Excavation Contractor in Forest Grove, OR

Forest Grove is the largest town on the western edge of our service area and, for an excavation crew, the most varied ground we work. Hillsboro Excavation Co. runs jobs here regularly — it is a straight run west on Tualatin Valley Highway from our base, past Cornelius, about 25 miles from downtown Portland at the western edge of the Portland metro area.

What separates Forest Grove from the rest of the corridor is water. The city covers 5.88 square miles, and unlike Cornelius, Banks, or North Plains — which the census records as entirely land — roughly 0.14 square mile of Forest Grove is surface water. That is a small number on paper and a large one on a job site. Where there is mapped water there are drainage ways, seasonal high water, and setback rules, and excavation near any of it is a different job than digging on a dry inland lot.

Old Town, Old Ground, Old Infrastructure

Forest Grove is one of the oldest settlements in the Tualatin Valley. The Atfalati band of the Kalapuya lived on these plains long before Euro-American settlement; Alvin T. and Abigail Smith arrived over the Oregon Trail in 1841 to a place then called West Tualatin Plain, and the town was platted in 1850. It grew into a farm town and is now largely a commuter town for the Portland metro.

That long history is the practical fact that shapes our work here. Neighborhoods laid out generations ago have utility runs that are older, shallower, and less accurately mapped than anything in a modern subdivision. Mature trees — Forest Grove is home to one of the largest Giant Sequoias in Oregon — mean root systems that have had a century to spread under lawns, driveways, and service lines. When we trench an older Forest Grove property we treat the locate ticket as the starting point rather than the final word, and we pothole by hand where the drawings and the dirt disagree.

Digging near water

On properties near the mapped waterways, three things change: the water table sits higher for more of the year, the soil stays plastic longer into spring, and the permitting picture gets stricter because runoff has somewhere to go. We plan those jobs around the season instead of forcing them, and we build erosion control to hold up under real winter flow, not just to satisfy a checklist on the day of inspection.

Excavation Work We Do Most in Forest Grove

Forest Grove generates a broader mix of work than the smaller towns west of us, because it has both established in-town neighborhoods and rural acreage at its edges:

• Drainage and French drains — the dominant call, and more urgent here than most of the corridor given the high seasonal water table.
• Utility trenching on older properties, where existing lines are frequently not where the map says they are.
• Site preparation for additions, ADUs, shops, and infill builds on established lots.
• Land clearing on the wooded and rural parcels toward the city’s western and southern edges.
• Grading and leveling to establish positive drainage on lots that were graded to a different standard decades ago, or never properly graded at all.
• Foundation excavation where the water table demands proper drainage and backfill rather than a standard dig.

Older Forest Grove properties frequently need two of these at once — a trenching job that turns out to need drainage, or a site prep that uncovers a failed grade from decades ago. We scope the whole picture rather than quoting the one piece you called about. See our full range of excavation services.

Permits and Erosion Control in Forest Grove

All of this is handled by the same Hillsboro excavation contractor crew year-round. Forest Grove sits in Washington County, so the framework is the one we work under daily: city and county permitting for grading and utility work, Clean Water Services erosion-control requirements on ground-disturbing sites, and an 811 locate before any dig. On properties near mapped water, expect erosion control to be scrutinized more closely than on a dry inland lot — which is exactly why we install it properly the first time instead of reacting to a red tag.

Excavation Services We Provide in Forest Grove

Forest Grove spans established in-town neighborhoods and rural acreage, so the work varies more here than anywhere west of Hillsboro. Each excavation service below covers what the job involves and what drives its price.

Specialist Excavation Work in Forest Grove

Forest Grove has mapped surface water and century-old properties, which changes two jobs enough to warrant their own pages. For the rest, see our Hillsboro excavation overview:

Older Forest Grove properties often need more than one of these at once. Our excavation crew scopes the whole picture rather than quoting one piece.

Older Forest Grove properties often need more than one of these at once. Our excavation crew scopes the whole picture rather than quoting one piece.

All Forest Grove services · How we scope a job · Start from the homepage · Describe the whole project

Frequently Asked Questions