21Richter Construction IncorporatedOroville, CA · (530) 533-3918CA-CSLB 396223 · A B +1General engineering contractorGeneral contractorExcavation, grading and pavingLicense activechecked Oct 24, 2026CallDetails
22Sherwood Duke Contracting IncOroville, CA · (530) 846-2710CA-CSLB 327827 · AGeneral engineering contractorLicense activechecked Oct 24, 2026CallDetails
23Shimmick/Rci JVOroville, CA · (530) 533-3918CA-CSLB 1153453 · AGeneral engineering contractorLicense activechecked Oct 24, 2026CallDetails
24Specialized ShapingDurham, CA · (530) 521-0829CA-CSLB 705386 · AGeneral engineering contractorLicense activechecked Oct 24, 2026CallDetails
25Steel-Crete IncDurham, CA · (530) 399-0032CA-CSLB 803951 · A C8 +2General engineering contractorConcrete contractorSteel and welding contractorLicense activechecked Oct 24, 2026CallDetails
26Walt's Backhoe ServiceLive Oak, CA · (530) 695-2018CA-CSLB 545119 · AGeneral engineering contractorLicense activechecked Oct 24, 2026CallDetails
27Western Site DevelopmentYankee Hill, CA · (530) 282-2384CA-CSLB 558934 · AGeneral engineering contractorLicense activechecked Oct 24, 2026CallDetails
28Cto Excavation LLCLive Oak, CAUS-GSA-SAM NDGWELKEUSP1General engineering contractorLicense activechecked Oct 23, 2026Details
29Cto Industries IncLive Oak, CAUS-GSA-SAM LDUKRUXFS213General engineering contractorLicense activechecked Oct 23, 2026Details
30Cto Pacific EnergyLive Oak, CAUS-GSA-SAM LFN4EH5XY2K5General engineering contractorLicense activechecked Oct 23, 2026Details
31Western Summit EngineeringLive Oak, CAUS-GSA-SAM KNTEPJ6CA9G1General engineering contractorLicense activechecked Oct 23, 2026Details
32A a a EngineeringMarysville, CA · (505) 238-7802CA-CSLB 887687 · AGeneral engineering contractorLicense activechecked Oct 24, 2026CallDetails
33A B S Builders IncColusa, CA · (530) 458-2299CA-CSLB 1005975 · A B +1General engineering contractorGeneral contractorConcrete contractorLicense activechecked Oct 24, 2026CallDetails
34A & F Site Solutions and ExcavationSutter, CA · (530) 682-4723CA-CSLB 1142634 · AGeneral engineering contractorLicense activechecked Oct 24, 2026CallDetails
35Aeternum PipelineYuba City, CA · (530) 888-4850CA-CSLB 1121774 · C12 C34Excavation, grading and pavingGeneral engineering contractorLicense activechecked Oct 24, 2026CallDetails
36All-American Construction IncSutter, CA · (530) 617-5111CA-CSLB 948762 · A BGeneral engineering contractorGeneral contractorLicense activechecked Oct 24, 2026CallDetails
37American EngineeringChico, CA · (530) 682-7679CA-CSLB 1137673 · AGeneral engineering contractorLicense activechecked Oct 24, 2026CallDetails
38Apex ElectricalOroville, CA · (530) 871-0723CA-CSLB 1073483 · A C10 +2General engineering contractorElectricianTree service+1License activechecked Oct 24, 2026CallDetails
39Apex Environmental and Engineering IncSutter, CA · (530) 682-3357CA-CSLB 1107055 · AGeneral engineering contractorLicense activechecked Oct 24, 2026CallDetails
40Apex Federal Engineering IncSutter, CA · (530) 682-3357CA-CSLB 1128164 · AGeneral engineering contractorLicense activechecked Oct 24, 2026CallDetails