Land grading: what to know

What the job involves, what changes the price, and what to ask a pro.

What land grading is

Land grading reshapes the ground surface with machinery so water runs away from buildings, a pad is level for construction, or a yard is smooth enough to plant or mow. It is done in layers of cut and fill, with each layer compacted, and it is often the first step before a driveway, a slab, a building or a lawn.

Signs you need it

  • Water runs toward the house and pools against the foundation after rain
  • A yard is lumpy, sunk in places and holds puddles, which makes mowing and planting difficult
  • A building pad, driveway or slab site needs to be level before construction can start
  • The lot slopes too steeply for the use it needs, and it must be reshaped into a usable area
  • New fill, a new house or an addition has changed the drainage, and the ground needs to be shaped again
  • A low spot holds standing water for days, and the surface must be raised or reshaped so it drains

What the pro does

  • Survey the site and set grade stakes, showing the existing elevations and the target grades
  • Strip any topsoil and stockpile it for use on the finished surface
  • Cut the high spots and fill the low spots with approved fill, moving the material with an excavator, a dozer or a loader
  • Compact the fill in layers with a roller or a plate compactor, so the surface will not settle under later loads
  • Shape the finish grade so water runs away from buildings and across the surface to the planned outlets
  • Spread the topsoil back, rake the surface smooth and check the grades against the survey before handoff

What changes the price

Every job is different, so we do not publish prices. These are the things that move the quote up or down.

  • Area of the site and the volume of cut and fill needed to reach the target grades
  • Difference between the existing grade and the planned grade, since large changes take more material and passes
  • Type of fill used, such as native soil, imported material or structural fill, and the distance it has to travel
  • Compaction requirements for the intended use, since a building pad needs more than a lawn
  • Access to the site, including gates, trees, fences and overhead lines that limit the machine work
  • Drainage features such as swales, catch basins or outlets that must be built into the new grade

What a written quote should spell out

  • Site area and the existing and finished grades, with the survey or staking method named
  • Cut and fill quantities, and whether any material must be imported or hauled off
  • Compaction method and the test or check used to confirm it
  • Topsoil handling, including the thickness spread back on finished areas
  • Drainage features and the discharge point for the water
  • Erosion protection and seeding or stabilization, if included

Questions to ask before you hire

  • What is the finished grade, and how do you confirm it against the survey?
  • Where will the water go after the grading is done, and does it reach a safe outlet?
  • Will the fill be compacted in layers, and how do you check the compaction?
  • What happens to the topsoil, and is it respread on the finished surface?
  • Will the site need erosion control while it is open and bare?
  • What is the plan if the soil is wet, soft or contains debris once the crew starts digging?

Red flags

  • Pushes fill on soft or organic soil without removing it first, which will settle later
  • Grades the surface flat or toward the house, with no plan for the water
  • Skips compaction and says the surface is firm enough without testing it
  • Places fill against a foundation wall without a plan for the drainage at the wall
  • Leaves the site bare and unprotected through a heavy rain with no erosion control

What you can do yourself

A homeowner can regrade a small low spot in a lawn by adding topsoil and raking it level, as a simple yard job. Call a pro for any grading that changes the flow of water toward a building, supports a structure, or moves large volumes of soil. Heavy machines and loose soil are dangerous near edges and trenches, so keep children and pets away and never work on a steep slope with machinery you are not trained to run.

Licenses and permits

Land grading is commonly done by licensed contractors, and grading that changes drainage, supports a structure or moves large volumes of soil often needs a permit in many areas. Check with your state or local licensing agency and your local building department before work starts, especially near property lines and water flow paths.

Land grading questions

How do I know which way my yard should slope?

Water should move away from the house and toward a safe outlet, such as a street, a swale or a drain. A pro can survey the lot and show the high and low points before any soil moves.

Why did my new grade settle after a few months?

Settling usually means the fill was not compacted in layers or the organic material under the fill was not removed. Ask the pro how the fill was placed and tested before the surface was finished.

Can grading change the drainage onto my neighbor's property?

Yes, changes to the grade can redirect water onto a neighboring lot, which can create a dispute and a legal problem. Check the local rules and talk to the neighbor before the grades are changed.

About this guide

This national guide is written and checked by infinibell. Rules and conditions differ by place, so local pros are credited on guides for the cities they serve, not on national ones.

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