CORNERSTONE CONST & MAINT LLC
CONSTRUCTION CONTRACTOR · MERCER ISLAND, WA 98040
State license
- Number
- CORNECM858DQ
- Type
- CONSTRUCTION CONTRACTOR
- Status
- active
- Expires
- 2027-03-30
- Source
- Washington L&I
Location & contact
Trades
Google profile & public reviews
Live Google place card and public reviews for CORNERSTONE CONST & MAINT LLC
Matched to a Google place on 2026-09-01 at 69% name confidence. Rating is Google’s.
Interactive location map
PO BOX 299
Tiles © OpenStreetMap contributors, ODbL. Position from the matched Google place.
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Fieldaira community reviews
Ratings from customers who hired CORNERSTONE CONST & MAINT LLC, scored on the things that decide a job. Reviewed by our team before publishing.
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Nearby contractors
Great-circle distance from CORNERSTONE CONST & MAINT LLC, computed from mapped positions.
Quick answers
Answered from the public license record — not from reviews or estimates.
›Is CORNERSTONE CONST & MAINT LLC licensed in Washington?
Yes. CORNERSTONE CONST & MAINT LLC holds license CORNECM858DQ (CONSTRUCTION CONTRACTOR) recorded by Washington L&I, valid to 2027-03-30. This listing is refreshed from that public register.
›What work does CORNERSTONE CONST & MAINT LLC do?
The Washington register does not break this license down by trade, so no trade is claimed here.
›How do I contact CORNERSTONE CONST & MAINT LLC?
Contact details are shown above. They were matched to this business from its public Google place, not supplied by CORNERSTONE CONST & MAINT LLC.
›Where is CORNERSTONE CONST & MAINT LLC located?
MERCER ISLAND, Washington, per the address on the license record.