Driveway Replacement in Tigard, Oregon: When It's Worth It & What It Costs

When It's Time to Replace Your Tigard Driveway

At some point patching and resurfacing stop paying off and a full replacement is the smarter spend. For Tigard homeowners that point usually arrives when the base under the asphalt has failed. In Washington County, two things drive bases toward failure: the wet-season saturation common to the metro, and on hillside lots near Bull Mountain, drainage problems that erode the base from below.

A full replacement tears out the old surface and base, rebuilds the foundation, and lays new asphalt. It costs more than an overlay, but when the base is gone it is the only fix that lasts. This guide covers the signs you need replacement, what it costs in Tigard, and how the process works. For the full checklist, see our guide on 7 signs your driveway needs replacement.

Signs You Need Replacement, Not Repair

• Alligator cracking across large areas — the scaly, interconnected pattern that means the base has failed
• Potholes that keep returning after patching
• Sinking or heaving sections — common where water has eroded a sloped lot's base
• More than 25% of the surface cracked or damaged — past economical repair
• Age beyond 20–25 years with widespread deterioration
• Drainage failure — water pools, runs uncontrolled down a slope, or undermines the base each winter

One or two of these may be repairable. Several together, especially alligator cracking and sinking, mean the foundation is compromised and a new surface over it will fail again quickly.

What Driveway Replacement Costs in Tigard

Industry baseline ranges shown below. Actual costs vary with removal, base condition, slope, and size.

Driveway Size	Approx. Square Footage	Industry Baseline Range
Single car	300–400 sq ft	$1,500–$3,600
Two car	600–800 sq ft	$3,000–$7,200
Three car / extended	1,000–1,200 sq ft	$5,000–$10,800

Full replacement has historically been baselined around $5 to $9 per square foot, covering tear-out, haul-off, base rebuild, and new paving. Tigard's wet clay soils can raise the base-rebuild portion, and a sloped hillside lot adds drainage and grading work. These are starting points — a site visit gives the real figure.

The Replacement Process

1. Demolition and Removal

The old asphalt and failed base are broken up, loaded, and hauled off for proper disposal — a real cost line.

2. Excavation and Subgrade Prep

The crew excavates to a stable subgrade and grades it to drain. On a slope, this step also re-establishes a profile that sheds water off the driveway rather than down it.

3. Base Rebuild

Fresh crushed aggregate base is laid and compacted in lifts. Where the soil is soft or wet, a geotextile fabric goes between the subgrade and rock. This rebuilt, well-drained base is the whole point of replacement — it fixes the foundation the old driveway lacked.

4. Paving

Hot-mix asphalt is laid in a binder and surface course, then compacted to a typical 2.5 to 3 inches on a residential driveway, with a traction finish on steeper grades.

5. Edging and Curing

Edges are shaped and supported, the apron transition is finished, and the surface cures before use.

Why Replacement Pays Off in Tigard

It is tempting to keep patching to defer the cost, but in Washington County's wet climate that math usually loses — and on a slope, a failing base only gets worse as winter runoff keeps working at it. A proper replacement with a rebuilt base and corrected drainage resets the clock for 20-plus years and, on a hillside, restores safe winter footing.

The real value is fixing the root cause. A driveway that fails in Tigard almost always failed at the base — too thin, poorly compacted, or starved of drainage on a slope. Replacement is the chance to correct that for good. Afterward, our asphalt driveway maintenance services keep water out through the wet seasons, and our complete asphalt driveway guide for Oregon covers the rest of long-term ownership.