Septic systems designed for your soil and installed to last.
Whether you're building on rural land, replacing a failing system, or expanding for a new use, septic system work is one of those things you really want done right the first time. A bad install can cost you tens of thousands to fix and can pull permits into question for years.
We're a DEQ-licensed septic installer (#39957), which means we're certified by the state of Oregon to design and install systems that meet code and last. We handle the full scope: soil evaluation coordination, permitting, tank install, drainfield layout, connection, and site restoration.
Rural properties, farms, ADU sites, replacement systems. We've worked across the range.
Every property is different. Soil composition and drainage determine what system fits. We coordinate with certified soil evaluators and design a system that actually fits your land.
Oregon has real standards for septic installs, and inspectors check the work. As a DEQ-licensed installer, we know the requirements and we build to them from day one.
We use approved concrete or plastic tanks, proper distribution boxes, and drainfield materials rated for the load and lifespan you need.
Drainfields need the right size, depth, and layout to handle wastewater long-term. This is where a lot of failing systems went wrong at install. We build them to last.
We handle the permit paperwork, inspections, and documentation. You end with a legal, permitted system and the records to prove it if you ever sell the property.
Core Excavation & Construction is a family-run company built on quality workmanship, direct communication, and dependable service.
Our team brings the skills, knowledge, and hands-on experience needed to approach each project with confidence, attention to detail, and a commitment to doing the job right.
Six years in business, our approach remains the same: the people you communicate with are directly involved in the work being performed.
When you hire Core, you're hiring an experienced team that stays involved from the initial conversation through completion of the project.
We're fully licensed, bonded, and insured in Oregon and Washington. CCB #230914, WA CCB #WA-COREEEC762R4, DEQ Installer #39957, PB Plumbing #PB2389.
Text or call whenever it's easy. We'll come look at the project, talk through what it takes, and write you an honest estimate. If we're not the right fit for the job, we'll tell you.
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