- (360) 485-6579
Brynion Excavation builds retaining walls across southwest Washington for residential and commercial properties that need dependable soil control, erosion prevention, and usable grade. Based in Kelso, WA, our crews handle every wall type — from modular concrete block to natural stone and large-format boulders — selecting the right system based on your site’s load requirements, slope, and drainage conditions. We serve Kelso, Longview, and Kalama, sizing each project correctly from the first site visit so you avoid costly overbuilds or undersized walls that fail within a few seasons.
(360) 485-6579
Every retaining wall project starts with a site evaluation: we assess soil type, existing drainage patterns, and the height and length of wall required. In Washington, walls over four feet often require a permit and engineered plans — Brynion Excavation is familiar with Cowlitz County and Clark County permit thresholds and can help you navigate that process. We integrate drainage into every installation, using crushed rock backfill and perforated drain pipe behind the wall face to relieve hydrostatic pressure, the most common cause of wall failure in our wet Pacific Northwest climate.
(360) 485-6579
With over 15 years of excavation and site work in the Kelso, WA area, Brynion Excavation brings the equipment and know-how to install walls that hold for decades, not seasons. We handle the full scope — grading, compaction, block placement, and drainage tie-in — so you deal with one contractor from start to finish. Our work covers Kelso, Woodland, and communities throughout southwest Washington. Contact us today to schedule a free estimate and find out which wall system fits your site and budget.
(360) 485-6579
We combine experience, reliability, and local knowledge to deliver excavation services you can count on. From emergency appointments to long-term projects, we get the job done right.
We complete every excavation project on time with efficient workflows, dependable equipment, and no unnecessary delays.
Need excavation help fast? We offer emergency appointments for urgent site issues that require immediate attention.
We provide transparent estimates and fair pricing, delivering quality excavation work without hidden fees or inflated costs.
As a locally owned company, we proudly serve Kelso and surrounding areas with care, integrity, and accountability.
Service you can trust.
Real feedback from homeowners and contractors who trust Brynion Excavation.
Answers to common questions about our excavation and site preparation services in Kelso, WA.
In Washington, retaining walls over 4 feet in height (measured from the bottom of the footing) generally require a building permit and engineered drawings. Cowlitz and Clark counties follow this threshold, though local municipalities may have additional requirements. Brynion Excavation can walk you through what’s needed for your specific site in Kelso or the surrounding area before any work begins.
The most common cause of retaining wall failure is hydrostatic pressure — water building up in the soil behind the wall with nowhere to go. We prevent this by installing crushed gravel backfill and perforated drain pipe behind every wall we build. Proper compaction in lifts and correct base preparation also prevent settling and wall lean over time.
Yes. A properly designed retaining wall — or a series of terraced walls — can convert steep, unusable slope into flat yard, garden, driveway pad, or building area. Brynion Excavation handles both the excavation to cut the slope and the wall installation to hold that new grade, giving you a complete solution in Kelso, Longview, or anywhere in our service area.
Yes. Brynion Excavation works on commercial sites throughout southwest Washington, including parking lot perimeter walls, loading dock grade separations, and large slope stabilization projects. Commercial jobs often require heavier wall systems — such as ultra block or engineered modular block — and we have the equipment and experience to handle those efficiently. Contact us to discuss your commercial site requirements.
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