TREFETHEN AND CO INC
CONSTRUCTION CONTRACTOR · Seattle, WA 98134
State license
- Number
- TREFECI914JZ
- Type
- CONSTRUCTION CONTRACTOR
- Status
- active
- Expires
- 2027-05-14
- Source
- Washington L&I
Location & contact
Trades
Google profile & public reviews
Live Google place card and public reviews for TREFETHEN AND CO INC
Matched to a Google place on 2026-09-02 at 100% name confidence. Rating is Google’s.
Interactive location map
3430 E Marginal Wy S, Seattle, WA 98134
Tiles © OpenStreetMap contributors, ODbL. Position from the matched Google place.
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Nearby contractors
Great-circle distance from TREFETHEN AND CO INC, computed from mapped positions.
Quick answers
Answered from the public license record — not from reviews or estimates.
›Is TREFETHEN AND CO INC licensed in Washington?
Yes. TREFETHEN AND CO INC holds license TREFECI914JZ (CONSTRUCTION CONTRACTOR) recorded by Washington L&I, valid to 2027-05-14. This listing is refreshed from that public register.
›What work does TREFETHEN AND CO INC do?
The Washington register does not break this license down by trade, so no trade is claimed here.
›How do I contact TREFETHEN AND CO INC?
Contact details are shown above. They were matched to this business from its public Google place, not supplied by TREFETHEN AND CO INC.
›Where is TREFETHEN AND CO INC located?
Seattle, Washington, per the address on the license record.