Asphalt Driveway Cost in Ontario, Oregon: 2026 Price Guide

What Does an Asphalt Driveway Cost in Ontario?

Ontario sits in the far eastern corner of Oregon, on the Snake River across from Idaho and squarely in the Treasure Valley. It is the one Oregon city on Mountain Time, and its climate is unlike the western part of the state — hot, dry summers that regularly push past 95°F, and cold winters with hard freezes. Both extremes shape what an asphalt driveway costs here and how it needs to be built.

Ontario homeowners can expect pricing that varies with driveway size, base depth, removal of any existing surface, and slope. Industry sources have historically reported baseline ranges of $7 to $13 per square foot for a new asphalt driveway, though actual costs in the current market frequently run higher once removal, base rebuild, and the haul distance to far-eastern Oregon are factored in. Your real number depends on your site, which is why a measured quote beats any chart. For the statewide picture, see our guide on how much an asphalt driveway costs in Oregon.

Ontario Asphalt Driveway Prices: Detailed Breakdown

Industry baseline ranges shown below. Actual costs vary and may be significantly higher based on removal, base condition, slope, and current market conditions.

Driveway Size	Approx. Square Footage	Industry Baseline Range
1-car	400–600 sq ft	$3,000–$6,000
2-car	600–900 sq ft	$4,500–$9,000
3-car / long	900–1,400 sq ft	$6,800–$14,000

Per-square-foot pricing tends to drop slightly as the driveway gets larger because mobilization and setup costs spread across more area. Our driveway cost by size guide breaks down pricing by car count and square footage in more detail.

What's Included in a New Driveway Price

Cost Component	Typical Share of Project
Excavation and sub-grade prep	15–25%
Base rock (aggregate)	20–30%
Asphalt material and placement	35–45%
Grading, compaction, and finishing	10–20%

These shares shift based on how much excavation and base work your site needs. A flat lot with good soil costs less than a sloped or soft site that requires extra base.

Factors That Affect Driveway Cost in Ontario

Removal of an Existing Surface

If you are replacing an old driveway or paving over gravel, removal and disposal add to the cost. Tearing out failed asphalt or concrete and hauling it away is its own line item before any new paving begins.

Base Depth and Soil

The Treasure Valley's soils and its freeze-thaw winters mean base depth matters. A deeper, well-compacted aggregate base resists the heaving that comes when winter moisture freezes beneath the surface. Cutting corners on base rock to lower the upfront price is the most common reason a driveway fails early in Ontario's climate.

Slope and Drainage

Sloped driveways and sites that need regrading for drainage cost more because they take more labor and material. Proper grading keeps water moving off the surface, which matters in both the hot summer (to prevent ponding) and the cold winter (to prevent ice and freeze damage).

Haul Distance and Market Conditions

Ontario is one of the most remote cities in Oregon for paving contractors based in the western part of the state. Travel distance, fuel, and material haul can add to a quote compared with a Willamette Valley project. Local contractor availability and seasonal material pricing also move the final number.

Current Market Reality

The industry baseline ranges above reflect historically reported averages. In practice, actual driveway costs in Ontario and across Oregon frequently exceed these baselines, depending on:

• Removal scope — Tearing out and hauling old asphalt, concrete, or thick gravel adds cost before paving begins
• Base rebuild depth — Freeze-thaw soils in the Treasure Valley often need a deeper, more thoroughly compacted base
• Slope and drainage work — Regrading a site to shed water properly takes extra labor and material
• Material upgrades — Thicker surface courses for heavier vehicles cost more
• Market conditions — Contractor availability, fuel, and asphalt pricing fluctuate seasonally and year over year

Published ranges are a starting reference, not a budget target. Always get a site-specific quote based on your driveway's actual size and conditions.

How Ontario Compares to the Rest of Oregon

Driveway costs vary across Oregon with local market conditions, contractor availability, and travel distance. Ontario's remoteness from western Oregon paving crews can push quotes toward the higher end of the statewide range, while its hot, dry summers offer a long, reliable paving season. The most accurate way to compare is to request quotes from contractors who regularly serve Malheur County. If you are weighing materials, our asphalt vs. concrete driveway in Oregon guide covers the cost and climate trade-offs.

What Your Contractor Can't See Until Work Begins

Even an experienced crew encounters surprises once excavation starts:

• Soft or unstable sub-grade — Soil that looks fine on top may need correction underneath
• Inadequate existing base — Older driveways were often built on thin base rock
• Buried debris — Fill material and old patches can hide below the surface
• Drainage that needs reworking — Existing grades may have to change to keep water moving in both seasons

A thorough site assessment catches most of these before the quote is finalized, which is why a measured estimate is far more reliable than any industry average.

Get Your Ontario Asphalt Driveway Quote

Stop estimating from a chart — get an accurate quote based on your actual driveway size, soil, and slope. Cojo Excavation & Asphalt provides free, no-obligation estimates for Ontario and Treasure Valley homeowners. We measure your site, assess the base requirements, and deliver a transparent quote with no hidden fees.

Request a free driveway estimate — we respond within 24 hours.

View our completed driveway projects and learn more about our asphalt maintenance services. For the full picture on residential driveways across Oregon, start with our complete asphalt driveway guide for Oregon.