Quality Excavation.
Island-Tested Results.
Proudly Serving the San Juan Islands With Reliable Earthwork Solutions
Welcome To Eco Earthworks LLC
Eco Earthworks LLC
is proud to provide dependable excavation and infrastructure solutions in Friday Harbor, Washington
and the surrounding areas. With over 20
years of experience, we bring the knowledge, equipment, and attention to detail needed to handle everything from site preparation and excavation to underground utilities, water system services, and septic installation. We understand the unique demands of working in the San Juan Islands and are committed to delivering quality workmanship, efficient service, and reliable results that help keep your project moving forward from the ground up.
Why Choose
Eco Earthworks LLC
High Quality Work
We take pride in delivering high quality workmanship on every project, with careful attention to detail from start to finish. Whether we are handling excavation, utilities, septic installation, or site preparation, our goal is to provide reliable results that are built to last.
Owner Operated
As an owner operated company, we bring a hands-on approach to every job and stay directly involved throughout the process. This allows us to maintain strong communication, dependable service, and the kind of personal accountability customers can count on.
Over 20 Years of Experience
With over 20 years of experience, we have the knowledge and skill to handle a wide range of excavation and earthwork projects with confidence. Our experience allows us to anticipate challenges, work efficiently, and deliver dependable solutions tailored to each property and project.
High End Equipment
We use high end equipment to complete projects safely, efficiently, and with greater precision. Having the right tools for the job helps us provide better results, stay on schedule, and take on demanding work with confidence.
Your Local Partner for Excavation and Utilities
In Friday Harbor, WA and across the San Juan Islands, excavation and utility work often requires more planning than a standard mainland project. Properties in this area can involve rocky soil, sloped terrain, tight access points, and the need to carefully prepare land for septic systems, water lines, and underground utilities. That is why proper site preparation is so important before construction begins. At Eco Earthworks LLC, we bring over 20 years of experience to help property owners create stable, functional sites that support long term performance. We understand the local terrain, island logistics, and the importance of doing the job right the first time.

Our services
What we do
WATER SYSTEM SERVICES
We provide complete water system solutions, including installation, repair, and ongoing maintenance. Our team ensures consistent and reliable water delivery for both residential and commercial properties. We collaborate closely with our clients to design systems that meet standards and long-term efficiency.UNDERGROUND UTILITIES
Our team specializes in installing and maintaining underground utilities, including water, electrical, and communication lines. We use careful excavation techniques to protect existing infrastructure, reduce risks, and ensure that our underground networks remain safe, functional, and durable while meeting every project requirement and client expectation.EXCAVATION SERVICES
We handle all types of excavation projects, including grading, trenching, and site clearing. Our experienced crew uses advanced equipment and proven techniques to deliver safe, efficient, and precise excavation. We ensure projects comply with environmental standards while meeting every timeline and budget requirement.SITE PREPARATION
Our site preparation services include land grading, leveling, and clearing to make your property construction-ready. We carefully assess soil conditions, manage debris, and optimize terrain. Our team ensures foundations are stable, fully prepared, and ready for building, providing reliable support for any development.SEPTIC INSTALLATION
We provide professional septic system installation for residential and commercial properties. Our team evaluates soil and site conditions, designs efficient systems meeting environmental standards, and installs them carefully. We ensure long-term wastewater management solutions that are reliable, safe, and tailored to each property’s specific needs.What our customers have to say...
Testimonials
Brien is super dependable and great to work with. We highly recommend.
Sheryl L.
Brien has done several excavation projects for me, on time on budget and with excellent communication. Highly recommended.
Rick M.
FREQUENTLY ASKED QUESTIONS
What excavation services are most important for properties in Friday Harbor, WA and the San Juan Islands?
In Friday Harbor and throughout the San Juan Islands, excavation often involves much more than basic dirt work because many properties have rocky soil, uneven terrain, tree coverage, and limited site access. Services like site preparation, grading, trenching for underground utilities, septic excavation, and water system work are especially important for getting a property ready for construction or infrastructure improvements. Because island sites can be more complex than mainland lots, excavation needs to be carefully planned to support drainage, stability, and long-term performance. Working with an experienced contractor helps make sure the site is prepared properly for the next phase of the project.
Why is proper site preparation so important before building in the San Juan Islands?
Proper site preparation creates the foundation for a successful build by making sure the land is stable, accessible, and ready for construction, utilities, or septic work. In the San Juan Islands, this is especially important because many lots have slopes, drainage concerns, and natural obstacles that can cause major issues if they are not addressed early. A well-prepared site can help prevent water problems, reduce delays, and support better results for everything built on top of it. Taking the time to prepare the site correctly helps protect both the project timeline and the long-term value of the property.
What should property owners in Friday Harbor know about septic installation, underground utilities, and water system work?
Septic installation, underground utilities, and water system services all require careful excavation and precise planning, especially on island properties where layouts and ground conditions can vary widely. In Friday Harbor and the surrounding areas, these systems need to be installed with attention to drainage, soil conditions, access, and long-term reliability. If this work is done incorrectly, it can lead to costly repairs, service disruptions, or problems that affect the rest of the property. Hiring an experienced contractor helps ensure these critical systems are installed safely, efficiently, and with the specific demands of the area in mind.
Locations
Our Service Areas
Friday Harbor, WA
Roche Harbor, WA
San Juan Island, WA
Expert Excavation Services Built on Trust and Reliability
At
Eco Earthworks LLC, we pride ourselves on delivering precision excavation solutions with a focus on quality and reliability. Serving Friday Harbor, Washington, and surrounding areas, we combine decades of experience with modern equipment to ensure every project exceeds expectations. Our commitment goes beyond completing tasks—we aim to provide seamless service that protects property, enhances land usability, and respects environmental standards. Partnering with us means investing in dependable results, long-term solutions, and a company that treats every project as a priority
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