Mountain Building Supply LLC (USDOT 4263666)
No blockers or cautions found.
- DOT number
- USDOT 4263666
- Operating authority
- Federal operating authority is not applicable: this is an intrastate operation, with no federal docket required. The federal bulk file showed this carrier active as of 2026-08-27. We could not confirm that live just now.
- Insurance on file
- No active liability (BIPD) insurance on file with FMCSA.
- Safety rating
- No published safety rating
- Fleet on file
- 3 power units, 5 drivers
- Operation type
- Intrastate Non-Hazmat
- Physical address
- 1947 LEE RD, QUINCY, CA 95971
- MCS-150 last filed
- 2025-10
Frequently asked questions
What carrier is DOT 4263666?
DOT 4263666 (USDOT 4263666) is Mountain Building Supply LLC, an intrastate non-hazmat motor carrier.
What is Mountain Building Supply LLC's USDOT number?
Mountain Building Supply LLC's USDOT number is 4263666. No MC docket number is on file.
Is Mountain Building Supply LLC currently authorized to operate?
Federal operating authority is not applicable: this is an intrastate operation, with no federal docket required. The federal bulk file showed this carrier active as of 2026-08-27. We could not confirm that live just now. Source: FMCSA registration and licensing records.
Does Mountain Building Supply LLC have insurance on file with FMCSA?
No active liability (BIPD) insurance on file with FMCSA.
What is Mountain Building Supply LLC's safety record?
In the last 24 months, FMCSA records show 1 of 3 vehicle inspections ending out-of-service for Mountain Building Supply LLC, too few inspections for a stable rate. FMCSA records also show 0 recordable crashes in the same window.
What is Mountain Building Supply LLC's CSA score?
FMCSA does not publish a single CSA score for carriers. Mountain Building Supply LLC's public safety data includes its roadside inspection out-of-service rates and crash record, listed on this page.
What is Mountain Building Supply LLC's FMCSA safety rating?
Mountain Building Supply LLC has no published FMCSA safety rating. Most US carriers have never received a rating review, so an unrated carrier is the common case, not a warning sign by itself.
Changes over time
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