Asphalt
Asphalt Driveway Cost in Hillsboro, Oregon: 2026 Price Guide
Cojo
May 30, 2026
7 min read
Hillsboro sits in the heart of Washington County on the west side of the Portland metro, and its ground and climate set the terms for what a lasting driveway costs. The Tualatin Valley floor is heavy with clay soil, and the region's long, wet season keeps that ground saturated for months. Clay holds water and shifts as it absorbs and releases moisture — which is exactly why base preparation and drainage carry so much weight in local driveway pricing.
For a new asphalt driveway in Hillsboro, industry baseline ranges have historically been reported around $3 to $7 per square foot for standard residential paving, though actual costs in the current market frequently run higher once base prep, removal, and slope work are factored in. A typical two-car driveway lands roughly in the $3,000 to $9,000 range at baseline, with larger or more complex projects going beyond that.
Your actual cost depends on driveway size, how much base work the clay soil requires, whether an old surface needs removing, and the grade of your lot.
Industry baseline ranges shown below. Actual costs vary and may be significantly higher based on base depth, soil conditions, slope, and current market conditions.
| Driveway Size | Approx. Square Feet | Industry Baseline Range |
|---|---|---|
| 1-car | 400–600 sq ft | $2,000–$5,000 |
| 2-car | 600–900 sq ft | $3,000–$9,000 |
| 3-car / extended | 900–1,400 sq ft | $5,000–$14,000+ |
Baseline industry ranges. Actual costs depend on local soil, access, and project scope.
| Component | Industry Baseline |
|---|---|
| Excavation & grading | $1–$3 per sq ft |
| Base rock (aggregate) | $1–$3 per sq ft |
| Asphalt surface (2–3 in.) | $2–$5 per sq ft |
| Old driveway removal | $1–$3 per sq ft |
The Tualatin Valley's clay expands when wet and contracts when dry. That movement stresses the asphalt above it. A driveway built for Hillsboro uses a properly compacted aggregate base — sometimes with geotextile fabric — to separate the surface from the clay and keep it stable through seasonal moisture swings.
Hillsboro's long rainy stretch from fall through spring keeps the ground saturated and narrows the paving window. Wet conditions also make drainage non-negotiable: a driveway that doesn't shed water lets moisture work into the base, where it does the most damage.
Many west-side lots sit on gentle to moderate grades. Sloped driveways need extra drainage and grading work, which adds to the total.
Simple rectangular driveways are the most cost-effective. Curves, multiple parking areas, and tie-ins to garages or the road approach add labor and cost.
The baseline ranges above reflect historically reported averages. In practice, actual project costs in Hillsboro frequently exceed them because of:
Published ranges are a starting reference, not a budget target. Always get a site-specific quote.
The most reliable estimate comes from a contractor who measures your driveway, evaluates the clay, and plans drainage. For region-wide context, see our complete asphalt driveway guide for Oregon and the statewide breakdown of how much an asphalt driveway costs in Oregon. Building fresh? Our new driveway installation in Hillsboro guide covers the process. If your driveway is worn, compare driveway resurfacing in Hillsboro against driveway replacement in Hillsboro.
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