GroundUpCost

Sitework

Gravel Driveway Cost Calculator β€” North Carolina

Order gravel by the wrong measure and you end up about a quarter short: a cubic yard of compacted driveway weighs 1.85 tons, but a cubic yard loose in the truck weighs 1.4. This gives the tonnage for a finished, compacted depth β€” and the loose yards a supplier will actually deliver.

Figures on this page use North Carolina wage and material price data.

North Carolina gives gravel a stormwater advantage no other state here matches: under state law, #57 stone at least four inches deep over geotextile is not counted as built-upon area β€” provided it is not mixed with other aggregate and not laid over crusher run. That rules out the cheapest build, so it is a genuine trade-off rather than free money. Published prices here run $30 to $65 a ton delivered from contractors, and noticeably more from Charlotte retail yards.

sq ft
$1,150 – $3,100
Typical: $1,900 Β· installed, materials and labor

What to order

Line itemLowHigh
Excavate and shape the subgrade Cutting to depth and building the crown that sheds water. $265 $600
Geotextile fabric Includes the 7% overlap NRCS allows. Sold in rolls, so a small driveway buys a whole one. $130 $175
Lay and pin the fabric $55 $140
Gravel, delivered Tonnage for the finished compacted depth. County bids buy it cheaper than a landscape yard sells it. $395 $1,100
Spread and compact the gravel $235 $885
Delivery Per load within a few miles, rising with distance. Landscape trucks carry about six yards of stone. $60 $160
Driveway or access permit A right-of-way or county access permit, not a building permit. Many rural counties charge little or nothing. $0 $50
Total $1,150 $3,100

Compare real quotes in North Carolina

This is a research estimate. Actual pricing depends on your site conditions, so get at least three quotes from licensed pros and ask each to itemize against the line items above β€” that is the fastest way to see why two bids differ.

What drives the price

Tons or cubic yards β€” the question that costs people a load of stone

Wisconsin DOT pays for compacted in-place base at 1.85 tons per cubic yard. A county bid sheet converts loose stockpiled stone at 1.4 tons per cubic yard. Both are right, because they measure different things: the first is stone packed into a finished driveway, the second is stone heaped in a truck. The federal gravel roads manual puts the shrink between them at a minimum of 20 percent, and those two figures differ by 24. So a 600 square foot driveway finished at 6 inches holds 20.6 tons, which arrives as roughly 14.7 loose cubic yards. Order 11 yards because that is the neat volume and you will be a third short. Always ask a supplier whether their yard is loose or compacted.

The three-layer recipe you keep reading has no source behind it

Search for gravel driveway layers and you will find the same scheme everywhere: a #2 base, a #57 middle and a #411 top, eight to twelve inches in total. We could not trace that to a single DOT specification, agricultural extension service or industry association β€” every trail ended at another cost-calculator site repeating it. What is documented is simpler and cheaper. The federal gravel roads manual specifies 4.5 inches on firm ground for the lightest traffic; NRCS builds its access roads with 6 inches of dense-graded stone and its heavy-use pads with 8. One well-compacted dense-graded layer over fabric is a driveway.

Check whether gravel is even allowed where you live

Columbus, Ohio requires driveways to be a hard surface "other than gravel or loose fill" β€” gravel may be used as a base underneath, and drives that were gravel before 1985 may be maintained, but a new one is not permitted. Detroit requires asphalt, concrete or solid pavers in its R1 and R2 districts, and parking on an unpaved surface is a separate offence. Houston has no zoning so gravel is legal citywide, except in neighbourhoods that adopted the prohibited yard parking ordinance. Charlotte allows gravel but wants the first 15 feet from the street in asphalt or concrete. This is the first thing to check and the last thing most cost guides mention.

The crown matters more than the stone

The FHWA gravel roads guide spends its opening chapter on one thing: a surface that sheds water, crowned about half an inch per foot. Water that sits on gravel works its way into the subgrade, and the stone then punches down into soft ground instead of bridging it. That is also where owner-built driveways usually go wrong β€” spreading stone is unskilled work that anyone can do, while cutting grade and shaping a crown is the part that wants a machine and an eye for it.

Gravel is cheap to build and never quite finished

At roughly $1.25 to $4.00 a square foot installed, gravel costs a fraction of asphalt or concrete. The trade is maintenance: a North Carolina contractor publishes $100 to $300 to top up one to three tons, and $150 to $500 to regrade, every two to four years. Several large cost sites claim a gravel driveway lasts a hundred years; the same pages then recommend adding gravel at least annually. A gravel drive lasts as long as someone keeps grading it.

Permits in North Carolina

North Carolina is the cheapest of these states to get permission in, because NCDOT maintains most secondary roads and its own policy says a permit is normally not required for a single residence. Where one does issue, the fee is a $50 construction inspection. NCDOT will also install driveway pipe at its expense if the owner buys and delivers it, 15 to 48 inches. Charlotte is stricter: its inspection packet requires the first 15 feet from the pavement edge to be solid asphalt or concrete, which on a 12-foot drive is about 180 square feet of paving on top of the gravel.

Sources

Frequently asked questions

How many tons of gravel do I need?

Multiply length by width by the compacted depth in feet, divide by 27 for cubic yards, and multiply by 1.85. A 12 by 50 foot driveway at 6 inches is 11.1 cubic yards in place, which is 20.6 tons. The calculator above shows both that tonnage and the loose cubic yards a supplier will deliver, because the two are not the same number.

What kind of gravel should I use for a driveway?

Dense-graded crushed stone β€” sold as crusher run, ABC, 21AA, Class 5 or flex base depending on where you live. It contains fines that lock the stone together under traffic. Washed #57 drains well but has no fines, so it stays loose; pea gravel is round and uncrushed, and it migrates out from under tyres. Angular beats round, and graded beats single-size.

Do I need fabric under the gravel?

The federal manual recommends it where the subgrade is wet and fine-grained, to stop soil pumping up into the stone β€” not as a universal rule. In North Carolina there is a second reason: state rules treat #57 stone at least four inches thick over geotextile as not built-upon area for stormwater purposes, but only if it is not mixed with other aggregate and not laid over crusher run. The cheap build loses the exemption.

Can I build a gravel driveway myself?

Two thirds of the labour is unskilled β€” the federal cost schedules split a gravel pad into 20 hours of general labour against 10 of equipment operation. Laying fabric, raking and compacting are all owner-doable, and the stone arrives by truck either way. The skilled third is cutting to grade and building the crown, which is also what decides how long the driveway lasts. Against a machine rental of a few hundred dollars a day, the realistic saving on a small driveway is a few hundred dollars, not thousands.

How often does a gravel driveway need work?

Plan on regrading every two to four years and topping up the stone on a similar cycle β€” the federal manual schedules regravelling for public roads in year three of a six-year cycle. Potholes, washboarding and gravel drifting to the edges are all signs the crown has flattened, and regrading usually fixes them without new stone.

Is a permit needed for a gravel driveway?

Not a building permit β€” driveways are exempt from that. What may apply is a right-of-way or county access permit for the part that meets the road: about $103 in Houston, $165 in Travis County, roughly $20 in some Ohio counties. North Carolina is the outlier, and in homeowners’ favour: NCDOT states a permit is normally not required for a single residence, and it will install a driveway pipe free if the owner buys it.

← National gravel driveway cost calculator