We service the entire island of Oahu Hawaii

 

General contractors, civil engineers, septic systems, septic tanks, cesspool upgrades, leach fields, pump stations, grease traps, grease and sewer pumping

 

Aiea - Barbers Point NAS - Ewa Beach - Fort Shafter - Haleiwa - Hauula - Hawaii Kai - Honolulu - Kaaawa - Kahalu'u - Kahuku - Kailua - Kaneohe - Kapolei
Kunia - Laie - Mililani - Pearl City - Wahiawa - Waialua - Waianae - Waikiki - Waimanalo - Waipahu

 

and all surrounding areas!

Testimonials

"Cowper Construction finished my project on time and added some great ideas to improve the excavation design. Pro job and great skill with the equipment. I should have been using Cowper on my other jobs." ~ Kevin M


"Great company and I am happy with their work. Welcome back on my jobs any time!" ~ Kurt Davis


"My cesspool upgrade in Hawaii went down without any hangups. Thank you Mike and Bob!" ~ Aloha Jerry Driscoll

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