A decomposed granite driveway typically costs $1-$7 per square foot installed, with a common 600-square-foot project ranging from about $900 to $3,000. Price depends mainly on excavation, base thickness, whether the granite is stabilized, local labor rates, and how much drainage work is needed.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Installed driveway | $1 per sq ft | $3 per sq ft | $7 per sq ft | Basic surface to stabilized, prepared installation |
| 600-sq-ft driveway | $600 | $1,800 | $4,200 | Before unusual access or drainage work |
| Decomposed granite material | $30 per ton | $55 per ton | $100 per ton | Varies by grade, supplier, and delivery |
What a 600-square-foot granite driveway usually costs
For a straightforward 600-square-foot driveway, loose decomposed granite over a prepared base often totals $900-$1,800, or about $1.50-$3 per square foot. A stabilized surface, thicker base, or more extensive grading can bring the total to $2,100-$4,200, equal to roughly $3.50-$7 per square foot.
Most standard projects land near $1,800-$3,000 when the site needs routine preparation and a compacted surface. These estimates assume a residential driveway with normal machine access, no major retaining work, and midrange materials. Assumptions: 600 sq ft, U.S. midrange labor, standard access, and no major drainage correction.
How excavation, gravel, and labor shape the quote
Quotes often combine site preparation, aggregate, installation, and finishing. A contractor may price the project as a single installed rate, so buyers should ask whether excavation, hauling, edging, and compaction are included.
| Quote item | Typical price | What it covers | Common cost change |
|---|---|---|---|
| Excavation and grading | $0.50-$2.50 per sq ft | Removing soil and shaping slope | Rock, roots, or poor access |
| Base aggregate | $25-$65 per ton | Crushed stone beneath the DG | Depth and delivery distance |
| Decomposed granite surface | $30-$100 per ton | Loose or selected-grade granite | Color, screening, and source |
| Labor and compaction | $0.75-$2.50 per sq ft | Spreading, shaping, and compacting | Crew size and site conditions |
| Edging and drainage | $4-$18 per linear ft | Restraint, swales, or runoff control | Material and drainage scope |
Base preparation and labor can cost as much as the visible granite surface. Labor estimates may be calculated as 10-24 crew hours for a 600-square-foot job, but excavation or difficult access can add substantially.
Driveway width, granite depth, and stabilization change the price
Area is the first major cost driver: increasing a driveway from 600 to 1,000 square feet raises material and installation expense by roughly two-thirds if the same construction method is used. A 10-foot-wide, 60-foot-long driveway covers 600 square feet; a 12-foot width over the same length covers 720 square feet.
Depth matters too. A 2-inch DG finish uses less material than a 3-inch layer, while the compacted base beneath it may need 4-8 inches depending on soil and vehicle loads. Stabilized DG commonly adds about $1-$3 per square foot over loose material. For regular passenger-car traffic, a firm compacted base is generally more important than simply adding a thicker DG surface.
Drainage problems, a slope above roughly 5%, or soft soil may require extra grading, geotextile fabric, or runoff control. Those conditions can add $300-$2,000 or more, depending on the affected area and whether a drain or retaining feature is needed.
How long installation takes and when labor costs rise
A small, accessible driveway may take a two- or three-person crew one to two days after material delivery. A larger job with excavation, base placement, and drainage work can take two to four days. Contractor labor rates vary, but a planning range of $50-$100 per worker-hour is reasonable for estimating; machine time may be billed separately.
Short, easy-to-reach jobs can still carry a contractor minimum of $300-$800. Narrow gates, hand excavation, steep access, or limited truck access increase labor time and may require smaller equipment or extra material handling.
How regional delivery and labor affect U.S. estimates
Prices can differ by 15%-35% between lower-cost rural markets and high-cost metro areas. Regions near granite quarries may have lower material and delivery charges, while distant locations can pay more for trucking. In expensive coastal cities, labor and disposal fees can push a basic installation above the national middle range.
Seasonal demand also affects scheduling. In areas with mild, dry weather, spring and fall may be busy periods; wet conditions can delay grading and compaction. Requesting quotes before peak landscaping season may improve scheduling, though it does not guarantee a lower rate. Ask contractors to list delivery distance, disposal, and any minimum charge separately.
When loose DG costs less than stabilized or paved surfaces
Loose DG is usually the least expensive finish, but it can shift, develop ruts, or need periodic replenishment. Stabilized DG costs more upfront and can hold together better, but it still requires a suitable base and careful water management. Gravel is a close alternative, often costing $1-$3 per square foot installed, while asphalt commonly runs about $5-$12 per square foot and concrete about $8-$18 per square foot.
Compare the finished surface and maintenance needs, not just the first installation price. For a 600-square-foot area, loose DG may cost $900-$1,800 initially; asphalt may be about $3,000-$7,200. Actual prices vary with base preparation, thickness, location, and contractor scope.
Ways to lower a decomposed granite driveway estimate
Keep the driveway footprint and finish specification consistent when comparing bids. Ask each contractor to state excavation depth, base material and thickness, DG grade, compaction method, edging, and whether stabilization is included. A low quote may omit essential base work or disposal.
Homeowners can sometimes reduce charges by clearing vegetation and movable obstacles before the crew arrives, provided the contractor approves the preparation. Keep sound existing base material when inspection confirms it can be reused, and avoid paying for stabilization or decorative edging that the site does not need.
Get at least three itemized quotes for the same square footage and construction depth. Check that each bid includes delivery, equipment, cleanup, drainage provisions, and taxes where applicable; compare the total installed price as well as the per-square-foot rate.