Premier Excavation Contractor in Portland, OR
Partnering with Portland's developers and builders for four generations to deliver on-time, on-budget sitework.
- Value Engineering Approach to Minimize Costs & Delays
- In-House Fleet of 150+ Units for Unmatched Project Control
- Fully Licensed, Insured & SDVOSB Certified (OR CCB 217133)
The Trusted Sitework Partner for Portland's
Leading Developers
Our reputation in the Portland area is built on a foundation of trust and performance. We are proud that over 80% of our projects come from repeat clients who value our commitment to communication, quality, and teamwork. We partner with Portland’s top general contractors and developers, treating every project as if it were our own. This partnership approach, combined with four generations of industry experience, allows us to anticipate challenges unique to the Portland market, from navigating dense urban infill projects to managing the region’s wet weather conditions. Our clients—professional, organized, and team-centered developers—choose us because they see us not as a subcontractor, but as an integral part of their project’s success.
Comprehensive Sitework and Excavation Services
in Portland
Legacy 6 Inc. is a full-service heavy civil contractor equipped to manage every phase of your Portland project. From initial land clearing and demolition to final grading and utility installation, our dedicated in-house team and extensive fleet ensure seamless execution and superior results. We have deep experience navigating the unique challenges of developing sites throughout the Portland metro area, whether it’s a tight lot in the Pearl District or a sprawling subdivision in the West Hills. Our integrated sitework services mean you have a single point of contact, ensuring clear communication and accountability from start to finish.
Commercial Sitework & Excavation
We prepare commercial sites across Portland for construction, from small retail pads to large industrial facilities up to 500,000 SF. Our commercial sitework and excavation services include mass excavation, building pad preparation, parking lot grading, and installation of all necessary underground utilities to keep your project on schedule. We understand the complexities of commercial development in Portland, including strict stormwater management requirements and the need for precise coordination with other trades. Our team of experienced project managers and superintendents leverages our in-house fleet of over 150 units to ensure that earthwork is performed efficiently, building pads are compacted to spec, and your site is ready for vertical construction without delay.
Residential Development Sitework
Our team specializes in preparing land for residential subdivisions and multi-family apartment complexes. We handle everything from bulk earthwork and road construction for 10 to 100-lot developments to the precise excavation and utility work required for dense urban housing projects in Portland’s unique neighborhoods. We partner with developers to bring new communities to life, understanding that the foundation of a successful residential project is expertly executed sitework. This includes careful grading to ensure proper drainage for every lot, constructing stable road bases, and installing reliable utility infrastructure for future homeowners.
Demolition Services in Portland
We provide safe, efficient, and compliant demolition services Portland developers can rely on. This includes structural demolition of existing buildings, foundation removal, and concrete breaking. Our crews are trained in the latest techniques to ensure safety and minimize impact on neighboring properties, a critical factor in Portland’s established communities. We manage all debris hauling and site preparation for the next phase of construction, ensuring a clean slate for your project. Our comprehensive approach also covers septic and well abandonment, handling all necessary documentation and procedures to meet local health and environmental regulations.
Land Clearing
Preparing a raw site for development in the Portland area requires careful planning and environmental consideration. We offer comprehensive land clearing services, including tree and brush removal, stump grinding, and site cleanup, setting the stage for successful sitework and grading. Our team works diligently to execute clearing plans that align with your development goals while adhering to Portland’s tree codes and environmental overlays. By clearing the way efficiently, we enable subsequent excavation and grading operations to proceed on schedule, providing a clean and accessible canvas for your project.
Underground Utilities Portland, OR
Our crews are experts in the new installation, maintenance, and repair of critical underground utilities. We have extensive experience working with Portland’s infrastructure, installing storm drainage, sanitary sewer lines, water mains, and utility conduits while coordinating with local authorities like the Bureau of Environmental Services (BES) to ensure full compliance. Properly installed underground utilities are the lifeblood of any development. We use modern equipment and proven methods to lay pipe at precise grades, make secure connections, and perform thorough testing, guaranteeing the long-term integrity and functionality of your site’s essential systems.
Precision Grading and Retaining Walls
Proper sitework and grading in Portland are critical for drainage and structural stability. We use advanced GPS technology for precise grading of building pads, roadways, and landscapes, ensuring your site meets all engineering specifications. Our expertise is particularly valuable in managing the varied topography of the Portland region, from the flatlands along the Columbia River to the steep slopes of the West Hills. We also construct engineered retaining walls, which are often essential for maximizing usable land and ensuring long-term site stability. Whether it’s a large structural wall for a commercial development or functional terracing for a residential subdivision, we build walls that are both durable and effective.
Featured Projects in the Portland Area
We have a proven track record of successful projects throughout Portland and its surrounding communities. Our portfolio showcases our ability to adapt to diverse site conditions and client needs, delivering quality results every time. Below are examples of our work.
Commercial Sitework
- Location: Portland, 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 project in Portland, 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: Portland, 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 project in Portland, 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 Portland Partners Are Saying
Frequently Asked Questions About
Portland Sitework
Are you familiar with Portland's permitting process for excavation and demolition?
Yes. Our project managers have extensive experience navigating the specific requirements of Portland’s Bureau of Development Services (BDS) and Bureau of Environmental Services (BES). We understand the intricacies of erosion control standards, tree preservation codes, and utility connection protocols for both excavation and demolition. We handle the necessary steps to ensure your project remains compliant with all local regulations, from initial site development permits to final sign-offs. This proactive management prevents costly delays and ensures a smooth process.
Can your team handle projects with tight site access in dense Portland neighborhoods like the Pearl District or Slabtown?
Absolutely. We specialize in projects on constrained urban sites where space is at a premium. Our approach involves meticulous pre-planning, which includes developing detailed logistics and traffic control plans. We select the right-sized equipment from our large and diverse fleet to maximize efficiency in confined areas. Our skilled operators are adept at maneuvering in tight quarters, and we coordinate our activities carefully to minimize disruption to traffic, local businesses, and residents in the surrounding community.
What is your safety protocol for projects near public spaces in Portland?
Safety is our highest priority, a non-negotiable part of our culture. Our comprehensive safety program meets and exceeds OSHA and L&I requirements. For projects in busy public areas, we implement strict site control measures, including secure fencing, clear signage, and designated entry/exit points. We develop and execute traffic management plans in coordination with city officials and require our crews to conduct weekly safety meetings and job safety inspections to address site-specific hazards. Our goal is a “Zero Accident Mindset” on every job, protecting our crew, other trades, and the public.
How does your 'Value Engineering' approach benefit my Portland development?
Our value engineering process is a core part of our partnership approach, offered at no extra charge. It leverages our four generations of local experience to identify cost and time-saving opportunities specific to your project. For a Portland development, this could mean optimizing a grading plan to balance earthwork on a hilly site, saving tens of thousands in off-haul costs. It might involve suggesting alternative backfill materials better suited to Portland’s clay-rich soils, or re-routing utilities to avoid costly conflicts with existing city infrastructure. This process turns potential problems into solutions before they impact your budget or schedule.
Do you provide sitework and grading in Portland suburbs like Beaverton, Tigard, and Gresham?
Yes, our service area covers the entire Portland metropolitan area and beyond. We regularly complete projects in Beaverton, Hillsboro, Gresham, Lake Oswego, Tigard, and Wilsonville. Our extensive in-house fleet of trucks and lowboys allows us to mobilize equipment and crews efficiently across the region. Whether your project is downtown or in a growing suburb, we bring the same level of expertise, resources, and commitment to every job site.
Start Your Portland Project with a Team You Can Trust
For four generations, our family has been committed to building more than just sites—we build lasting relationships. With our value engineering mindset, uncompromising safety standards, and a dedicated in-house team, Legacy 6 Inc. is ready to bring experience and integrity to your next project in Portland. We look at each job as if it were our own, focusing on over-communication and proactive solutions to deliver quality results on time and on budget. Let’s discuss how we can become a valuable partner in your project’s success.
Contact Details:
Company Name: Legacy 6 Inc.
Address: 511 NE 199TH ST Ridgefield, WA 98642
Phone: 360.690.5339
Licenses: OR CCB: 217133 | WA: LEGAC6I856KA | SDVOSB Certified
