Drain rock typically costs $30-$75 per cubic yard before delivery, with an average near $50 for common washed stone. The final price depends on rock size and quality, order quantity, distance from the quarry, and whether the quote includes spreading or trench work.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Bulk drain rock, per cubic yard | $30 | $50 | $75 | Common washed drainage stone |
| One yard delivered | $80 | $140 | $250 | Includes typical small-load delivery charge |
| Installed drainage rock | $55 | $100 | $180 | Per cubic yard; excludes major excavation |
Assumptions: U.S. bulk supplier, standard ¾-inch to 1½-inch stone, normal access; local quotes vary.
What drain rock costs per cubic yard in bulk
Common drain rock sells for about $30-$75 per cubic yard, with many buyers paying $40-$60 for washed, angular stone. Smaller orders may be priced by the ton, often around $25-$60 per ton. Because a cubic yard of gravel commonly weighs about 1.3-1.5 tons, confirm the supplier’s conversion and whether the quote uses loose or compacted volume.
A practical budget is $50 per yard for material alone, before delivery or installation. Decorative or specially graded stone can cost more, while locally quarried basic rock may cost less. A one-yard purchase can have a higher effective price than a large load because delivery and minimum charges are spread across less material.
How quarry, loading, and delivery shape the quote
Ask suppliers to separate the stone price from trucking, loading, and any placement charge. Delivery for a small order commonly adds $50-$150; longer distances, restricted truck access, or a minimum-load requirement can push the fee higher. A bulk order may reduce the delivery cost per yard even when the total invoice rises.
| Quote component | Typical price | What changes it | Common billing unit |
|---|---|---|---|
| Drain rock | $30-$75 | Stone size, washing, local supply | Per cubic yard |
| Loading or handling | $0-$20 | Supplier policy and order size | Per order or yard |
| Local delivery | $50-$150 | Distance, truck size, minimum load | Per trip |
| Spreading and placement | $25-$75 | Access, depth, wheelbarrow work | Per cubic yard |
| Excavation and disposal | $5-$20 | Soil type and haul-away volume | Per square foot, often quoted by job |
Compare delivered totals rather than material-only rates. Delivery can cost more than the rock when ordering one or two yards.
How stone size, trench depth, and distance raise prices
Standard ¾-inch drain rock is widely stocked; washed 1½-inch stone or a narrow specialty gradation may cost 10%-30% more where supply is limited. Washing removes fines that can restrict drainage, so confirm that the quoted product is clean rather than assuming all “crushed rock” is suitable.
Quantity also depends on trench dimensions. A trench 12 inches wide, 12 inches deep, and 100 feet long takes about 3.7 cubic yards before allowing for overage. A 2-foot-wide, 18-inch-deep trench of the same length needs about 11.1 cubic yards. Add roughly 5%-10% for uneven excavation and settling. Longer hauling distance and larger stone volume are two of the clearest quote drivers.
Regional supply changes material rates: prices near quarries can be 10%-20% below distant metro markets, while remote areas may pay 15%-35% more for delivered stone. These are broad comparisons, not guaranteed regional price lists; trucking distance and local competition matter.
Keep the drain rock order within the trench budget
Measure width, depth, and length before requesting bids, and have suppliers state their cubic-yard-to-ton conversion. Order the correct washed grade for the drainage design rather than paying extra for a premium size that does not improve the application. If more than one project needs aggregate, combining deliveries can lower the per-yard trucking charge.
Check whether the quote includes fabric, excavation, and soil removal. For a straightforward trench with accessible soil, doing careful layout and clearing can reduce paid labor; avoid DIY excavation near marked utilities or where unstable soil requires professional work. Accurate quantities and a clearly limited scope are the simplest ways to prevent costly over-ordering and add-ons.
How much drain rock fits common trench projects
Use this volume estimate: length in feet × width in feet × depth in feet ÷ 27 = cubic yards. For example, a 50-foot trench that is 1 foot wide and 1 foot deep requires about 1.85 cubic yards, or roughly 2 yards with a modest waste allowance. Supplier calculators may ask for inches, so verify units before submitting an order.
| Trench dimensions | Calculated volume | Order estimate | Material budget at $30-$75/yd |
|---|---|---|---|
| 50 ft × 1 ft × 1 ft | 1.85 yd³ | About 2 yd³ | $60-$150 |
| 100 ft × 1 ft × 1 ft | 3.70 yd³ | About 4 yd³ | $120-$300 |
| 100 ft × 2 ft × 1.5 ft | 11.11 yd³ | About 12 yd³ | $360-$900 |
These examples cover the rock volume only, not delivery, excavation, fabric, or labor. For irregular trenches, price a small overage instead of ordering a large extra load without measurements.
What installation labor adds to a delivered yard
Contractor installation commonly adds $25-$75 per cubic yard for accessible, prepared trenches, with labor rates often around $50-$100 per hour. A crew may place a few yards in several hours when the truck can reach the trench; carrying rock by wheelbarrow, working around landscaping, or digging by hand can extend the job substantially.
Example: 4-6 labor hours at $50-$100 per hour equals $200-$600 in labor, before materials and delivery.
Some contractors quote the whole drainage job rather than a per-yard installation rate. Confirm whether the estimate includes excavation, fabric, pipe, grading, cleanup, and disposal; comparing labor-only bids with turnkey bids can make one quote appear misleadingly low.
When delivered drain rock costs more than expected
Small-load minimums, difficult truck access, and separate disposal fees often explain a sharp difference between an online per-yard price and a final invoice. Ask whether the truck can dump at the work area, whether the supplier charges a fuel or distance fee, and whether the quoted price includes sales tax. For a driveway or narrow side yard, hand placement may be billed separately.
Before booking, request written prices for the stone grade, quantity, delivery radius, minimum order, and any wait-time or return-trip charge. A complete delivered quote makes supplier comparisons more useful than the lowest advertised yard price.