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

Abc Resources

Ontario, CA

US-GSA-SAM DJ4ETFM6NEY5General engineering contractor
License activechecked Oct 23, 2026
Details
02

Abc Resources Inc

Ontario, CA · (909) 988-0390

CA-CSLB 538680 · A C12 +1General engineering contractorExcavation, grading and paving
License activechecked Oct 19, 2026
CallDetails
03

Ace Engineering Inc

Ontario, CA · (909) 392-4600

CA-CSLB 613320 · A ASB +2General engineering contractorAsbestos and hazardous materials abatementGeneral contractor+1
License activechecked Oct 19, 2026
CallDetails
04

Acosta Pipeline Inc

Ontario, CA · (626) 383-2431

CA-CSLB 1064810 · A C36General engineering contractorPlumber
License activechecked Oct 19, 2026
CallDetails
06

Allwayss

Ontario, CA · (909) 732-3544

CA-CSLB 1088428 · AGeneral engineering contractor
License activechecked Oct 19, 2026
CallDetails
07

Anton Construction

Ontario, CA · (909) 717-8726

CA-CSLB 461541 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 19, 2026
CallDetails
08

Arijet Corporation

Ontario, CA · (817) 228-9059

CA-CSLB 916562 · A C7General engineering contractorElectrician
License activechecked Oct 19, 2026
CallDetails
10

C P Construction Co Inc

Ontario, CA · (909) 981-1091

CA-CSLB 304795 · A C12 +2General engineering contractorExcavation, grading and paving
License activechecked Oct 19, 2026
CallDetails
17

Constru One Inc

Ontario, CA · (909) 680-2418

CA-CSLB 972427 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 19, 2026
CallDetails
19

Delta Group Inc

Ontario, CA · (626) 695-6125

CA-CSLB 1107352 · AGeneral engineering contractor
License activechecked Oct 19, 2026
CallDetails
20

Doja Inc

Ontario, CA · (909) 628-1999

CA-CSLB 597764 · A B +3General engineering contractorGeneral contractorExcavation, grading and paving+1
License activechecked Oct 19, 2026
CallDetails