Expert Excavation Contractor in Tigard, OR

Four generations of heavy civil construction experience for your
Tigard project.

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Oregon and Washington

Your Trusted Partner for Civil Construction in Tigard

For decades, Legacy 6 Inc. has been a foundational partner for developers and builders throughout the Pacific Northwest. Our commitment to excellence is proven by our 80%+ repeat business rate—a testament to the relationships we build and the results we deliver. For projects in Tigard, from new subdivisions near Bull Mountain to commercial developments along Pacific Highway (99W), we bring unparalleled local knowledge and a massive in-house fleet. We understand the specific soil compositions, weather patterns, and municipal regulations that define construction in Washington County.

This local expertise allows us to be more than just a contractor; we are a dedicated partner invested in the success of your project. We approach every job with a team-first mentality and a focus on proactive communication. Our project managers and superintendents foresee potential challenges, from unforeseen ground conditions to logistical hurdles, and develop solutions before they become costly delays. By treating every project as if it were our own, we ensure it runs on time and on budget, building a foundation of trust that lasts long after the work is done.

Complete Sitework & Excavation Services in Tigard, OR

Legacy 6 offers a full suite of heavy civil construction services to meet the demands of any project in Tigard. Our in-house team of skilled operators, laborers, and project managers, combined with a company-owned fleet of over 150 units, allows us to maintain complete control over project timelines and quality. We are equipped to handle jobs of all sizes and complexity, from initial clearing and mass grading to final utility connections and road construction.

As a leading excavation contractor in Tigard, OR, we provide precise and efficient earthwork for residential and commercial sites. Our expert sitework and grading services lay the essential groundwork for successful, lasting construction. This includes creating stable building pads for large commercial centers, excavating foundations for multi-family apartment complexes, and performing mass grading for entire subdivision developments. We utilize advanced techniques and technology, including CAD-based planning, to ensure every cut and fill is accurate, optimizing the site for proper drainage and structural integrity. Our team focuses on balancing on-site soil to minimize the costly process of hauling materials off-site, delivering value and efficiency from the ground up.

We provide comprehensive and safe demolition services in Tigard for structures of all types and sizes. Our process is meticulous, beginning with a thorough site assessment and management of all necessary permits. We handle everything from residential teardowns to the demolition of large commercial or industrial buildings. Our services extend to complete site preparation, including safe land clearing of trees and vegetation, certified septic abandonment, and proper well abandonment. We manage the entire process with a steadfast commitment to safety and environmental standards, ensuring all debris is handled, sorted, and disposed of responsibly, preparing your property for its next phase of development.

Our specialized crews are experts in the installation, repair, and maintenance of underground utilities in Tigard, OR. We are the trusted partner for developers and municipalities needing reliable infrastructure for new residential subdivisions and commercial properties. Our scope of work includes the precise installation of storm drainage systems, sanitary sewer lines, and main water lines. We understand the critical importance of this unseen infrastructure. Using quality materials and adhering to stringent installation standards for trenching, bedding, and backfill compaction ensures that these vital systems function flawlessly for decades, preventing costly and disruptive future issues.

In the varied terrain of the Tigard area, retaining walls are often essential for maximizing usable land and ensuring long-term site stability. We construct durable and functional retaining walls engineered to manage soil erosion, prevent landslides, and create level ground on sloped properties. Our team has extensive experience building a variety of wall types with multiple materials, from large-scale structural walls for commercial developments to aesthetically integrated walls for residential communities. We handle the complete process, including the necessary excavation and the installation of critical drainage systems to ensure the wall’s longevity and performance.

The logistical success of any major sitework project depends on the timely movement of material and equipment. Legacy 6 eliminates uncertainty by managing all transportation with our extensive in-house trucking division. Our diverse fleet—which includes Super Solos, Truck and Pups, Transfers, Side Dumps, End Dumps, Lowboys, and Conveyor Trucks—ensures that our Tigard projects run smoothly and stay on schedule. Whether we are hauling away debris, bringing in aggregate for road base, or moving heavy machinery, our internal control over trucking provides reliability and efficiency that third-party services cannot match.

Handling Tigard's Commercial & Residential
Development Needs

Tigard’s continuous growth, from the developing Tigard Triangle to infill projects throughout the city, requires a contractor with proven experience in a diverse range of projects. While we maintain strict client confidentiality, our portfolio includes a depth of experience directly applicable to the key developments shaping the area. We are proficient in navigating the requirements of both large-scale and smaller, more complex sites.

Residential Subdivisions

We are a preferred partner for developers planning communities from 10 to 100 lots. Our comprehensive service covers every aspect of site development. We begin with land clearing and mass grading, followed by precise trenching for all underground utilities (water, sewer, storm). We then construct the road networks, from subgrade preparation to final paving, and perform the final grading on each individual lot, delivering a turnkey site ready for vertical construction.

Commercial Sitework

Our team has the capacity and expertise to prepare sites for commercial buildings ranging from 5,000 to 500,000 square feet. This work involves much more than moving dirt. We perform surgical excavation for complex foundations, grade expansive areas for large-scale parking lots with careful attention to drainage, and install all necessary underground infrastructure, including grease interceptors and complex storm-water management systems like detention vaults and bioswales, which are common requirements in the region.

Value Engineering

Our decades of experience in the Willamette Valley give us a unique perspective on Tigard projects. This is not an add-on service; it is a fundamental part of our partnership approach. When we review project plans, we look for opportunities to enhance value, proactively identifying potential issues with soil conditions, drainage, or site logistics. We often suggest alternative approaches or material choices that can save our clients significant time and money without compromising the quality or integrity of the final product.

Tigard Project Highlights

Commercial Sitework

Project Scope:

Project Details:

Legacy 6, Inc. recently completed a Commercial Sitework project in Tigard, 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

Services Rendered:

Project Details:

Legacy 6, Inc. successfully executed a Underground Utilities project in Tigard, 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.

Start Your Tigard Construction Project with Confidence

Get the peace of mind that comes from working with a fourth-generation, Service-Disabled Veteran-Owned Small Business (SDVOSB). Legacy 6 Inc. brings unmatched experience, integrity, and a genuine commitment to your project’s success. Let’s discuss how our team can deliver exceptional value and reliable results for your next development in Tigard.

Phone: 360.690.5339

Email: LT@legacy6inc.com

OR CCB: 217133

Frequently Asked Questions About
Sitework in Tigard, OR

As a full-service excavation contractor in Tigard, OR, we handle a wide and diverse range of projects. Our capabilities include large-scale residential work such as preparing land for new subdivisions and multi-family apartment complexes. We also excel in the commercial sector, preparing sites for retail centers, industrial buildings, and office parks. Our work covers everything from mass earthmoving and grading for entire sites to detailed excavation for building foundations, underground parking structures, and utility trenching.

Yes, absolutely. With four generations and decades of hands-on experience in the Portland metro area, our team is deeply familiar with the specific building codes, environmental regulations, and permitting processes for the City of Tigard and Washington County. We maintain strong working relationships with local authorities and ensure that all sitework, demolition, and utility installation is fully compliant with all municipal and regional standards, including those set by agencies like Clean Water Services (CWS).

Yes, our expertise covers the full lifecycle of underground utilities. We specialize in the complete installation of new utility systems for subdivisions and commercial sites, including storm, sewer, and water lines. Additionally, our experienced crews have the technical skill to work on existing infrastructure. We can locate, assess, repair, or fully replace aging or damaged utility lines as part of a site redevelopment, upgrade, or emergency maintenance project, ensuring minimal disruption and long-term reliability.

Our value engineering process is a core part of our service that directly benefits our clients’ bottom line. By leveraging our extensive local experience, we analyze your project’s civil plans from an owner’s perspective. We look for opportunities to increase efficiency, mitigate risks, and reduce costs without ever sacrificing quality. For a Tigard project, this could mean suggesting an alternative grading plan that balances cut-and-fill to eliminate expensive soil export, or recommending a different type of backfill material that offers better long-term compaction and is more cost-effective. This proactive, solutions-oriented approach helps prevent costly change orders and keeps the project on schedule.

While this page highlights our dedicated services for Tigard, our operational footprint covers the entire Portland metropolitan area and beyond into the Pacific Northwest. We regularly complete projects in neighboring communities such as Beaverton, Lake Oswego, Tualatin, Sherwood, and Wilsonville. Our services also extend throughout the greater Portland region and across the Columbia River into Southwest Washington, including Vancouver, Camas, and Washougal. Our large, mobile fleet allows us to efficiently serve a broad geographic area.

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