NAICS 237990 · Other Heavy and Civil Engineering Construction
General engineering contractors in Montclair, CA
12 licensed general engineering contractors · every license checked against the issuer's file
More cities in California
41Glendora, CA · (626) 330-0023
CA-CSLB 674641 · AGeneral engineering contractor
License activechecked Oct 24, 2026
42Ontario, CA · (909) 732-3544
CA-CSLB 1088428 · AGeneral engineering contractor
License activechecked Oct 24, 2026
43Covina, CA · (323) 271-4602
CA-CSLB 1030873 · A B +2General engineering contractorGeneral contractorElectrician+1
License activechecked Oct 24, 2026
44Ontario, CA · (909) 717-8726
CA-CSLB 461541 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
45Rancho Cucamonga, CA · (909) 969-0182
CA-CSLB 1031638 · A C12General engineering contractorExcavation, grading and paving
License activechecked Oct 24, 2026
46Diamond Bar, CA · (909) 538-9188
CA-CSLB 969881 · A B +3General engineering contractorGeneral contractorElectrician+2
License activechecked Oct 24, 2026
47Rancho Cucamonga, CA · (909) 527-3820
CA-CSLB 968356 · A B +5General engineering contractorGeneral contractorConcrete contractor+2
License activechecked Oct 24, 2026
48San Dimas, CA · (951) 830-9703
CA-CSLB 1059093 · AGeneral engineering contractor
License activechecked Oct 24, 2026
49Rancho Cucamonga, CA · (909) 980-2024
CA-CSLB 318457 · A C10General engineering contractorElectrician
License activechecked Oct 24, 2026
50Rancho Cucamonga, CA
US-GSA-SAM DEQAT9QTCCS5General engineering contractor
License activechecked Oct 23, 2026
51Rancho Cucamonga, CA · (909) 921-6314
CA-CSLB 675005 · A C10General engineering contractorElectrician
License activechecked Oct 24, 2026
52Rancho Cucamonga, CA · (909) 563-8242
CA-CSLB 987495 · A C12 +1General engineering contractorExcavation, grading and pavingConcrete contractor
License activechecked Oct 24, 2026
53Rancho Cucamonga, CA · (626) 826-2120
CA-CSLB 1159944 · AGeneral engineering contractor
License activechecked Oct 24, 2026
54Rancho Cucamonga, CA · (909) 244-0630
CA-CSLB 1067751 · AGeneral engineering contractor
License activechecked Oct 24, 2026
55San Dimas, CA · (626) 828-9128
CA-CSLB 1127513 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
56Chino, CA · (562) 755-7752
CA-CSLB 972690 · AGeneral engineering contractor
License activechecked Oct 24, 2026
57Rancho Cucamonga, CA · (909) 732-3132
CA-CSLB 490869 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
58Glendora, CA · (909) 305-4700
CA-CSLB 920654 · A C10General engineering contractorElectrician
License activechecked Oct 24, 2026
59Alta Loma, CA · (909) 944-3517
CA-CSLB 421278 · A B +2General engineering contractorGeneral contractorExcavation, grading and paving+1
License activechecked Oct 24, 2026
60Alta Loma, CA · (909) 944-3517
CA-CSLB 718466 · A ASB +6General engineering contractorAsbestos and hazardous materials abatementGeneral contractor+2
License activechecked Oct 24, 2026