Excavation & Land Development — Built for the Oregon Coast.

Osburn Olson has been developing the North Oregon Coast since 1992. When your project needs to be done right the first time — in coastal soils, under coastal conditions, by a team that knows this ground — we’re the call you make.

🏗️ Est. 1992

33+ Years on the Coast

👷 50+

Years Combined Experience

📋 CCB

Oregon Licensed & Insured

📍 FREE

Site Evaluations & Quotes

Full-Service Excavation & Land Development

From a single residential septic installation to full subdivision infrastructure — Osburn Olson has the equipment, the expertise, and the coast-specific experience to handle it all.

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Excavation Services

General, residential, and commercial excavation with a full fleet of modern equipment sized for every job on the North Coast.

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Septic Systems

Coast-specific septic installation, repair, and replacement. We navigate Clatsop County DEQ permits and coastal soil challenges every day.

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Site Development

Full site preparation and infrastructure for residential lots, commercial sites, and subdivision projects across Clatsop County.

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Retaining Walls

Block and rock retaining walls engineered for coastal Oregon — accounting for soil saturation, slope stability, and seasonal erosion.

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Land Clearing & Mowing

Coastal brush, blackberry, timber clearing, and mowing for lots, acreage, and pre-development sites — we leave your land ready for what’s next.

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Dirt & Gravel Hauling

Rock, fill dirt, and gravel hauling from Manzanita to Astoria — import, export, delivery, and driveway gravel installation.

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Demolition

Residential and commercial structure demolition, concrete removal, and complete site cleanup and debris haul-off throughout Clatsop County.

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Drainage & Culverts

Drainage systems and culvert installation built for the Oregon Coast’s intense rainfall — French drains, catch basins, and road culverts done right.

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Underground Utilities

Water, sewer, electrical conduit, and stormwater infrastructure installation for new construction and replacement projects across the North Coast.

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We Know
This Coast.

Building on the North Oregon Coast is not like building anywhere else. Sandy soils near Cannon Beach, steep hillside terrain in Astoria, high water tables throughout Clatsop County, salt-laden air, and rain-saturated ground from October through April — these are challenges that demand coast-specific expertise no out-of-area contractor can bring.

Our team lives here. We’ve built here our entire careers. When you call us, you’re talking to people who have a personal stake in the permanence of every project we complete.

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Modern Equipment

A large fleet of excavators scaled to every job — from a residential dig-out to full subdivision infrastructure.

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Certified & Licensed

Oregon CCB licensed, bonded, and insured. We know the permits, the DEQ process, and the local requirements that matter.

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Competitive Pricing

Three decades on the coast means we know how to keep costs efficient without cutting corners on quality.

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Done Right. Guaranteed.

We stand behind our work. Our experienced crew gets your project done right — the first time.

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Truly Local

We live and work on the Oregon Coast. We know the terrain, the weather, the regulations, and the communities.

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Personal Service

Local ownership means personal accountability on every project. Our name is on every truck. We answer the phone.

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Years on the North Oregon Coast

Operating since 1992

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Years Combined Team Experience

Excavation & construction experts

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Cities Served on the North Coast

Cannon Beach to Astoria

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Services Offered

Full-service excavation & development

Projects on the North Coast

Site Preparation — Warrenton, OR

Residential Excavation — Seaside, OR

Retaining Wall — Cannon Beach, OR

Land Clearing — Gearhart, OR

Subdivision Development — Warrenton, OR

The Entire
North Oregon Coast

Based in Warrenton, Osburn Olson serves the full stretch of the North Oregon Coast — from the sandy oceanfront lots near Cannon Beach, through Seaside and Gearhart, to the hillside neighborhoods of Astoria, and out to Hammond, Knappa, and beyond.

What Our Clients Say

★★★★★

“Osburn/Olson has been doing my Excavation, site Work and septic work for many years now. I enjoy working with them because they have an efficient knowledgeable staff. They make the start of any project stress-free. You are in good hands with this company for all your excavation and septic needs.”

Tyler W.

★★★★★

“Osburn/Olson helped me out with clearing land, my septic tank installation, and a lot of other things. They have a variety of ways to add value to your project, definitely good to have around when you need dirt work, land cleared, etc.”

Maxwell B.

Three Decades Building
the North Oregon Coast

Osburn Olson has been developing the North Oregon Coast since 1992. In more than three decades, we’ve built residential lots, cleared land for subdivisions, installed hundreds of septic systems, constructed retaining walls that stop coastal erosion, and put the infrastructure underground that makes every new building possible.

We’re not the biggest company in Oregon. But on the North Coast — from Cannon Beach to Astoria — we know this ground like no one else does. Our team brings over 50 years of combined experience to every project, large and small.

Osburn Olson is a family business led by local ownership. Our name is on every truck, every bid, and every completed project. That accountability is not a talking point — it’s the way the company has operated since day one.

CCB Licensed

Bonded & Insured

Est. 1992

Warrenton, OR

1992
Est.

Your Project Starts
With One Call.

Free site evaluation. Honest assessment. Straight quote.
No runaround. No obligation.

503-717-3907

Mon–Fri: 8:00am – 7:00pm
Saturday: 8:00am – 2:00pm
2207 SE Dolphin Ave · Warrenton, OR 97146

Trusted Partners

Ryan Osburn Plumbing

Oregon CCB Licensed

Clatsop County

Excavation & Land Development — Built for the Oregon Coast.

Full-Service Excavation & Land Development

We Know This Coast.

Projects on the North Coast

The Entire North Oregon Coast

What Our Clients Say

Three Decades Building the North Oregon Coast

Your Project Starts With One Call.

We Know
This Coast.

The Entire
North Oregon Coast

Three Decades Building
the North Oregon Coast

Your Project Starts
With One Call.