Asphalt driveway cost: per-square-foot pricing, new vs overlay
$2,500–$5,500
New driveways commonly install for about $3–$7 per sq ft with base prep; overlays over sound existing asphalt run roughly $2–$4.50. Depth, base stone, and demolition of the old surface move the number most.
Asphalt is priced by the ton and laid by the square foot, and the gap between those two units is where bad quotes hide. A fair quote names its depth (inches), its asphalt tonnage, and its stone base depth — with those three numbers you can do the arithmetic yourself. Strip any bid of those three line items and you're buying by vibes.
What drives the cost: depth vs base vs demolition
Asphalt depth. The single biggest lever. Residential work is commonly 2–3 inches of compacted asphalt; driveways that carry RVs or sit on soft clay do better at 3–4. Each added inch over 600 sq ft is roughly 3–4 more tons of mix, and asphalt mix commonly delivers at $100–$180 per ton depending on region and oil prices.
Base preparation. 4–8 inches of compacted crushed stone under the asphalt is what actually carries the load. New installation (excavate, stone, compact, pave) costs meaningfully more per sq ft than paving over something that already exists — and cheap quotes on new work usually mean cheap base.
Demolition and removal. Tearing out and hauling off existing asphalt adds about $1–$3 per sq ft; removing old concrete costs more.
Geometry and extras. Long drives price better per ft than tiny awkward ones (mobilization minimums of $800–$1,500 are common); steep grades, tight turning radii, curbing/formboard, and drainage regrading add line items.
The thickness math: sq ft to tons
Compacted asphalt weighs roughly 110–150 lbs per cubic foot — work with about 140. So: cubic feet = sq ft × inches ÷ 12, and tons ≈ cubic feet × 140 ÷ 2,000.
| Driveway | Asphalt thickness | Cu ft | Approx. tons | Mix-only material cost |
|---|---|---|---|---|
| 600 sq ft | 2 in | 100 | ~7 | $700–$1,250 |
| 600 sq ft | 3 in | 150 | ~10.5 | $1,050–$1,900 |
| 600 sq ft | 4 in | 200 | ~14 | $1,400–$2,500 |
| 1,000 sq ft | 3 in | 250 | ~17.5 | $1,750–$3,150 |
Material is only part of the installed number — tack coat, stone base, equipment, and labor make up the rest, which is why the installed ranges below start where they do:
| Project type | Per sq ft (installed) | Typical 600 sq ft | Notes |
|---|---|---|---|
| New, standard (2 in over new base) | $3.50–$7.00 | $2,200–$4,500 | Excavate, stone, compact, pave |
| New, heavy-use (3–4 in) | $4.50–$8.50 | $2,800–$5,300 | RVs, trailers, soft soils |
| Overlay (2 in over sound asphalt) | $2.20–$4.50 | $1,400–$2,800 | Only over a structurally sound base |
| Tear-off + full replacement | $5.00–$10.00 | $3,200–$6,200 | Old surface removed, base rebuilt |
DIY vs hiring a pro
The honest framing: no. Asphalt must be laid hot (around 275°F at the plant, worked above ~185°F), leveled fast, and compacted with a vibrating roller while it's still in workable range — a driveway company's entire fleet exists for that 30-minute window. Bagged “cold patch” products are repair material, not a driveway.
The DIY part that exists: crack-filling and sealcoating. Crack fill at $50–$150 of material a season and professional-grade sealcoat at $200–$400 of material every 2–3 years are the maintenance that lets a $4,000 driveway last 20 years instead of 12.
Difficulty rating: pro for install; DIY-friendly for the maintenance that protects it.
Repair vs replace: where the threshold sits
- Repair hairline and alligator cracking in isolated areas with crack fill and patch: commonly $150–$500. Sealcoat ($300–$700 for a typical home drive) every 2–3 years keeps surface cracks from becoming base cracks.
- Overlay ($2.20–$4.50 per sq ft) when the surface is widely tired but the base is solid and grades drain away from the garage. One overlay on a good base is standard practice — the second usually says replace.
- Replace when more than about a third of the surface alligators, when patches sink or flex under tires, or when water sheets toward the house. Alligator cracking is the base screaming, and no surface fix calms it for long.
- Sequence note: if a sewer line repair or utility work might cross your drive, do it before the new asphalt — saw-cutting a two-year-old driveway hurts. And when several big exterior projects line up — roofing (roof cost guide), paving, a new deck — coordinate heavy-traffic and dumpster timing once.
Hiring a pro: what a fair quote includes
A complete asphalt quote states: asphalt depth in inches and estimated tons, stone base depth and compaction plan, demolition scope of the existing surface, tack coat, edge/formboard handling, drainage or regrading line items, crew equipment (roller on site, not a hand tamper), plant source, and cure-time guidance (no parking for roughly 48–72 hours, no heavy loads for weeks, first sealcoat at 6–12 months). Written warranty on workmanship of 1–2 years is common; thickness promises in inches are what separate pros from asphalt cowboys.
Red flags: “leftover mix from another job” discounts, quotes without a depth number, cash-only no-warranty offers, and paving over an un-addressed base failure without telling you it's temporary.
Frequently asked questions
How much does an asphalt driveway cost per square foot?
About $3–$7 installed for new work including base prep; overlays run about $2–$4.50. Deep excavation in clay or heavy-use depth pushes past $8.
How thick should an asphalt driveway be?
Commonly 2–3 inches of compacted asphalt over 4–8 inches of stone; 3–4 inches of asphalt for heavy vehicles or weak soils. Sub-2-inch residential installs are a common early-failure story.
How many tons of asphalt do I need?
Roughly sq ft × inches ÷ 12 × 140 ÷ 2,000. A 600 sq ft drive at 3 inches is about 150 cu ft, roughly 10–11 tons. Demand tons and depth on every quote so you can check this.
Overlay or full replacement?
Overlay only over a structurally sound, well-draining base. Widespread alligator cracking, flexing, and standing water say the base is done and replacement is the honest math.
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