Sam O. Hirota, Inc. (SOH) was established in 1963 as a Honolulu-based consulting Civil Engineering and Land Surveying firm. Our firm has executed a wide range of engineering, planning, surveying, and mapping projects throughout Hawaii, the Trust Territories, and the South Pacific. Projects have served Federal, State and local governments, and the private sector.

For more than 40 years, Okahara and Associates, Inc. in Honolulu, HI, has designed durable mechanical equipment perfectly suited for local industries’ needs. In the mid-80s, their firm added civil engineering services to better serve the infrastructure and land development needs of their community. Trust Okahara and Associates with your next civil engineering, mechanical engineering, and landscape architecture project. They... Read More about Okahara and Associates, Inc.

Located in the heart of Honolulu, HI, Hawaii Geophysical Services LLC has been a trusted name in the realm of utility contracting since 2002. Specializing in a range of geophysical and subsurface investigations, they bring over two decades of expertise to every project. Committed to delivering high-quality, reliable services, Hawaii Geophysical Services LLC is your go-to partner for all your... Read More about Hawaii Geophysical Services LLC