Grading & Leveling in Hillsboro, OR

Grading and leveling in Hillsboro is what turns rough, uneven, or poorly draining ground into a surface that works — a level pad, a driveway that sheds water, a yard that drains away from the house instead of toward it. Hillsboro Excavation Co. shapes grade to a plan across residential and commercial sites in Hillsboro and Washington County, holding elevation within a tenth of a foot where the job calls for it. Good grading is invisible when it's done right and expensive when it's done wrong.

In the Willamette Valley, grade is really about water. Hillsboro's flat spots and clay soils mean water sits wherever the ground lets it, and the difference between a dry yard and a flooded crawl space is often an inch of fall in the right direction. We grade positive drainage into every site — away from foundations, toward swales and outfalls — so the rain that falls here nine months a year has somewhere to go.

Our Hillsboro Grading and Leveling Services

Hillsboro Excavation Co. handles grading from a quick yard level to a full site cut to plan:

• Rough grading — moving and shaping soil to get a site close to its target elevations and contours.
• Finish grading — the final precise pass that holds grade tight for pads, driveways, and landscaping.
• Drainage grading — shaping slopes, swales, and positive fall so water runs off the way it should.
• Driveway and pad grading — building a crowned, well-drained base for gravel, concrete, or asphalt.
• Yard leveling — smoothing out lumpy, rutted, or settled ground into a usable, mowable surface.
• Laser and grade-stake work — hitting plan elevations accurately with proper layout, not eyeballing it.

Grading for Drainage in the Willamette Valley

Around Hillsboro, a level-looking yard that drains the wrong way is a problem waiting for winter. We've regraded sites from settled lots in established neighborhoods to new pads out on rural acreage, and the constant is water management. We set positive slope away from structures, cut swales to carry runoff to a legal outfall, and compact as we go so the grade holds through a wet season instead of settling into new low spots. Where the clay won't drain at all, we tie the grading into a drainage system so the two work together.

Grade that holds

Grading isn't just shaping dirt once. Loose fill settles, and uncompacted grade slumps the first winter. We compact fill in lifts as we build grade, so a driveway base or pad stays where we put it. That's the difference between a finish grade that lasts and one you're calling someone back to fix.

Grading the Level Ground of the Tualatin Valley

People assume Hillsboro's flat terrain makes grading easy. It's the opposite. At about 194 feet of elevation on the floor of the Tualatin Valley, the ground here has so little natural fall that water has nowhere obvious to go — which is why intentional grade is what keeps a property dry. On the flat farm ground being built out in South Hillsboro and Witch Hazel Village, and on the older lots near Downtown where the blocks run just 400 feet, we've had to build fall into ground that started dead level. A quarter-inch per foot that you'd never notice by eye is the difference between a yard that drains to Dawson Creek and one that ponds against your foundation.

The valley's agricultural past left a lot of Hillsboro sitting on tilled, settled, and reworked ground that doesn't grade uniformly. We shoot elevations across the whole site, account for the low corners and old field contours, and cut grade that carries water toward a real outfall — a swale, a ditch, or a creek — rather than just smoothing the surface and hoping.

How Much Does Grading Cost in Hillsboro, OR?

Most residential grading projects in Hillsboro run $1,200 to $5,500, depending on how much dirt has to move, how tight the finish tolerance is, and access for equipment. Grading is often priced by the hour at about $110 to $190 per hour for an excavator or skid steer with an operator, or by the square foot for finish grading. Imported fill or rock, if the site needs it, runs roughly $35 to $60 per ton delivered and placed. Below are typical ranges across Washington County.

Permits and Erosion Control

Grading that moves significant soil in Hillsboro usually needs a grading permit from the City of Hillsboro or Washington County, and Clean Water Services erosion-control rules apply once ground is disturbed. Hillsboro Excavation Co. pulls the permits your job needs and sets up erosion control so runoff doesn't carry your site into the storm drain. We keep the paperwork and the inspection clean so a simple grading job stays simple.

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