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 101–120How results are ordered
103

Acer Fire Protection Inc

Montclair, CA · (626) 224-7800

CA-CSLB 1047478 · A B +1General engineering contractorGeneral contractorFire sprinkler contractor
License activechecked Oct 24, 2026
CallDetails
104

Act 1 Construction Inc

Norco, CA · (951) 735-1184

CA-CSLB 657517 · A B +3General engineering contractorGeneral contractorConcrete contractor+2
License activechecked Oct 24, 2026
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106

Addison Equipment Rental

Fontana, CA · (909) 822-8282

CA-CSLB 431813 · A C12General engineering contractorExcavation, grading and paving
License activechecked Oct 24, 2026
CallDetails
108

Allen Cayir

Chino, CA · (909) 595-8599

CA-CSLB 646413 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
CallDetails
110

Allsup Corporation

Upland, CA · (909) 931-1636

CA-CSLB 394938 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
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113

Amj Inc

Chino, CA · (909) 342-0635

CA-CSLB 1077396 · A C34General engineering contractor
License activechecked Oct 24, 2026
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114

Ampco Contracting Inc

Corona, CA · (949) 955-2255

CA-CSLB 851752 · A ASB +3General engineering contractorAsbestos and hazardous materials abatementGeneral contractor+1
License activechecked Oct 24, 2026
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115

Ams Paving LLC

Fontana, CA · (909) 357-0711

CA-CSLB 415436 · A C12General engineering contractorExcavation, grading and paving
License activechecked Oct 24, 2026
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118

Aramexx Construction

Corona, CA · (909) 933-0327

CA-CSLB 960305 · A B +1General engineering contractorGeneral contractorLandscaper
License activechecked Oct 24, 2026
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120

Aten Construction Inc

Jurupa Valley, CA · (951) 522-0864

CA-CSLB 753114 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
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