Coast Construction is a licensed on-site septic system installer for Whatcom and Skagit Counties. Our crews receive regular training through the Washington On-site Sewage Association. You can depend on our experienced technicians to install your on-site septic system to local Health Department standards.

If you have an approved septic design for any type of septic system, just give us a call and we will schedule an appointment to meet with you on your site and provide you with an estimate for the installation of your system.

To ensure that your system is operating properly, Coast Construction includes two-year annual operation and maintainence for all the systems we install. Our goal is to ensure that your system is working properly while maintaining a healthy environment. If you have an existing system and you would like us to maintain your system, we offer maintenance contracts specific to your system, either residential or commercial systems.

For more information on how to care for your on-site septic system, visit our Septic Care page.