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40 Years
experience
Emergency
services
Your Reliable Septic Partner in Whatcom County
Coast Construction has been a cornerstone in Whatcom County, WA, delivering top-tier septic system services since 1986. With over four decades of expertise, our family-owned business has built a reputation for reliability and excellence. We specialize in comprehensive septic services, including new installations, regular maintenance, and emergency repairs, all performed by a fully licensed and insured team. Our commitment to safety, meticulous site preparation, and ability to handle challenging terrains set us apart.

We offer free estimates and second opinions, ensuring transparency and trust with all clients. Beyond professional services, we support local school sports, emphasizing our dedication to the community. Our 14-month labor and materials warranty underscores our confidence in the quality of our work. We blend expertise with a genuine commitment to client needs, making us a trusted partner for septic and construction solutions in Whatcom County.
Services
Septic Installation Septic Repair Septic Maintenance Site Preparation Skid Steer Services Portable Toilet Rental
Details
  • Year established: 1986
Highlights and features
  • We have over 40 years of experience in septic and construction services.
  • We offer free estimates and second opinions with no obligation.
  • Our team is fully licensed, insured, and bonded for your protection.
  • We provide a 14-month labor and materials warranty on all installations.
  • We actively support local school sports and community initiatives.
What people say
Reliable service Prompt emergency repairs Community-focused business Expertise in challenging terrains Transparent estimates
Services
Septic Installation
Coast Construction specializes in new septic system installations tailored to property needs. Our process includes site evaluation, permit acquisition, and compliance with local regulations. We use high-quality materials to ensure durability and efficiency, providing systems that meet household demands while minimizing environmental impact. Our expertise guarantees long-term performance and peace of mind.
Septic Maintenance
Regular maintenance is crucial for septic system longevity. We offer pumping, inspections, and filter cleaning to prevent failures. Our team identifies minor issues early, avoiding costly repairs. Services are designed to maintain optimal functionality, protect groundwater, and comply with health standards, ensuring safe and reliable operation year-round.
Site Preparation
We provide comprehensive site prep for custom and mobile homes, including grading, leveling, and utility installation. Our services ensure proper drainage and foundation stability, addressing challenging terrains and environmental considerations. Expertise in erosion control and pad installation guarantees a solid start for construction projects.
Skid Steer Services
Our skid steer operations handle land clearing, brush removal, and material handling with precision. Advanced equipment and skilled operators tackle tasks like grading and excavation, supporting septic installations and property maintenance. Services are efficient, adaptable to terrain, and focused on client-specific needs.
Portable Toilet Rental
We offer clean, well-maintained portable toilets for events, construction sites, and emergencies. Units are delivered promptly and serviced regularly to ensure hygiene. Options include accessible models and weekly maintenance plans, providing reliable sanitation solutions for any project size.
Questions
What septic services do you offer?
We provide installations, repairs, maintenance, pumping, and inspections for residential and commercial properties in Whatcom County.
Do you offer emergency septic services?
Yes, we handle urgent repairs and system failures with prompt, reliable service to minimize disruptions.
What payment methods do you accept?
We accept cash, checks, and major credit cards including Visa, MasterCard, and Discover.
Are your services available outside Whatcom County?
Our primary service area is Whatcom County, WA. Contact us to discuss specific locations beyond this region.
What warranties do you provide?
We offer a 14-month labor and materials warranty on all septic installations for added peace of mind.
How often should septic tanks be pumped?
We recommend pumping every 3-5 years, depending on tank size and household usage, to maintain system efficiency.