NAICS 237990 · Other Heavy and Civil Engineering Construction

General engineering contractors in Sonoma, CA

21 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
835 listingsHow results are ordered
24

New Garden Mechanics

Napa, CA · (707) 257-7182

CA-CSLB 738864 · A C27General engineering contractorLandscaper
License activechecked Oct 24, 2026
CallDetails
25

Ongaro & Sons

Petaluma, CA · (707) 579-3511

CA-CSLB 215233 · C4 C10 +9PlumberElectricianFire sprinkler contractor+2
License activechecked Oct 24, 2026
CallDetails
27

Paul Michael Company Inc

Petaluma, CA · (707) 769-1006

CA-CSLB 386001 · A C12 +2General engineering contractorExcavation, grading and paving
License activechecked Oct 24, 2026
CallDetails
33

Syar James M

Napa, CA · (707) 383-7195

CA-CSLB 325241 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
CallDetails
36

Utility & Site Inc

Napa, CA · (707) 287-1184

CA-CSLB 570401 · A C7General engineering contractorElectrician
License activechecked Oct 24, 2026
CallDetails
37

West Biofuels LLC

Petaluma, CA · (530) 209-5996

CA-CSLB 1065322 · AGeneral engineering contractor
License activechecked Oct 24, 2026
CallDetails
39

William James Gargan

Petaluma, CA · (707) 291-2782

CA-CSLB 351395 · A BGeneral engineering contractorGeneral contractor
License activechecked Oct 24, 2026
CallDetails