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Grubb Lumber Company Inc (DOT# 33524) – FMCSA Carrier Profile

DOT# 33524● Active
Updated: 2026-03-09

Grubb Lumber Company Inc is a registered motor carrier with the FMCSA under USDOT number 33524. The company operates from Wilmington, DE and maintains an active operating status with 17 power units and 7 drivers on record.

Safety Rating

FMCSA Safety Rating
⚠ Conditional
Rated: December 18, 1987

Grubb Lumber Company Inc holds a "Conditional" safety rating from the Federal Motor Carrier Safety Administration (FMCSA). This rating indicates that some safety deficiencies were found during the most recent compliance review conducted by FMCSA. View official FMCSA record →

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Company Information

Address200 A Street, Wilmington, DE, 19801-5221
Phone(302) 652-2800
Emailazentz@grubblumber.com
Entity TypePrivate Property
OperationInterstate
Power Units17
Drivers7
MCS-150 FiledMarch 3, 2026
Annual Mileage350,000 mi (2025)
All carriers in Delaware→Carriers in Wilmington, DE→

Inspection Summary

All-time Inspections
All-time
21
Total
6
OOS
0
Driver OOS
6
Vehicle OOS
OOS Rate28.57%
The out-of-service (OOS) rate represents the percentage of inspections that resulted in the carrier being placed out of service.

BASICS Safety Scores

BASICS Scores
Higher = more risk · FMCSA Behavior Analysis and Safety Improvement Categories
2.8
Unsafe Driving
0.0
HOS Compliance
0.0
Driver Fitness
0.0
Controlled Substances
4.2
Vehicle Maintenance
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Frequently Asked Questions

What is USDOT Number 33524?
USDOT number 33524 is assigned to Grubb Lumber Company Inc, an active motor carrier registered with the FMCSA, based in Wilmington, DE.
What is the safety rating of Grubb Lumber Company Inc?
Grubb Lumber Company Inc has a safety rating of Conditional as of December 18, 1987.
How many inspections has Grubb Lumber Company Inc had?
Grubb Lumber Company Inc has recorded 21 total inspections with 6 out-of-service orders, representing an OOS rate of 28.57%.
Where is Grubb Lumber Company Inc located?
Grubb Lumber Company Inc is headquartered at 200 A Street, Wilmington, DE 19801-5221.

Data sourced from the FMCSA Open Data Portal. Updated monthly. DOT# 33524 · Last updated: 2026-03-09. View official FMCSA record →