TETRA TECH EC INC

Directory information score: 6/100
Profile updated October 2, 2026

Washington State Labor & Industries’ contractor license dataset lists TETRA TECH EC INC as a construction contractor with the general-contractor specialty. As observed on 2026-10-02, the dataset listed TETRATE951JZ (ACTIVE, expires 12/02/2027). Its listed mailing address is One Oxford Valley, Suite 614, Langhorne, WA 19047, and its listed business phone is 2157024036. L&I describes these as contractor-reported records; the mailing address and phone have not been independently confirmed.

Directory information score for TETRA TECH EC INC

Fixed points summarize recorded information, not service quality. Missing data adds no points and may explain a lower score. Listed credentials and press mentions are not independently verified by this score.

Public rating
N/A/5 → 0 / 35 points
Review Volume
0 reviews → 0 / 20 points
Listed credentials
None listed → 0 / 5 points
Listed press mentions
0 mentions → 0 / 3 points
Web Presence
0 / 20 points
Recorded history
N/A → 0 / 2 points
Profile information
6 / 15 points

Key facts

Based in
Langhorne, WA
Address
One Oxford Valley, Suite 614
Phone
2157024036
Budget tier
Contact firm
Licensed in
WA

Frequently asked questions

What services does TETRA TECH EC INC offer?
TETRA TECH EC INC's specific services are not yet catalogued in our directory. Contact the firm directly for their current service offerings.
What is TETRA TECH EC INC's typical project cost?
Cost information for TETRA TECH EC INC is not published in our directory. Contact the firm directly at 2157024036 for a project-specific quote.
Where is TETRA TECH EC INC located and what areas do they serve?
TETRA TECH EC INC is based in Langhorne, WA and lists licensing in WA. Confirm current standing with the relevant regulator.
How do I hire TETRA TECH EC INC?
To hire TETRA TECH EC INC: call 2157024036. Most contractors ask about scope, timeline, and budget range before scheduling an estimate.