Tigard Excavation Contractor

Experienced | Local | Excavation Company

Tigard straddles the Tualatin Valley floor and the slopes of Bull Mountain, giving this Washington County city two distinct excavation personalities. The valley floor is defined by heavy Tualatin Valley clay, the sticky, water-retentive soil that makes construction in this part of the metro notoriously challenging. Bull Mountain adds weathered basalt and steep slopes to the mix, creating a different set of excavation demands on its flanks. Prodan Construction serves both zones across Tigard, bringing the right equipment and soil-management techniques to handle everything from soggy clay lots along Fanno Creek to rocky hillside parcels on Bull Mountain.

Digging Down and Building Up

Is your Tigard building project delayed because the heavy clay soil is too wet to work and your schedule keeps slipping? Does your Bull Mountain home need a retaining wall to manage the steep grade in your yard? Are you developing property in the Tigard Triangle and need efficient site preparation for a mixed-use project? Has your Tigard home experienced foundation settling or basement moisture because the clay soil retains water against your foundation? Do you need a utility trench cut through Tigard’s stubborn clay for a service upgrade or new connection?

No matter your Tigard excavation project, Prodan Construction has the clay-soil expertise and equipment to deliver results in Washington County’s challenging ground conditions. We serve Tigard from Bull Mountain to Cook Park, from the Tigard Triangle to the residential neighborhoods along Scholls Ferry Road, and we understand the seasonal timing and soil management strategies that successful Tigard excavation requires.

Landscape Grading, Sloping, and Site Preparation

Grading in Tigard’s Tualatin Valley clay is all about timing and technique. This soil is unworkable when saturated in winter and nearly as difficult when baked hard in summer, creating a narrow window of optimal conditions that experienced contractors know how to exploit. Our grading crews schedule Tigard projects for the best soil moisture conditions when possible, and when we must work outside that window, we use specialized techniques to manage the clay. We grade level building pads in the valley floor, create driveway access on Bull Mountain’s slopes, and prepare the large-scale sites that Tigard’s aggressive housing production goals demand in the Tigard Triangle and along the 99W corridor.

Septic Tank and Field Excavation

Most Tigard properties connect to the city sewer system, but some larger lots on the periphery and in unincorporated areas near Metzger still use septic systems. Tigard’s clay soils create significant challenges for septic drain field function because clay restricts water movement and reduces percolation rates. Prodan Construction installs and replaces septic systems in these conditions, working with engineers to design systems that overcome the clay’s limitations. We excavate with precision to ensure every drain field component sits at the correct depth and slope for maximum function in Tigard’s heavy soil.

Trenching Contractor

Tigard’s mix of established neighborhoods and new development creates steady demand for utility trenching. We cut through the clay to install water, sewer, power, and communication lines for new construction and replace aging utilities in Tigard’s older neighborhoods. Tigard’s clay makes trenching physically demanding because the material sticks to everything when wet and requires heavy force when dry. Our trenching crews have the equipment and experience to work productively in these conditions, and we restore all trench surfaces to city standards with proper compaction that prevents future settling.

Excavating Foundations

Foundation excavation in Tigard means managing clay. The Tualatin Valley clay that underlies most of the city can expand when wet and shrink when dry, creating soil movement that affects foundations. Prodan Construction excavates Tigard foundations with proper overdig to allow for drainage material, ensures subgrade compaction meets engineering specifications, and works with your builder to manage soil moisture during the foundation pour. On Bull Mountain, conditions shift to weathered basalt that provides better bearing capacity but requires rock-breaking equipment to excavate. We handle both Tigard foundation conditions seamlessly.

Property Cleanup

Tigard’s ongoing redevelopment, particularly in the Tigard Triangle and along the 99W corridor, creates demand for property cleanup and site preparation. Our crews remove old structures, foundations, buried utilities, and debris from Tigard redevelopment sites, preparing them for new construction. We also clean up residential Tigard properties, removing old concrete, stumps, and accumulated material to create clean, usable space. Every Tigard cleanup project ends with a properly graded site ready for immediate construction or landscaping.

Retaining Walls

Bull Mountain creates much of Tigard’s retaining wall demand, as the steep slopes on the mountain’s flanks require walls to manage grade changes for driveways, building pads, and usable yards. Our retaining wall excavation on Bull Mountain cuts through weathered basalt to create stable foundations, while our valley-floor wall work focuses on managing the clay that can exert significant lateral pressure against walls when saturated. We install drainage behind every Tigard retaining wall because the clay soil’s water retention makes drainage absolutely essential for wall longevity. See our retaining wall construction approach and how we build for Tigard’s dual-terrain conditions.

Specialty Excavation Projects

Tigard’s mix of Bull Mountain properties and valley-floor lots creates opportunities for diverse excavation projects. Here are ideas for Tigard property owners:

• Excavating a level patio and fire pit area on a sloped Bull Mountain lot
• Creating a rain garden or stormwater management feature on a Tigard clay lot
• Digging for an in-ground spa or hot tub installation with proper drainage in clay soil
• Grading a level backyard sports court or play area on a gently sloped Tigard property
• Excavating for a large detached garage or workshop foundation near Cook Park
• Building terraced planting beds with stone walls on a Bull Mountain hillside
• Preparing a gravel parking area for a home office or small Tigard business

Tigard’s clay soil challenges and Bull Mountain’s rocky slopes do not intimidate Prodan Construction. We have the equipment, the technique, and the patience to deliver excellent excavation results anywhere in Tigard. Share your project ideas with us and let us show you what is possible.

Residential and Commercial Excavation in Tigard

Tigard homeowners trust Prodan Construction for residential excavation because we understand the specific frustrations of building in clay soil. We time our work to manage moisture conditions, protect your Tigard property from the mess that wet clay creates, and deliver finished grades that drain properly to protect your home long-term. Our residential excavation services cover the full range of Tigard homeowner needs, from small drainage projects to complete site preparation for new construction. Bull Mountain homeowners appreciate our steep-terrain capability, and valley-floor homeowners value our clay-soil expertise.

Tigard’s commercial excavation needs are growing, driven by the Tigard Triangle redevelopment, South Tigard growth along 99W, and downtown revitalization efforts. Prodan Construction provides commercial site preparation, utility installation, and earthwork for Tigard’s commercial and mixed-use projects. We work efficiently in the clay soil conditions that can delay less experienced contractors, and we coordinate with the city’s development team to keep commercial projects on schedule. Our commercial excavation experience in Washington County includes projects ranging from small retail pads to large mixed-use development sites.

Tigard homeowners new to excavation projects get straightforward guidance from Prodan Construction. We evaluate your property’s specific soil conditions, explain the challenges that Tigard’s clay presents, and provide a realistic estimate that accounts for seasonal timing and soil management. Our detailed proposals give you confidence in the cost and timeline, and we keep you informed throughout the project as conditions develop. Tigard homeowners appreciate our honesty about what clay soil demands and our commitment to working through those demands professionally.

Tigard’s dual-terrain landscape, with Bull Mountain rising above the clay-covered valley floor, creates some of the most varied excavation conditions in Washington County. Prodan Construction handles both environments with equal expertise, and Tigard property owners trust us to deliver quality results regardless of where their property sits on this geological spectrum.

Equipped and Local Tigard Excavation Experience

Our Tigard equipment fleet addresses both clay and rock conditions. We maintain excavators with heavy-duty buckets that cut through compacted clay, rock-breaking attachments for Bull Mountain’s basalt, and wide-track machines that distribute weight across soft clay surfaces without sinking. Our dump trucks haul heavy clay material efficiently, and our grading equipment achieves precise finishes even in soil that fights every pass. Our operators understand the timing and technique that Tigard’s clay demands, and they bring that expertise to every project in this community.

Contact Prodan Construction at (503) 773-6949 or through our website to schedule your free Tigard excavation estimate. We will visit your property, evaluate the soil conditions and terrain, and deliver a detailed proposal tailored to your Tigard project. Whether you are on Bull Mountain, in the Tigard Triangle, or anywhere in between, Prodan Construction has the experience and equipment to handle your excavation needs. Tigard property owners value our honest pricing and dependable performance, and we look forward to earning your business.

Prodan Construction is Your Tigard Excavation Contractor

Don’t just take our word for it!