What Does Site Excavation Involve in Tualatin, OR?
Site excavation in Tualatin, OR covers the land clearing, grading, and digging that happens before a landscape, patio, or building goes in. Grover’s Landscape Services & Design has handled excavation across Tualatin’s flat, clay-heavy lots since 1995, using mini excavators, laser-set grades, and drainage built in from day one.
By Yuriy Cheshev, Owner · Last updated 11 August 2026
What Counts as Site Excavation Work?
Excavation is the physical groundwork stage. It happens before plants, pavers, or foundations, not after. In Tualatin, that typically means digging footings for a retaining wall, cutting a trench for drainage pipe, opening up a raw lot, or resetting the grade on a yard that no longer sheds water correctly.
As a land excavation contractor working the Tualatin Valley since 1995, we treat excavation as the step that decides whether everything built on top of it holds up. Skip it or rush it, and a beautiful patio or fresh sod job fails within a year. Tualatin’s flat terrain and clay-heavy soil make this step non-negotiable rather than optional. Water does not drain on its own here the way it does on a sloped Lake Oswego lot.
Most excavation calls in Tualatin fall into one of a few categories: standing water near the foundation, a raw lot that needs clearing before a build, a retaining wall or patio that needs proper footings, or a construction project where the site work was never scoped correctly. We walk the property first and tell you which of these applies before any equipment shows up.
How Much Does Site Excavation Cost in Tualatin, OR?
Giving a flat per-square-foot number without seeing the lot would not be honest, since two Tualatin properties on the same street can need very different work. Here are the typical 2026 ranges we see once scope and access are known.
Excavation Type | Typical 2026 Range | Notes |
Drainage or French drain excavation | $1,500 – $6,000 | Priced by linear footage and depth |
Patio, wall footing, or utility trench excavation | $1,000 – $4,500 | Scope tied to the hardscape or structure it supports |
Yard grading (regrade for drainage) | $2,500 – $8,000 | Clay soil removal and access drive the range |
Land clearing (overgrown residential lot) | $2,000 – $6,000 | Brush and blackberry removal, stump grinding, hauling |
Full site prep for new construction | $12,000 – $45,000+ | Clearing, grading, drainage, and utility coordination |
Three things move a Tualatin excavation quote up or down: how much material has to be hauled off or brought in, how tight the site access is, and whether the lot sits near a wetland or waterway, which adds permitting steps. The free site visit is where we pin the actual number down, in writing, before anything is scheduled.
Do You Need a Permit for Excavation in Tualatin?
Often, yes, and the answer depends on scope and location. The City of Tualatin has a dedicated Excavation & Grading Permit Application for site work that changes grade or moves significant material. Separately, the city requires an erosion control permit any time a project disturbs more than 500 square feet of soil.
Wetland proximity adds a second layer. Tualatin sits along the Tualatin River, Nyberg Creek, and Hedges Creek, and Oregon’s Removal-Fill Law requires a state permit from the Department of State Lands for most projects that move 50 cubic yards or more of material in a wetland or waterway. If your lot backs up to any of those, we check this before we ever break ground, not after a stop-work order arrives.
Grover’s pulls every required permit inside the project scope under Oregon CCB License #100592. If a competing quote never mentions permits, that is worth asking about before you sign.
How Long Does a Tualatin Excavation Project Take?
A targeted drainage repair usually wraps in a day or two. Land clearing on a typical residential lot runs three to seven days, depending on vegetation and how tight the access is. Full site prep ahead of new construction, covering clearing, rough grading, drainage, and final grade, typically takes two to four weeks depending on lot size and the weather that week.
Permit review adds time on top of the physical work, especially for anything near a wetland buffer or a retaining wall over four feet.
What Equipment Do We Use for Excavation in Tualatin?
Three decades of Willamette Valley site work taught us which equipment actually holds up on tight residential lots without tearing up the rest of the property:
- Mini excavators and compact track loaders, sized for Tualatin’s smaller residential lots and narrow side-yard access
- Laser levels and grade rods for a final grade set by instrument, not by eye
- Geotextile fabric laid under drainage systems to keep Tualatin’s clay fines out of the gravel bed
- Compacted fill placed in lifts, so the pad does not settle six months later under a new patio or driveway
We size the equipment to the lot. A mini excavator that fits through a side gate is the right call more often in Tualatin than the larger machines you would bring to a rural acreage.
Tualatin Neighborhoods and Site Conditions We Excavate For
Three decades working the Tualatin Valley means we have dug in most corners of the city, and the soil and site conditions shift block to block.
Nyberg Woods and Nyberg Rivers
These lots sit closest to the Tualatin River corridor. Excavation here means checking wetland buffers before digging and planning drainage that accounts for a naturally high water table.
Ibach, Byrom, and Sagert
Older streets with mature trees and established root systems. We dig around the root zone here rather than cutting through it, which protects the canopy and avoids a bigger repair bill later.
Bridgeport Village Corridor
A mix of commercial and attached residential development. Excavation for permeable paving sub-bases comes up often here, since managing stormwater at the commercial-residential interface is part of the site plan.
Downtown Tualatin and Older Lots
Established 1970s–1990s streets, sometimes with aging or undocumented utility lines. We hand-expose suspected utility runs before bringing in equipment on these properties.
Beyond Tualatin itself, we also excavate across Sherwood, Wilsonville, and the rest of our Tualatin service area. Excavation is also the first step behind most of our hardscape construction projects and any work that touches a wetland or protected buffer. Our site preparation and excavation overview covers the full range of what we handle, and finished projects sit in the gallery.
Frequently Asked Questions
How much does site excavation cost in Tualatin, OR?
It depends on scope, access, and how much material moves. Drainage and small footing digs often run $1,000–$6,000. Full pre-construction site prep runs $12,000 and up. We confirm the number in writing after a free site visit.
Do I need a permit for excavation in Tualatin?
Often. The city requires an excavation and grading permit for significant grade changes and an erosion control permit for any project disturbing more than 500 square feet of soil. Work near the Tualatin River, Nyberg Creek, or Hedges Creek can also trigger a state Department of State Lands removal-fill permit. We confirm requirements during the site walk.
What is involved in site excavation?
Land clearing, precise grading with laser levels, digging for footings, trenches, or ponds, integrating drainage as the site is shaped, and compacting fill in lifts so nothing settles later. Each step happens in a set order so the next trade inherits a clean, accurate site.
How long does site excavation take?
A drainage repair typically takes a day or two. Land clearing runs three to seven days. Full site prep for new construction usually runs two to four weeks, depending on lot size and weather.
What equipment is used for excavation?
Mini excavators and compact track loaders sized for residential access, laser levels and grade rods for accurate final grade, geotextile fabric under drainage systems, and compaction equipment for fill placed in lifts.
Know the Plan Before the Excavation Starts
Planning site excavation in Tualatin? Get a clear plan before the first yard of dirt moves.
Grover’s Landscape Services & Design will walk your property, assess the site, and provide a written excavation plan with clear pricing. No verbal estimates. No surprises after the equipment arrives.
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