NAICS 237990 · Other Heavy and Civil Engineering Construction

General engineering contractors in Diamond Bar, CA

14 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 41–60How results are ordered
41

Sjd&B Inc

Walnut, CA · (909) 481-0001

CA-CSLB 1001950 · A B +3General engineering contractorGeneral contractorExcavation, grading and paving+2
License activechecked Oct 24, 2026
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48

Aea Engineering

Pomona, CA

CA-CSLB 1161295 · AGeneral engineering contractor
License activechecked Oct 24, 2026
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51

A B P Global Inc

Hacienda Heights, CA · (626) 922-2356

CA-CSLB 962586 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
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53

A J M Engineering

Brea, CA · (626) 926-0995

CA-CSLB 983482 · A HAZGeneral engineering contractorAsbestos and hazardous materials abatement
License activechecked Oct 24, 2026
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54

A L D C L a Inc

Covina, CA · (818) 446-6651

CA-CSLB 616269 · A C36 +2General engineering contractorPlumberSwimming pool contractor+1
License activechecked Oct 24, 2026
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56

Abc Resources

Ontario, CA

US-GSA-SAM DJ4ETFM6NEY5General engineering contractor
License activechecked Oct 23, 2026
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57

Abc Resources Inc

Ontario, CA · (909) 988-0390

CA-CSLB 538680 · A C12 +1General engineering contractorExcavation, grading and paving
License activechecked Oct 24, 2026
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58

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
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59

Acosta Pipeline Inc

Ontario, CA · (626) 383-2431

CA-CSLB 1064810 · A C36General engineering contractorPlumber
License activechecked Oct 24, 2026
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