Typical Installed Range
Expect about $2,200-$3,600 for a 400-square-foot asphalt driveway in Surprise. A straightforward installation with no old driveway to remove often falls near $2,200-$2,900.
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How Much Would a 20x20 Asphalt Driveway Cost?
Surprise Asphalt prices a 20x20 driveway from site conditions rather than a flat sheet number. In Surprise, a 400-square-foot asphalt driveway typically costs $2,200-$3,600 installed, with base preparation, thickness, drainage, removal, and equipment access shaping the final estimate.
Quick Summary
- A 20x20 driveway covers exactly 400 square feet and typically costs $2,200-$3,600 installed in Surprise, or about $5.50-$9 per square foot.
- Residential builds generally use 2-3 inches of hot mix asphalt over 4-6 inches of compacted aggregate base.
- Old surface removal can add $1-$3 per square foot ($400-$1,200), while caliche and rocky subgrade preparation can add $500-$1,000.
- Fall through early spring is the preferred paving window; July-September monsoon weather can delay dry-weather installation.
Three Numbers Behind the Estimate
Base and Thickness
Two inches can serve passenger vehicles over a well-compacted base, while 3 inches provides more resistance to heat-related rutting and regular truck or trailer loads.
Itemized Site Estimate
Compare demolition, base preparation, asphalt tonnage and labor, drainage work, and finishing separately so the quoted scope is clear.
What to Inspect Before Pricing
20x20 Layout and Paving Equipment Access
The full 400-square-foot footprint and the route paving equipment must use. Tight access can change the work plan and labor needed.
Compacted Base and Asphalt Layers
2-3 inches of compacted hot mix asphalt over 4-6 inches of aggregate base. The layer profile explains why base work and thickness affect price.
Drainage, Slope, and Edge Restraint
How water leaves the paved area and where the edges need support. Drainage correction, slope, and finishing details can move a project toward the upper end of the range.
20x20 Cost Snapshot
Straightforward New Installation
A flat, accessible 400-square-foot site with no old driveway to remove commonly totals $2,200-$2,900.
Removal and Base Work
Removing an old asphalt or gravel surface can add $400-$1,200, and compacting caliche or rocky subgrade can add another $500-$1,000.
Thickness and Vehicle Load
Passenger vehicles may be served by a 2-inch surface on a properly prepared base; regular trucks, RVs, or trailers can justify 3-4 inches and stronger base preparation.
Overlay or Full-Depth Work
A sound 400-square-foot base with minor surface cracking may qualify for a $1,500-$2,500 overlay. Widespread alligator cracking or heaving points toward full-depth replacement instead.
Thickness and Cost Chart
| Asphalt Thickness | Tons for 400 Sq Ft | Estimated Material + Labor |
|---|---|---|
| 2 inches | About 2.4-3 tons | $2,000-$2,800 |
| 3 inches | About 3.6-4.5 tons | $2,600-$3,600 |
| 4 inches for heavy vehicles | About 4.8-6 tons | $3,200-$4,600 |
What the Estimate Includes
The $2,200-$3,600 installed range covers more than asphalt material. A complete scope can include excavation or demolition, subgrade preparation, aggregate-base compaction, hot mix asphalt and labor, edge restraint, and final grading, with each item separated on the estimate.
Factors That Change the Total
A basic 2-inch overlay on a sound base can run closer to $3-$5 per square foot, while a full-depth 3-inch installation with new aggregate base and compaction to 95% standard Proctor density can reach $6-$9 per square foot. Existing-surface removal, caliche or rocky soil, slope, drainage correction, restricted equipment access, edge work, and heavy-vehicle reinforcement can raise the total.
Common Follow-Up Questions
Is 2 inches enough? It can be for passenger vehicles over a properly compacted 4-inch base, but 3 inches adds margin against rutting and heavier loads. Is asphalt cheaper than concrete? National comparisons put asphalt at $3-$9 per square foot and concrete at $6-$12, with asphalt generally costing less upfront and becoming usable in 2-3 days rather than a week or more. How long can it last? Proper installation plus seal coating and crack sealing can support a 15-20-year lifespan, with seal coating typically costing $0.15-$0.25 per square foot every 2-3 years.
Plan Your Driveway
Get a Site-Specific Estimate
Share the driveway dimensions, existing surface, slope or drainage concerns, access conditions, and the vehicles it will carry. An itemized inspection-based estimate can confirm the right base, thickness, tonnage, removal work, and finishing scope for the property.