chiu

Montclair, CA · (626) 224-7800

CA-CSLB 514113 · A B +1General engineering contractorGeneral contractorFire sprinkler contractor
License activechecked Oct 24, 2026
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03

Coach Construction

Rancho Cucamonga, CA · (909) 749-5681

CA-CSLB 784946 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
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06

Condor Electric Co

Upland, CA · (951) 206-1522

CA-CSLB 421153 · A C10General engineering contractorElectrician
License activechecked Oct 24, 2026
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07

Construction West Inc

Rancho Cucamonga, CA · (909) 322-5437

CA-CSLB 860477 · A B +1General engineering contractorGeneral contractorTile contractor
License activechecked Oct 24, 2026
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08

Continental Plumbing Inc

Mira Loma, CA · (951) 360-8300

CA-CSLB 399073 · C4 C16 +3PlumberFire sprinkler contractorGeneral engineering contractor+1
License activechecked Oct 24, 2026
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09

Core & Main LP

Corona, CA · (909) 574-8662

CA-CSLB 1097128 · AGeneral engineering contractor
License activechecked Oct 24, 2026
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11

Corona Constructors

Corona, CA · (951) 340-1286

CA-CSLB 513884 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
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12

Criterion Industrial

Jurupa Valley, CA · (951) 683-2400

CA-CSLB 899657 · A C10General engineering contractorElectrician
License activechecked Oct 24, 2026
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17

Cut N Dry Restoration

Rancho Cucamonga, CA · (909) 987-9861

CA-CSLB 1013757 · A ASB +4General engineering contractorAsbestos and hazardous materials abatementGeneral contractor+2
License activechecked Oct 24, 2026
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19

D C Drilling Inc

Jurupa Valley, CA · (951) 368-7789

CA-CSLB 995044 · D09General engineering contractor
License activechecked Oct 24, 2026
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20

Daneshmayeh David Reza

Riverside, CA · (951) 202-7345

CA-CSLB 880669 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
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