Yard grading cost

Grading a yard costs $0.30 to $1.50 a square foot for fine grading, leveling and soil preparation, typically around $0.80. A 5,000 square foot back lawn is therefore $1,500 to $7,500, typically around $4,000, before any new sod or seed goes down.

The price turns on one question: whether the existing soil only needs reshaping, or whether soil has to be brought in. Moving dirt around a yard is cheap. Buying it, delivering it and spreading it is not.

What it costs

Tight access that rules out a machine, slopes steep enough to need terracing, and heavy clay or buried rubble all push a job to the top of the range.

Fine grading or regrading with fill

These are two different jobs that often get called the same thing.

Fine grading works with the soil already there. The crew strips or kills the old turf, loosens the top few inches, cuts down the high spots, drags that soil into the hollows, adds a thin layer of topsoil where needed, and rakes the surface smooth and true with a gentle, even fall. It moves soil a few inches, not a few feet. This is the $0.30 to $1.50 a square foot job, and it is what most lawns need before sod or seed.

Regrading with fill changes the shape of the yard: raising a sunken backyard, flattening a slope into a usable lawn, or building up a whole area that holds water. It needs a skid steer or a small excavator, many truckloads of fill, compaction in layers, and topsoil on top. It is priced by the project, commonly $3,000 to $10,000 for a suburban back yard, and more where a retaining wall is needed to hold the new level.

Fill dirt is subsoil, cheap and structural, and it belongs underneath. Topsoil is what grass grows in, and it belongs in the top 4 to 6 inches. A quote that raises a lawn a foot with topsoil alone is overcharging, and one that raises it with fill alone will grow a thin, patchy lawn.

Low spots and standing water

A lawn with puddles that last more than a day after rain has one of three problems, and grading fixes only the first.

A surface hollow. The ground dips and water collects. Filling the dip and giving the whole area a steady fall of about 1 to 2%, or 1/8 to 1/4 inch per foot, toward somewhere the water can go fixes it. This is ordinary grading work.

Compacted or clay soil. The surface is level enough but water cannot soak in. Grading on top does not help. Deep ripping or tilling before regrading, or core aeration and compost topdressing on an existing lawn, does. The last is covered in the lawn aeration guide.

Nowhere for the water to go. The whole yard is the lowest point on the street, or the water arrives from a neighbor uphill. Grading can only move the puddle. The answer is a swale, a yard drain or a French drain that carries water to an outlet.

Near the house the priority changes. Soil against the foundation needs a much steeper fall than a lawn does, and the figures and the fixes for that are in the drainage and grading guide. Do the house side first, then grade the lawn to meet it.

How much topsoil you need

Topsoil is sold by the cubic yard. One cubic yard covers:

So a 5,000 square foot lawn needs about 15 cubic yards for an inch, or 31 for two inches, which is $775 to $1,860 of topsoil at $25 to $60 delivered for the two-inch layer. Order 10 to 15% more, because it settles.

Half an inch to an inch, spread in stages, is enough to smooth a bumpy lawn before overseeding.

Two to four inches is right under new sod or seed on poor soil.

Six inches is what a builder's lot stripped to subsoil really needs, and it is the level at which bulk delivery by the truckload, often 10 to 15 cubic yards per truck, starts to get cheaper per yard.

Ask where the topsoil comes from. Cheap screened topsoil can be mostly subsoil or carry weed seed, and a soil test at $15 to $60 on the delivered pile is worth doing on a large order.

DIY leveling or hiring a crew

Topdressing an existing lawn is a reasonable DIY job. Spread a quarter to half an inch of sandy topsoil or a soil and compost mix over shallow dips, work it in with a leveling rake, and the grass grows up through it. Never bury grass under more than about half an inch at once or it dies.

Hollows deeper than about 2 inches are faster fixed by cutting the turf, lifting it, filling beneath with soil, and laying it back.

Whole-lawn fine grading is where a crew earns its fee. A skid steer with a grading attachment and a laser level produces a true, even fall in a day that takes a homeowner two weeks with a rake and never looks quite as flat. Renting the machine at $250 to $450 a day makes sense only if you have used one before.

Frequently asked questions

When is the best time of year to level a lawn?

When the soil is moist but not wet, and when seed or sod can follow straight away: early fall in the north, late spring in the south. Grading wet clay smears and compacts it, and bare graded soil left over a rainy winter washes out.

How do I tell whether my yard needs regrading or just topdressing?

Stretch a string line between stakes, or lay a long straight board, across the lawn. Dips under an inch are topdressing. Dips of several inches, puddles that last days, or ground that falls toward the house need proper grading.

Can a lawn be leveled without killing the grass?

Yes, if the dips are shallow. Topdressing a little at a time lets the grass grow through, and lifting and relaying the turf works for deeper hollows. Regrading the whole surface by more than an inch or two means stripping it and starting again with sod or seed.

How much slope should a lawn have?

Enough to drain and no more: about 1 to 2% across the lawn, or 1 to 2 feet of fall over 100 feet. Steeper than about 1 in 3 is hard to mow safely and is better planted or terraced.

Why did my newly graded yard sink in places?

Usually because fill was dumped in one deep layer rather than compacted in lifts of 6 to 8 inches, or because buried stumps, roots or construction debris are rotting and settling. A good crew compacts fill in layers and removes organic material before it is covered.