C3 Construction Corp. handles grading, underground utilities, drainage, and site prep for builders across Oʻahu — including the ADU & ʻohana boom. One licensed civil sub, from the pad to the connections.
Cut, fill & compaction to subgrade.
Clearing, grubbing & mass excavation.
Laterals & service tie‑ins.
Trenching, conduit & duct banks.
Lines, inlets & infiltration systems.
Subbase prep & aggregate base.
Footings, backfill & wall drainage.
BMPs & site stabilization.
C3 Construction Corp. is a woman‑owned site and civil contractor based in Kapolei and serving all of Oʻahu. We self‑perform the work that gets a project out of the ground — grading, underground utilities, drainage, and site prep — for ADU, ʻohana, residential, and commercial builders.
We run a full fleet of our own heavy equipment — excavators, loaders, rollers, backhoes, and trucking — with experienced operators, so we mobilize fast and self‑perform without waiting on rentals. And we bring public and prevailing‑wage discipline to every job: insured, compliant, on schedule, and accountable.
Proudly serving all of Oʻahu — Kapolei, ʻEwa, Pearl City, Mililani, Kailua, Kaneohe, Honolulu, and the North Shore. When you need the civil scope handled right the first time, that’s us.
