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

Buccaneer Builders

Riverside, CA · (951) 640-8542

CA-CSLB 718006 · A B +3General engineering contractorGeneral contractorPlumber+1
License activechecked Oct 24, 2026
CallDetails
02

Buck John

Eastvale, CA · (909) 292-6998

CA-CSLB 981035 · A B +2General engineering contractorGeneral contractorSpecialty contractor
License activechecked Oct 24, 2026
CallDetails
07

C M Peich Inc

Chino, CA · (909) 597-6200

CA-CSLB 710757 · AGeneral engineering contractor
License activechecked Oct 24, 2026
CallDetails
08

C P C Inc

Upland, CA · (909) 981-1091

CA-CSLB 862027 · A C34General engineering contractor
License activechecked Oct 24, 2026
CallDetails
09

Cable Brothers Inc

Rancho Cucamonga, CA · (909) 899-6475

CA-CSLB 880335 · A C7General engineering contractorElectrician
License activechecked Oct 24, 2026
CallDetails
13

Cali State Paving Inc

Riverside, CA · (714) 757-8012

CA-CSLB 1015670 · A B +1General engineering contractorGeneral contractorExcavation, grading and paving
License activechecked Oct 24, 2026
CallDetails
15

California Rampworks

Upland, CA · (909) 949-1601

CA-CSLB 973748 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
CallDetails
16

California Skateparks

Upland, CA · (909) 949-1601

CA-CSLB 799795 · A B +1General engineering contractorGeneral contractorLandscaper
License activechecked Oct 24, 2026
CallDetails
17

California Skateparks

Upland, CA · (909) 949-1601

CA-CSLB 962150 · A B +1General engineering contractorGeneral contractorLandscaper
License activechecked Oct 24, 2026
CallDetails
19

Canon Coating Co

Norco, CA · (951) 735-4119

CA-CSLB 405188 · A C32General engineering contractorExcavation, grading and paving
License activechecked Oct 24, 2026
CallDetails
20

Caropino Jerry

Rancho Cucamonga, CA · (310) 491-4630

CA-CSLB 861303 · A B +1General engineering contractorGeneral contractorExcavation, grading and paving
License activechecked Oct 24, 2026
CallDetails