Licensed General Engineering (A) contractors in California

The California Contractors State License Board (CSLB) lists 15,127 California contractors classified A (General Engineering (A)). Each entry below links to a full dossier with license status, insurance, bond, and enforcement — as of October 14, 2026.

Showing 9,541–9,600 of 15,127 contractors

1. Oacys Engineering

   Porterville, CA · CSLB #1033846 · as of October 14, 2026
   Active · clear
2. Oakhill Construction INC

   Calabasas, CA · CSLB #1013979 · as of October 14, 2026
   Active · clear
3. Oak Hills Underground INC

   Oak Hills, CA · CSLB #882975 · as of October 14, 2026
   Active · clear
4. Oakland Bay Ventures

   Youngstown, CA · CSLB #1144230 · as of October 14, 2026
   Active · clear
5. Oakleaf General Engineering Construction

   Bakersfield, CA · CSLB #1053862 · as of October 14, 2026
   Active · clear
6. Oakley General Engineering

   Placerville, CA · CSLB #1124352 · as of October 14, 2026
   Active · clear
7. Oakmount Concrete

   Pittsburg, CA · CSLB #991529 · as of October 14, 2026
   Active · clear
8. Oakridge Construction & Energy

   Yucaipa, CA · CSLB #975448 · as of October 14, 2026
   Active · clear
9. Oakridge Landscape INC

   Valencia, CA · CSLB #798565 · as of October 14, 2026
   Active · clear
10. Oak Street Management INC

    Orinda, CA · CSLB #1074417 · as of October 14, 2026
    Active · clear
11. Oak Tree Construction INC

    Malibu, CA · CSLB #518650 · as of October 14, 2026
    Active · clear
12. Oak Valley Excavating INC

    Oakdale, CA · CSLB #863622 · as of October 14, 2026
    Active · clear
13. Oakville Pump Service INC

    Napa, CA · CSLB #744958 · as of October 14, 2026
    Active · clear
14. Oakwest Services INC

    Anaheim, CA · CSLB #989015 · as of October 14, 2026
    Active · clear
15. Oasis Structures And Water Works

    Mc Kinleyville, CA · CSLB #648692 · as of October 14, 2026
    Active · clear
16. Obayashi Corporation

    Foster City, CA · CSLB #346881 · as of October 14, 2026
    Active · clear
17. Obayashi - Drill Tech Joint Venture

    Foster City, CA · CSLB #1132057 · as of October 14, 2026
    Active · clear
18. Obayashi/ Smci Joint Venture

    Foster City, CA · CSLB #1057502 · as of October 14, 2026
    Active · clear
19. O B Construction Builders A1 INC

    Palmdale, CA · CSLB #237811 · as of October 14, 2026
    Active · clear
20. Ob Construction & Engineering Corp

    National City, CA · CSLB #1114983 · as of October 14, 2026
    Active · clear
21. Obrien Brothers INC

    San Bernardino, CA · CSLB #1074479 · as of October 14, 2026
    Active · clear
22. Michael L O'brien

    Frazier Park, CA · CSLB #535774 · as of October 14, 2026
    Active · clear
23. Tim O'brien Tractor Work

    Fallbrook, CA · CSLB #882100 · as of October 14, 2026
    Active · clear
24. Oc3 Construction & Consulting INC

    San Miguel, CA · CSLB #1114486 · as of October 14, 2026
    Active · clear
25. Oc 405 Partners Joint Venture

    Irvine, CA · CSLB #1021106 · as of October 14, 2026
    Active · clear
26. Occ Builders

    Fountain Valley, CA · CSLB #948162 · as of October 14, 2026
    Active · clear
27. O C & C Construction

    Orange, CA · CSLB #915121 · as of October 14, 2026
    Active · clear
28. Occ Engineering

    Ridgecrest, CA · CSLB #1045102 · as of October 14, 2026
    Active · clear
29. Ocean Blue Engineers Incorporated

    Los Angeles, CA · CSLB #611152 · as of October 14, 2026
    Active · clear
30. Ocean Blue Environmental Services INC

    Long Beach, CA · CSLB #709140 · as of October 14, 2026
    Active · clear
31. Ocean Bound Construction

    San Diego, CA · CSLB #962471 · as of October 14, 2026
    Active · clear
32. Oc Engineering And Construction INC

    Riverside, CA · CSLB #1150010 · as of October 14, 2026
    Active · clear
33. Oc Jones & Sons Bridgeway Civil Constructors A Joint Venture

    Berkeley, CA · CSLB #1074653 · as of October 14, 2026
    Active · clear
34. O C Jones & Sons INC

    Berkeley, CA · CSLB #759729 · as of October 14, 2026
    Active · clear
35. O C L A Construction

    Laguna Niguel, CA · CSLB #1000245 · as of October 14, 2026
    Active · clear
36. O'connell Engineering & Construction INC

    Winchester, CA · CSLB #883686 · as of October 14, 2026
    Active · clear
37. O'connor Pipelines INC

    San Francisco, CA · CSLB #1056307 · as of October 14, 2026
    Active · clear
38. O'coy & Sons Equipment

    Red Bluff, CA · CSLB #793776 · as of October 14, 2026
    Active · clear
39. O C Ramps INC

    Santa Ana, CA · CSLB #995047 · as of October 14, 2026
    Active · clear
40. O C Vacuum INC

    City Of Industry, CA · CSLB #706710 · as of October 14, 2026
    Active · clear
41. Odell's Pump & Motor

    Visalia, CA · CSLB #826935 · as of October 14, 2026
    Active · clear
42. O D I C Environmental

    Brea, CA · CSLB #918987 · as of October 14, 2026
    Active · clear
43. Odigos Construction INC

    Long Beach, CA · CSLB #1063966 · as of October 14, 2026
    Active · clear
44. Odin

    Roseville, CA · CSLB #1087001 · as of October 14, 2026
    Active · clear
45. Odin - Raito JV

    Roseville, CA · CSLB #1120973 · as of October 14, 2026
    Active · clear
46. Odin Real Estate Group LLC

    Loomis, CA · CSLB #1038866 · as of October 14, 2026
    Active · clear
47. O'donnell Landscape

    Carlsbad, CA · CSLB #610470 · as of October 14, 2026
    Active · clear
48. O'donovan Construction INC

    Orange, CA · CSLB #903554 · as of October 14, 2026
    Active · clear
49. Finbarr O'donovan Construction

    San Francisco, CA · CSLB #764265 · as of October 14, 2026
    Active · clear
50. Od Services LLC

    Rialto, CA · CSLB #1107399 · as of October 14, 2026
    Active · clear
51. O'duffy Bros INC

    Romoland, CA · CSLB #776934 · as of October 14, 2026
    Active · clear
52. O'duffy Construction

    Romoland, CA · CSLB #647025 · as of October 14, 2026
    Active · clear
53. Odyssey Environmental Services INC

    Galt, CA · CSLB #774370 · as of October 14, 2026
    Active · clear
54. O E C Energy

    Altadena, CA · CSLB #856361 · as of October 14, 2026
    Active · clear
55. Offins General Engineering LLC

    Hoopa, CA · CSLB #1088235 · as of October 14, 2026
    Active · clear
56. Offset General Contractor

    Willows, CA · CSLB #991692 · as of October 14, 2026
    Active · clear
57. Offsite Utilities INC

    Shingle Springs, CA · CSLB #1118398 · as of October 14, 2026
    Active · clear
58. Ofrs, INC

    Signal Hill, CA · CSLB #994684 · as of October 14, 2026
    Active · clear
59. O G Construction

    Oxnard, CA · CSLB #814951 · as of October 14, 2026
    Active · clear
60. O & G Industries INC

    Torrington, CA · CSLB #672077 · as of October 14, 2026
    Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of October 14, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.