Free Fill Dirt in Portland, OR

Surplus fill dirt in the Portland metro originates from residential and commercial excavations, utility trenching, road grading, and land-clearing projects spread across the east side, the Beaverton corridor, and the Clackamas County fringe. Every foundation dig, sewer lateral replacement, and site prep job moves material that has to go somewhere, and contractors who cannot find a nearby receiver often pay to haul it to a disposal site.

Posting available loads on a marketplace like DirtMatch turns that disposal cost into a matched connection, reducing haul-off fees and eliminating the risk of illegal dumping fines. Listing volume spikes during the spring and summer dry season when site work accelerates across the metro, though wet-season excavations continue to generate material year-round. Scheduling pickup during those wetter months requires more coordination, but the supply is still there for contractors and homeowners willing to plan around Portland's weather patterns.

A standard tandem-axle dump truck carries roughly 10 to 14 loose cubic yards. Because excavated soil swells approximately 20 to 30 percent from its bank state when dug, contractors need to convert between bank cubic yards and loose cubic yards before quoting truck counts or committing to accept a load. Ordering the wrong number of trucks because of a volume conversion error wastes driver hours and fuel on both ends of the haul.

Portland's urban street network adds planning complexity. Bridge weight limits on Willamette crossings, neighborhood permit requirements for staging trucks on public right-of-way, and tight residential access points all affect delivery feasibility. Pros should confirm site access, truck clearance, and any street-use permit requirements before agreeing to a drop. Matching a donor site to a receiver site within a short haul radius is the most effective way to cut the largest variable cost in moving material: fuel and driver time.

• Convert volumes first: bank cubic yards multiplied by roughly 1.20 to 1.30 gives loose cubic yards for truck loading.
• Confirm bridge and road weight limits for any route crossing the Willamette or using posted weight-restricted streets.
• Check street-use permit requirements with the City of Portland Bureau of Transportation before staging trucks on public ROW.
• Verify site access: driveway width, overhead clearance, and turnaround space for a full tandem-axle truck.

Excavators and grading contractors can list surplus loads by specifying the material type, estimated volume in loose cubic yards, the load-out window, and any site access constraints. Providing accurate details upfront prevents wasted site visits and mismatched loads. Clean fill is soil free of organics, debris, and contaminants, used to raise grade in non-load-bearing areas. Structural or select fill is engineered and compacted in lifts to support foundations and pavements, and it typically requires compaction testing documentation. Listing the correct classification from the start sets accurate expectations for anyone claiming the material.

A complete listing saves time for both the donor and the receiver. The more specific you are about load-out dates and truck access, the faster a qualified match can confirm pickup and get the material off your site.

• Material type: clean fill, clay, sandy loam, mixed, or structural fill.
• Volume: estimated loose cubic yards available.
• Load-out window: specific dates or a date range when the site is accessible.
• Truck access: driveway dimensions, weight limits, and any overhead obstructions.
• Soil history: source project type and address so receivers can assess contamination risk.

Both homeowners and contractors should visually inspect any load before accepting it. Look for construction rubble, asphalt chunks, concrete fines mixed into the soil, and organic material such as roots, sod, or decomposing wood. Any of those disqualify the material as clean fill. Clean fill is soil free of organics, debris, and contaminants; it is appropriate for raising grade in non-load-bearing areas. Structural or select fill requires compaction documentation and is a different product entirely.

Ask the donor for the source address and project type before committing. Fill from a residential yard regrading job carries lower contamination risk than fill from a commercial redevelopment or industrial site where the soil history is less certain. Oregon DEQ has jurisdiction over contaminated soil disposal and reuse in Oregon; if a load has uncertain origin, consult DEQ guidance directly rather than relying on a visual inspection alone.

• Strong or chemical odor from the material.
• Discoloration in streaks or patches, especially dark staining.
• Visible trash, glass, metal, or construction debris mixed into the soil.
• Concrete fines or asphalt chunks blended with the dirt.
• Unknown commercial or industrial origin with no verifiable source address.
• Organic material: roots, sod, or decomposing plant matter throughout the load.

Free fill dirt covers a range of practical residential projects. The most common uses in the Portland area include regrading low spots that collect standing water, building up yard areas along foundation perimeters to encourage positive drainage away from the house, filling erosion channels on sloped lots, and creating level pads for sheds, garden structures, or patios. Fill dirt is also used as a base layer beneath raised garden beds and along driveway edges where soil has settled or washed away.

Free fill dirt is not the same as topsoil or garden soil. Homeowners planning to grow grass or plants on a filled area should plan to cap the fill with a layer of quality topsoil or compost after grading is complete. Even when the dirt itself is free, realistic budgeting should account for delivery or truck rental, spreading labor, and compaction if the project requires a stable base.

• Yard leveling and low-spot filling.
• Foundation perimeter grading for positive drainage.
• Raised garden bed base layer (cap with topsoil before planting).
• Driveway edge fill where soil has settled.
• Slope stabilization followed by seeding or erosion-control matting.

Portland's wet season runs roughly October through April. Placing or receiving fill during sustained rainfall creates compaction problems, increases erosion risk, and can produce muddy conditions that affect neighboring properties and local stormwater systems. Wet soil is also harder to compact properly, which matters for any fill placement that needs to support a structure or a stable surface later.

The City of Portland and Oregon DEQ both have stormwater and erosion control requirements that apply to disturbed soil on construction and grading sites. Property owners and contractors should check current city erosion control standards and DEQ guidance directly before scheduling fill placement during the rainy season. The information on this page is not a substitute for reviewing those requirements with the relevant agencies.

From a practical standpoint, the window from late May through September offers the most reliable dry conditions for load-out, delivery, and compaction across the Portland metro. DirtMatch listings often reflect this seasonality, with higher supply availability in spring as site work ramps up across the region.

• Check a multi-day forecast before scheduling delivery or pickup.
• Confirm the receiving site has adequate drainage so trucks do not get stuck.
• Have erosion control materials on hand: straw wattles, silt fence, or erosion-control matting.
• Verify whether a street-use permit is required if trucks will stage on public right-of-way.
• Plan compaction for a dry window, even if delivery happens earlier in the season.