Your Premier Excavation Contractor in Lake Oswego, OR
Four generations of experience delivering reliable sitework solutions for Lake Oswego developers and commercial projects.
- Fully Licensed & Insured in Oregon (CCB #217133)
- In-House Fleet of 150+ Units for Projects of Any Scale
- Free, Transparent Estimates & Value Engineering on Every Project
Trusted by Lake Oswego Developers for
Commitment and Quality
Legacy 6 Inc. is more than just a contractor; we are a fourth-generation, family-owned heavy civil partner dedicated to building lasting relationships throughout the Pacific Northwest. Our remarkable 80%+ repeat business rate stands as a powerful testament to our unwavering commitment to client success. We approach every project in Lake Oswego with a unique owner’s perspective, focusing on proactive communication and insightful problem-solving to mitigate risks before they become costly delays. As a certified Service-Disabled Veteran-Owned Small Business (SDVOSB), we infuse a level of discipline, integrity, and structured execution into every job site. This ensures that your project’s objectives are met with exceptional precision and professionalism, providing the peace of mind that comes from working with a team that values partnership as much as performance.
Comprehensive Sitework and Excavation Services
in Lake Oswego
From initial land clearing for luxury estates to final grading for commercial centers, Legacy 6 Inc. provides a complete suite of heavy civil services tailored for residential and commercial development in Lake Oswego. Our highly experienced team, backed by an extensive in-house fleet of over 150 pieces of equipment, is equipped to manage projects of all sizes and complexities. We guarantee seamless, efficient execution from the ground-breaking ceremony to the final site turnover, ensuring your project is built on a solid foundation.
Excavation & Grading
As the leading excavation contractor in Lake Oswego, OR, we deliver precise and reliable earthwork solutions essential for the success of any construction project. Our services are the bedrock of development, covering everything from bulk excavation for multi-lot subdivisions to meticulous grading for commercial building pads and parking lots. We understand that proper sitework and grading in Lake Oswego are critical for establishing a stable, properly drained foundation. Our expert operators utilize advanced GPS technology and decades of regional experience to sculpt the land according to exact engineering specifications, ensuring optimal site preparedness for vertical construction and long-term structural integrity.
Demolition Services
Legacy 6 Inc. provides comprehensive and safe demolition services in Lake Oswego for both residential and commercial structures. Whether removing an outdated home to make way for a new luxury residence or clearing a commercial building for redevelopment, our process is defined by safety, efficiency, and environmental responsibility. We meticulously plan each project to minimize impact on neighboring properties and the community. Our services encompass complete structural demolition, systematic debris removal and recycling, and thorough site preparation for your next phase of construction. This includes critical related services like professional septic and well abandonment, ensuring the land is clear, safe, and fully ready for its new purpose.
Underground Utilities
Our specialized crews are experts in the installation, repair, and maintenance of underground utilities in Lake Oswego, OR. We possess an in-depth, practical understanding of local municipal codes, soil conditions, and the unique challenges of working within established neighborhoods. We expertly install complex networks of storm drains, sanitary sewers, and water lines required for modern residential and commercial developments. Whether it’s a new installation for a subdivision or a critical repair to an existing main, we manage every aspect of the project with precision, ensuring reliable, long-lasting infrastructure that serves the community for decades to come.
Land Clearing & Site Preparation
Preparing your Lake Oswego property for development begins with our professional land clearing services. We transform raw, overgrown land into a clean, construction-ready site, setting the stage for efficient project execution. Our crews efficiently remove trees, stumps, underbrush, and other vegetation while carefully preserving designated trees and respecting property boundaries. We handle all aspects of the process, from initial clearing and grubbing to hauling and disposal of organic debris, ensuring your site is perfectly prepared for the subsequent phases of excavation and grading.
Retaining Wall Construction
Lake Oswego’s beautiful and varied topography often requires engineered solutions to manage slopes and prevent erosion. We construct durable, functional, and aesthetically pleasing retaining walls designed to meet these challenges. Our team has extensive experience building structural retaining walls that provide essential support for building pads, driveways, and landscaped areas. Using a variety of materials and proven construction techniques, we deliver walls that not only ensure the stability and usability of your property but also enhance its overall value and appearance.
Road Construction & Trucking
An efficient project depends on timely logistics. Our in-house trucking fleet and road construction capabilities are central to keeping your Lake Oswego project on schedule and on budget. With a diverse fleet of Super Solos, Truck and Pups, and Lowboys, we manage all material and equipment transport internally, eliminating reliance on third-party contractors and preventing delays. We construct durable access roads for developing sites, prepare subgrades, and lay aggregate for new parking lots and private roadways, providing a complete, integrated solution for all your site access and material management needs.
Our Heavy Civil Project Experience in Lake Oswego
Our portfolio is filled with projects that showcase our expertise in serving the specific needs of the Lake Oswego community. We have a long and successful history of preparing sites for high-end custom homes, developing master-planned residential subdivisions, clearing land for multi-family apartment complexes, and laying the essential groundwork for new commercial and retail centers.
Our deep understanding of the local landscape—from the unique soil compositions in the hillsides to the sensitive environmental considerations along the waterfront—allows us to proactively anticipate challenges and engineer effective solutions. We are well-versed in the City of Lake Oswego’s rigorous building codes, neighborhood covenants, and community expectations, ensuring every project proceeds smoothly and professionally.
Commercial Sitework
- Location: Lake Oswego, OR
- Contractor: Legacy 6, Inc.
Project Scope:
- Site Preparation & Land Clearing
- Demolition of Existing Structures
- Septic & Well Abandonment (if applicable)
- Debris Removal & Site Clean-Up
- Safety & Environmental Compliance
Project Details:
Legacy 6, Inc. recently completed a Commercial Sitework & Demolition project in Lake Oswego, OR, preparing a large property for redevelopment. The work involved clearing dense vegetation, demolishing aging structures, disconnecting utilities, and removing debris to deliver a safe, build-ready site. Despite challenges such as limited site access, strict county permitting requirements, and the discovery of hidden underground features, Legacy 6 successfully managed the project.
Underground Utilities
- Location: Lake Oswego, OR
- Contractor: Legacy 6, Inc.
Services Rendered:
- Excavation & Grading
- Utility Installation
- Erosion & Drainage Control
- Material Hauling & Import/Export
- Compaction & Stabilization
Project Details:
Legacy 6, Inc. successfully executed a Underground Utilities & Excavation project in Lake Oswego, OR, transforming raw land into a fully prepared site for commercial development. The team handled excavation, grading, underground utilities, and erosion control with precision, overcoming soil and drainage challenges to deliver a safe, compliant, and construction-ready foundation for future builds.
What Our Lake Oswego Clients Say
Partner with Lake Oswego's Heavy Civil Experts
Your Lake Oswego construction project deserves a partner with a proven legacy of excellence and integrity. With our comprehensive in-house services, innovative value engineering mindset, and an uncompromising commitment to safety and communication, Legacy 6 Inc. is ready to lay the groundwork for your success.
We have the team, the fleet, and the four generations of experience to ensure your project starts on solid ground. Let’s discuss how our expertise can bring
tangible value and predictable results to your next development.
Frequently Asked Questions About
Lake Oswego Sitework
Do you handle the necessary permits for excavation and sitework in Lake Oswego?
While the developer or general contractor is typically the party responsible for securing permits, we function as a key partner in this process. We work closely with your team to provide all necessary technical documentation, site plans, and information related to our scope of work. Our extensive experience means we are highly familiar with the specific permitting requirements and inspection processes for excavation and sitework in Lake Oswego and Clackamas County, which helps streamline approvals and avoid delays.
What types of projects are you equipped to handle in Lake Oswego?
Our fleet and team are equipped to handle a wide spectrum of residential and commercial projects. This includes sitework for luxury custom homes on challenging hillside lots, earthwork and utility installation for multi-lot subdivisions, site preparation for apartment complexes, and full site development for commercial retail centers and office buildings. Our comprehensive capabilities in demolition services, sitework and grading in Lake Oswego make us a versatile and reliable contractor for nearly any project that requires moving earth.
How does your team handle the hilly terrain and soil conditions common in Lake Oswego?
Our four generations of experience in the Pacific Northwest have given us an invaluable, in-depth understanding of the region’s geology. We are intimately familiar with the challenging clay soils and steep grades common in Lake Oswego. We leverage this knowledge to implement precise grading techniques, design and construct stable retaining walls, and engineer effective, lasting solutions for storm drainage and erosion control that are specifically tailored to the area’s unique topographical and geotechnical challenges.
What is 'value engineering' and how does it benefit my project?
Value engineering is our proactive process of analyzing a project’s civil plans to identify potential opportunities for cost savings, schedule acceleration, or quality improvements. It’s not an extra service; it’s part of our partnership approach. For instance, on a Lake Oswego site, we might identify a more efficient way to balance cut-and-fill materials to reduce off-haul expenses, or we might suggest a minor adjustment to a utility layout that shortens the installation timeline. This process leverages our experience to enhance project value without ever compromising on quality or design intent.
Do you offer underground utilities installation as a standalone service?
Yes, we absolutely do. While we often perform utility work as part of a comprehensive site development package, we can provide expert installation of underground utilities in Lake Oswego, OR, as a standalone service. Our crews are fully qualified and experienced in installing new storm, sewer, and water lines from the main to the building, as well as performing targeted maintenance, repairs, and replacements on existing systems for both residential and commercial properties.
