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
02

Earthscapes

Ontario, CA · (949) 536-8258

CA-CSLB 1027517 · A C27General engineering contractorLandscaper
License activechecked Oct 24, 2026
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05

Foxtrot Construction

Ontario, CA · (310) 490-7737

CA-CSLB 1035680 · A B +3General engineering contractorGeneral contractorElectrician+2
License activechecked Oct 24, 2026
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07

Garcon Construction Inc

Ontario, CA · (909) 591-8601

CA-CSLB 913550 · A C8General engineering contractorConcrete contractor
License activechecked Oct 24, 2026
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09

Gregg Electric Inc

Ontario, CA · (909) 983-1794

CA-CSLB 201042 · A C10 +1General engineering contractorElectrician
License activechecked Oct 24, 2026
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10

Guerrero Elgin

Ontario, CA · (909) 816-1617

CA-CSLB 1113824 · AGeneral engineering contractor
License activechecked Oct 24, 2026
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11

Hhs Construction LLC

Ontario, CA · (303) 325-2697

CA-CSLB 818906 · A B +3General engineering contractorGeneral contractorElectrician
License activechecked Oct 24, 2026
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13

Inland Design Build

Ontario, CA · (909) 920-1144

CA-CSLB 1005429 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
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14

Jaber Mehdi

Ontario, CA · (909) 628-1999

CA-CSLB 1034053 · AGeneral engineering contractor
License activechecked Oct 24, 2026
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16

Jn Construction Inc

Ontario, CA · (323) 378-0109

CA-CSLB 1001396 · A B +4General engineering contractorGeneral contractorElectrician+2
License activechecked Oct 24, 2026
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