Licensed Insulation & Acoustical (C-2) contractors in California

The California Contractors State License Board (CSLB) lists 691 California contractors classified C-2 (Insulation & Acoustical (C-2)). Each entry below links to a full dossier with license status, insurance, bond, and enforcement — as of June 27, 2026.

Showing 1–60 of 691 contractors

1. #1 Acoustics

   Hayward, CA · CSLB #749358 · as of June 27, 2026
   Active · clear
2. 805 Contracting INC

   Santa Barbara, CA · CSLB #1058974 · as of June 27, 2026
   Active · clear
3. 8 A Insulation CO

   Ceres, CA · CSLB #911632 · as of June 27, 2026
   Active · clear
4. A&a Insulation General Partnership

   Victorville, CA · CSLB #1130927 · as of June 27, 2026
   Active · clear
5. Larry O Crother INC DBA Abc Insulation & Supply CO

   Rancho Cordova, CA · CSLB #369263 · as of June 27, 2026
   Active · clear
6. Above And Beyond Insulation

   Anaheim, CA · CSLB #1155454 · as of June 27, 2026
   Active · clear
7. Abs Acoustics

   San Diego, CA · CSLB #931587 · as of June 27, 2026
   Active · clear
8. Accurate Acoustics INC

   Riverside, CA · CSLB #756641 · as of June 27, 2026
   Active · clear
9. Accurate Firestop & Insulation

   Pleasanton, CA · CSLB #710044 · as of June 27, 2026
   Active · clear
10. Ace Insulation Incorporation

    Petaluma, CA · CSLB #962891 · as of June 27, 2026
    Active · clear
11. Ach Insulation LLC

    Moreno Valley, CA · CSLB #624628 · as of June 27, 2026
    Active · clear
12. Ac Masters INC

    Los Angeles, CA · CSLB #1051755 · as of June 27, 2026
    Active · clear
13. Acme Acoustic

    Concord, CA · CSLB #1151512 · as of June 27, 2026
    Active · clear
14. Acoustical Designs

    Occidental, CA · CSLB #969869 · as of June 27, 2026
    Active · clear
15. Acoustical Engineers Of California

    Rancho Cordova, CA · CSLB #443001 · as of June 27, 2026
    Active · clear
16. Acoustic Interior Solutions

    Riverside, CA · CSLB #1129495 · as of June 27, 2026
    Active · clear
17. Acoustics & Building Interiors INC

    Poway, CA · CSLB #561663 · as of June 27, 2026
    Active · clear
18. Acoustic Solutions

    Fresno, CA · CSLB #920917 · as of June 27, 2026
    Active · clear
19. Acousticworks INC

    Escondido, CA · CSLB #775459 · as of June 27, 2026
    Active · clear
20. Ad-in Incorporated

    Fremont, CA · CSLB #655165 · as of June 27, 2026
    Active · clear
21. Ad Insulation

    Tracy, CA · CSLB #1122512 · as of June 27, 2026
    Active · clear
22. A D L Professional Insulation

    Antioch, CA · CSLB #1064718 · as of June 27, 2026
    Active · clear
23. Advanced Drywall Construction INC

    Fresno, CA · CSLB #1040914 · as of June 27, 2026
    Active · clear
24. Advanced Installations INC

    Palm Desert, CA · CSLB #520860 · as of June 27, 2026
    Active · clear
25. Brian Record DBA Advanced Mechanical Specialities

    Corona, CA · CSLB #1053580 · as of June 27, 2026
    Active · clear
26. Advantage Plus Energy Insulation

    San Clemente, CA · CSLB #942625 · as of June 27, 2026
    Active · clear
27. Alfredo Esparza DBA A E Acoustics

    Walnut, CA · CSLB #460512 · as of June 27, 2026
    Active · clear
28. Christian Fernando Aguilar

    Pomona, CA · CSLB #1055906 · as of June 27, 2026
    Active · clear
29. Harvey Aingworth Acoustic Ceilings

    Thousand Oaks, CA · CSLB #715743 · as of June 27, 2026
    Active · clear
30. Air Control Systems INC

    Ontario, CA · CSLB #639003 · as of June 27, 2026
    Active · clear
31. Air King

    Scottsdale, CA · CSLB #1011322 · as of June 27, 2026
    Active · clear
32. Airpro Master INC

    Las Vegas, CA · CSLB #1012763 · as of June 27, 2026
    Active · clear
33. Air Seal Insulation INC

    Oxnard, CA · CSLB #1102423 · as of June 27, 2026
    Active · clear
34. California Energy Consortium INC DBA Airsmiths Home Performance

    Sacramento, CA · CSLB #950795 · as of June 27, 2026
    Active · clear
35. A J Heating & Cooling INC

    Union City, CA · CSLB #921382 · as of June 27, 2026
    Active · clear
36. A M Wighton And Sons DBA A & J Refrigeration

    San Luis Obispo, CA · CSLB #488379 · as of June 27, 2026
    Active · clear
37. Alert Insulation Of California LLC

    La Puente, CA · CSLB #1077712 · as of June 27, 2026
    Active · clear
38. Alexander Acoustics

    San Diego, CA · CSLB #883917 · as of June 27, 2026
    Active · clear
39. All About Insulation INC

    Hollister, CA · CSLB #1117122 · as of June 27, 2026
    Active · clear
40. All About T-bar

    Diamond Bar, CA · CSLB #570421 · as of June 27, 2026
    Active · clear
41. All Climate Air INC

    Bakersfield, CA · CSLB #870111 · as of June 27, 2026
    Active · clear
42. Alley Cat Creations

    San Leandro, CA · CSLB #1018396 · as of June 27, 2026
    Active · clear
43. Allied Insulation INC

    Redondo Beach, CA · CSLB #496841 · as of June 27, 2026
    Active · clear
44. All Season's Insulation

    Pleasant Hill, CA · CSLB #807832 · as of June 27, 2026
    Active · clear
45. All - Star Insulation CO

    Claremont, CA · CSLB #784825 · as of June 27, 2026
    Active · clear
46. All State Insulation INC

    Fremont, CA · CSLB #1148090 · as of June 27, 2026
    Active · clear
47. Allstate Spray Foam Insulation

    Visalia, CA · CSLB #1052735 · as of June 27, 2026
    Active · clear
48. All Valley Acoustics

    Fresno, CA · CSLB #998918 · as of June 27, 2026
    Active · clear
49. Alpha HVAC & Electrical

    San Jose, CA · CSLB #1060833 · as of June 27, 2026
    Active · clear
50. Alpha Insulation

    Bakersfield, CA · CSLB #1150165 · as of June 27, 2026
    Active · clear
51. Alpha Insulation

    Victorville, CA · CSLB #1071845 · as of June 27, 2026
    Active · clear
52. Am Acoustics

    Brentwood, CA · CSLB #1147072 · as of June 27, 2026
    Active · clear
53. America Insulation

    Sacramento, CA · CSLB #1152946 · as of June 27, 2026
    Active · clear
54. American Acoustics

    San Diego, CA · CSLB #974392 · as of June 27, 2026
    Active · clear
55. American Attic

    Oakland, CA · CSLB #1059651 · as of June 27, 2026
    Active · clear
56. American Attics

    Tracy, CA · CSLB #1117229 · as of June 27, 2026
    Active · clear
57. American Hmi Insulation

    Dos Palos, CA · CSLB #1133527 · as of June 27, 2026
    Active · clear
58. American Industrial Scaffolding INC

    Concord, CA · CSLB #1008202 · as of June 27, 2026
    Active · clear
59. Bradley Jay Amidan

    Azusa, CA · CSLB #1080460 · as of June 27, 2026
    Active · clear
60. Anderson Rowe & Buckley INC

    San Francisco, CA · CSLB #91594 · as of June 27, 2026
    Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of June 27, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.