Insulation & Weatherization contractors in EL CAJON, CA
9 listingsSource: California CSLB license records. Last verified 2026-08-31.
There are 9 insulation & weatherization contractors in EL CAJON, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2026-09-30; every listing shows its own number and expiry date. All are drawn from the California CSLB register; expired and inactive licenses are excluded.
| Business | License | Type | Expires | City | Zip | |
|---|---|---|---|---|---|---|
| BSC-NEVELL JV LLC | 1098599 | C-2, C-9, C-35 | 2026-11-30 | EL CAJON | 92020 | Set up workspace |
| CALIFORNIA MECHANICAL INSULATION | 965569 | C-2 | 2027-09-30 | EL CAJON | 92020 | Set up workspace |
| EARP INSULATION | 916015 | C-2 | 2026-09-30 | EL CAJON | 92019 | Set up workspace |
| J AND M INTERIOR SPECIALTIES INC | 572769 | C-2, C-6, C-9, D12, D34 | 2027-07-31 | EL CAJON | 92020 | Set up workspace |
| SPIRA-LOC | 583829 | A, B, C-2, C-4, C-10, C-16, C-20, C-34, C-36, C-38, C-43, C-55, D62 | 2027-12-31 | EL CAJON | 92020 | Set up workspace |
| TOWNE DRYWALL INC | 1020340 | C-2, C-9 | 2026-11-30 | EL CAJON | 92020 | Set up workspace |
| TRI-COUNTY INSULATION COMPANY INC | 269753 | C-2 | 2027-05-31 | EL CAJON | 92020 | Set up workspace |
| UNIVERSITY INDUSTRIAL SERVICES | 583838 | A, B, C-2, C-4, C-10, C-16, C-20, C-34, C-36, C-38, C-43, C-55 | 2028-08-31 | EL CAJON | 92020 | Set up workspace |
| UNIVERSITY MECHANICAL & ENGINEERING CONTRACTORS INC | 460213 | A, B, C-2, C-4, C-10, C-16, C-20, C-34, C-36, C-38, C-43, C-55 | 2028-07-31 | EL CAJON | 92020 | Set up workspace |
Quick answers
- How many insulation & weatherization contractors are in EL CAJON?
- 9 with a current California license, as of 2026-08-31.
- How do I check a license is current?
- Every listing shows its state license number and expiry. Verify any of them directly against the California CSLB licensee database.