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 1–20How results are ordered
01

Advtech Environmental Inc

Rowland Heights, CA · (626) 339-3234

CA-CSLB 774161 · A HAZGeneral engineering contractorAsbestos and hazardous materials abatement
License activechecked Oct 24, 2026
CallDetails
02

Ae Technic Inc

Glendora, CA · (213) 300-6051

CA-CSLB 906078 · A B +3General engineering contractorGeneral contractorElectrician+2
License activechecked Oct 24, 2026
CallDetails
04

Alaniz Associates Corp

Covina, CA · (714) 955-2493

CA-CSLB 980341 · A HAZGeneral engineering contractorAsbestos and hazardous materials abatement
License activechecked Oct 24, 2026
CallDetails
05

All American Abatement Inc

Yorba Linda, CA · (714) 282-0300

CA-CSLB 1132402 · A B +2General engineering contractorGeneral contractorSwimming pool contractor+1
License activechecked Oct 24, 2026
CallDetails
08

Allen Cayir

Chino, CA · (909) 595-8599

CA-CSLB 646413 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
CallDetails
12

Aloha Striping Inc

West Covina, CA · (626) 213-2998

CA-CSLB 1103490 · AGeneral engineering contractor
License activechecked Oct 24, 2026
CallDetails
15

American Cpl Inc

Yorba Linda, CA · (714) 300-8114

CA-CSLB 1124230 · C34 C36General engineering contractorPlumber
License activechecked Oct 24, 2026
CallDetails
17

American Infastructure

Covina, CA · (323) 271-4602

CA-CSLB 1030873 · A B +2General engineering contractorGeneral contractorElectrician+1
License activechecked Oct 24, 2026
CallDetails
20

Amj Inc

Chino, CA · (909) 342-0635

CA-CSLB 1077396 · A C34General engineering contractor
License activechecked Oct 24, 2026
CallDetails