Expert Retaining Wall Contractor in Oregon & Washington
Four generations of experience building structural and commercial retaining walls that perform.
- Licensed & Insured for Your Protection (OR CCB 217133 | WA LEGAC6I856KA)
- Value-Engineered Designs for Cost-Effective, Durable Solutions
- Full-Service Site Prep & Excavation for Retaining Walls
The Go-To Partner for Developers & Builders
in the Pacific Northwest
Our reputation is built on performance and trust. With over 80% of our projects coming from repeat clients, we are a proven partner for developers and general contractors who value reliability, communication, and results. We bring the equipment, the team, and the experience to every job site across Oregon and Washington. From initial site assessment to final grading, our comprehensive approach ensures your project’s structural elements are built to last. We don’t just complete tasks; we build lasting relationships by treating every project as if it were our own, delivering quality and peace of mind.
80%+
Repeat Client Rate
4 Generations
Industry Experience
150+ Unit Fleet
For Any Size Project
The Functional Benefits of a Professionally Engineered Retaining Wall
A retaining wall is more than just a landscape feature; it’s a critical structural element that ensures the stability and usability of your property. For commercial and residential developments throughout Oregon and Washington, a properly constructed wall is essential for site optimization, safety, and long-term asset protection. Investing in a professional retaining wall contractor like Legacy 6 Inc. pays dividends by preventing future issues and maximizing the potential of your land.
Maximize Usable Land Area
On sloped or challenging terrain, retaining walls create level, stable ground perfect for building pads, parking lots, and infrastructure. In the hilly topography of the Pacific Northwest, this is a critical service for developers. We help you transform unusable grades into valuable, buildable space, maximizing your return on investment and unlocking the full potential of your property. Our expertise allows us to engineer solutions that add significant square footage of functional area to your site.
Ensure Long-Term Structural Stability
Our structural retaining walls are engineered to withstand immense soil and hydrostatic pressure, which are significant concerns in our region’s wet climate. A poorly built wall is a liability waiting to happen. We construct walls that prevent soil erosion, landslides, and foundation damage, ensuring the safety and integrity of your entire project for decades to come. We collaborate closely with geotechnical and structural engineers to ensure every design is robust and compliant.
Prevent Costly Erosion and Water Damage
Properly designed walls and their integrated drainage systems are your first line of defense against the persistent rainfall of the Pacific Northwest. Our solutions manage water runoff and control soil erosion, protecting your investment from water damage and preserving the landscape. This proactive approach to water management avoids expensive repairs, prevents foundation saturation, and mitigates potential liability issues down the line.
Integrated Sitework Solutions
Choosing Legacy 6 Inc. means you get more than just a wall builder. As a full-service excavation contractor, we handle the entire process from initial clearing and demolition to the precision excavation for retaining walls and final grading. This single-source responsibility streamlines project timelines, eliminates communication gaps between multiple subcontractors, and reduces overall coordination costs for the general contractor or developer.
Comprehensive Retaining Wall Construction Services
Legacy 6 Inc. offers a full spectrum of retaining wall services tailored for commercial, industrial, and large-scale residential projects. Our team has the expertise to manage projects of any complexity, from massive structural walls supporting commercial centers to intricate systems for subdivision developments. We have the fleet, manpower, and project management experience to deliver quality results on time and on budget across Oregon and Washington.
Commercial Retaining Wall Construction
We specialize in constructing large-scale retaining walls for commercial properties, including shopping centers, office parks, and industrial facilities. These projects often require deep excavation and the management of significant grade changes. Our walls are designed to support heavy loads from parking lots, building foundations, and major infrastructure, ensuring the stability and safety of the entire commercial development.
Structural Retaining Walls
Engineered for maximum strength and durability, our structural retaining walls are essential for site safety and stability. These are not merely decorative features; they are critical pieces of infrastructure designed to hold back thousands of tons of earth. We work closely with engineers to ensure every wall meets or exceeds all technical specifications, local building codes, and seismic requirements for the Pacific Northwest.
Excavation for Retaining Walls
Proper excavation is the foundation of a lasting retaining wall. A wall can only be as strong as the ground it’s built on. Our in-house team uses precision equipment like GPS-enabled excavators to prepare the site, excavate for footings, and ensure the base is perfectly graded and compacted for optimal structural support. Handling the excavation ourselves guarantees that this critical first step is done right.
Residential & Subdivision Retaining Walls
For developers building subdivisions and multi-family housing in communities like Hillsboro, Lake Oswego, or Camas, we construct retaining walls that define property lines, create tiered lots for optimal views and drainage, and ensure slope stability throughout the community. We are the trusted retaining wall builders in Oregon and Washington for developers of 10-100 lot projects, understanding the unique demands of residential site development.
Our Proven Process for Building Retaining Walls
in Oregon & Washington
Our process is built on a foundation of communication, transparency, and a team-first approach. We manage every step to foresee challenges, mitigate risks,
and eliminate costly surprises, ensuring a smooth project from start to finish.
Step 1:
Initial Consultation & Site Assessment
We begin by understanding your project’s specific requirements, reviewing geotechnical reports and civil plans, and conducting a thorough site assessment. This helps us identify potential challenges like poor soil conditions, water issues, or site access constraints.
Step 2:
Value Engineering & Design Collaboration
We apply our ‘what if it were our project’ philosophy, collaborating with your team to refine the design. We may suggest cost-effective materials or alternative construction methods to optimize the plan for efficiency, budget, and long-term durability without compromising safety or quality.
Step 3:
Site Preparation & Precision Excavation
Our crews mobilize our fleet of over 150 units to perform all necessary land clearing, grading, and excavation for the retaining wall. We ensure the site is prepared to exact engineering specifications, setting the stage for a successful build.
Step 4:
Foundation & Base Construction
A wall is only as strong as its base. We construct a solid, level footing from compacted aggregate or concrete and install necessary drainage systems like footing drains and chimney drains to manage hydrostatic pressure, which is critical for longevity in the Pacific Northwest.
Step 5:
Wall Construction & Backfilling
Our skilled operators and laborers construct the wall using the specified materials, whether it’s segmental blocks (SRWs) or poured concrete. We carefully backfill with appropriate material and compact it in lifts to ensure the entire system achieves its designed structural integrity.
Step 6:
Final Grading & Site Cleanup
Upon completion, we perform final grading around the wall to ensure proper surface drainage and a seamless integration with the surrounding landscape. We leave the job site clean, safe, and ready for the next phase of your construction project.
What Our Partners Say
Partner with a Retaining Wall Contractor You Can Trust
Don’t risk your project’s stability and budget with an inexperienced contractor. Partner with Legacy 6 Inc. and benefit from four generations of excavation and construction expertise.
Our commitment to communication, safety, and delivering on our promises is why over 80% of our clients choose to work with us again and again. We understand the unique challenges of building in the Pacific Northwest and have the solutions to ensure your project is a success. Let’s build something that lasts.
Frequently Asked Questions About
Retaining Wall Construction
What types of structural retaining walls do you build?
We construct a variety of structural retaining walls based on project needs, soil conditions, and engineering designs. These most commonly include segmental block walls (SRWs), cast-in-place concrete walls, and other engineered systems. We work directly from your project’s civil and structural engineering plans to build to their exact specifications, ensuring full compliance and structural integrity.
How does your value engineering process work for retaining walls?
Our value engineering process involves a collaborative review of the project plans with the goal of finding efficiencies. We analyze the design and may propose alternative materials, construction methods, or minor design tweaks that can reduce costs or shorten timelines without sacrificing structural integrity or aesthetic goals. This is a proactive partnership we undertake with our clients and their design teams to deliver the best possible value.
Can you handle the excavation and site prep for the wall?
Yes, absolutely. We are a full-service heavy civil contractor. Our ability to perform the excavation for retaining walls, site prep, backfilling, and final grading with our own team and extensive equipment fleet is a key advantage. This integrated approach ensures a seamless, efficient process and eliminates the coordination headaches of dealing with multiple subcontractors.
What areas in Oregon and Washington do you service?
We serve the greater Portland metro area and Southwest Washington. This includes key commercial and residential development hubs like Portland, Beaverton, Hillsboro, Gresham, Tigard, and Lake Oswego in Oregon, as well as Vancouver, Camas, Washougal, and Kelso in Washington. Our team is equipped to handle projects throughout this wide service area.
What information do you need to provide a bid for commercial retaining wall construction?
To provide an accurate bid, we typically need a complete set of civil plans, a geotechnical report, and project specifications. The more detail we have about site access, project timelines, soil conditions, and wall design (height, length, materials), the more precise and competitive our bid will be.
Are you licensed and insured for work in both Oregon and Washington?
Yes, we are fully licensed, bonded, and insured to operate in both states, providing our clients with complete peace of mind. Our license numbers are Oregon CCB 217133 and Washington LEGAC6I856KA. We are also proud to be a certified Service-Disabled Veteran-Owned Small Business (SDVOSB).
