Grading Land and Yards in North Carolina: What It Fixes, the 6-Inch Rule, and How to Check Who Does It

Grading sounds like a job for a big machine, but most people searching for it have a small, specific worry. A yard that holds water. A back corner that has to be leveled before a fence goes in. A new house where every rain ends up against one wall. Somebody new to Raleigh put the whole situation in two lines on a forum: they needed a fence for their dogs, had some grading to do before it could go in, and wanted to know who people trust to do it.

We’re a directory of site-work contractors, each checked against public records. We don’t do the work. This page is what we’d want a friend to know before hiring a grader: what grading is, the one number North Carolina’s code gives you, when it needs a permit, what to do when a builder’s grade is wrong, and how to check the person you hire.

What Grading Is

Grading is reshaping the ground so it sits at the right height and sheds water where you want it to go. Excavation digs below the surface; grading shapes the top of it. In practice many of the same firms do both. North Carolina’s contractor law names “grading” outright, which matters when we get to licensing.

Contractors talk about two passes:

• Rough grading is the heavy, early work: cutting high spots, filling low ones, forming a building pad, and setting the overall fall of the land.
• Finish grading is the last surface pass: smoothing the ground to its final shape before sod, seed, landscaping or hardscape.

For the building pad itself, see building pad preparation. A quote that says only “site grading” may cover only the first pass. Ask the contractor which passes the price includes. A written quote that names each one is easier to compare than one round number.

The Number: Slope Away From the House

This is the part of grading North Carolina actually writes down. The NC Residential Code, section R401.3, says surface water must be diverted to a storm sewer or another approved point of collection that doesn’t create a hazard, lots must be graded to drain surface water away from foundation walls, and the grade must fall at least 6 inches within the first 10 feet. The 2018 edition is the one in force: the State Fire Marshal says it stays the governing code until the 2024 code takes effect, and that date has not been set. The 2024 edition says the same thing.

Do the arithmetic once so the number means something. Six inches over 10 feet is 0.6 of an inch per foot, or about 5 percent. Under a 4-foot level that is about 2.4 inches of fall.

There are two exceptions in the same section, and they matter on small lots. Where lot lines, walls, slopes or other physical barriers prevent 6 inches of fall in 10 feet, the code calls for drains or swales that carry water away from the structure. And any hard surface within 10 feet of the foundation, such as a patio or a walk, must slope at least 2 percent away from the house.

The code also points at what is under the surface. Fill soil that supports footings and foundations has to be designed, installed and tested in accordance with accepted engineering practice, and where accepted soil science shows expansive, compressible or shifting soils are likely, the building official decides whether to require a soil test. A grading problem and a foundation problem are different jobs. Tell them apart before you buy either fix.

NC Clay and Compaction

NC State Extension says owners of new homes in North Carolina commonly run into two soil problems: poor fertility, and compaction with poor drainage. It says that during most new-home construction the topsoil and subsoil are removed from the building area, and the removed material is often put back around the foundation at the end. The soil has to be compacted to carry the building, but compacted soil is hard on plants. Much of the subsoil in the Piedmont and mountains is high in clay, and with the topsoil gone that clay can end up on the surface, where it drains slowly and stays wet.

What happens to a bed made of loose pillows and blankets after a week of people sitting on it?

Fill dirt behaves the same way. It looks smooth on the day the crew leaves and then flattens unevenly. NC State’s lawn guidance tells you to firm the soil after shaping until there are no footprints visible, water the area to help it settle, and fill any spots that settle unevenly so water doesn’t stand.

Two other things from the same Extension sources are worth knowing before you hire anyone:

• Sand is not a fix for clay. Unless you add sand at four to five times the volume of the clay, smaller amounts can make a concrete-like material. Composted organic matter, tilled in, is the cost-effective route for a large area.
• Trees do not like grade changes. If the final grade will be noticeably higher or lower than it is now, Extension says to build protective walls to keep the existing grade out to the edge of each tree’s canopy. A reader on a Raleigh forum put it more bluntly: grading near trees can kill them slowly, and the person doing the work may not know or care.

Does Grading Need a Permit?

Sometimes. North Carolina’s state rule is about erosion, not about the shape of your yard. An erosion and sedimentation control plan must be filed and approved before land-disturbing activity that disturbs more than one acre begins, and the state asks for the plan at least 30 days ahead. Civil penalties can run up to $5,000 per violation for each day a site stays in violation. Some counties and cities run their own programs, and the state warns that they can be stricter than the state rule.

Guilford County is one example read at its own page. It requires a grading permit and an approved erosion plan for disturbance of one acre or more, and it requires the same for a house lot inside a subdivision that is part of a larger plan. A single lot outside a subdivision that disturbs under an acre is still expected to use silt fence and a construction entrance to keep sediment out of streams and off neighbors’ lots.

So a small yard regrade is usually below the state’s acre line, but the county, the city, a subdivision’s covenants or a stream buffer can still have a say. Call the building or erosion-control office before the machine arrives. The full permit picture is on our permits page, and the erosion rules, the silt fence and the penalties have their own page at erosion control for grading.

When the Builder’s Grade Sends Water at the House

This is the case that costs the most. The house is new, the closing is behind you, and every storm leaves water against one wall. A Raleigh thread about buying new construction has the same two pieces of advice repeated by owners of several different builders: hire your own inspector before the drywall goes up, and keep records. One commenter listed what had gone wrong since buying, from major HVAC parts and appliances to “major issues with drainage”, and added: “It seems to never end.”

Start with the thing you control. Measure it, as above, at each wall, after a rain, with dated photos. Then work through who can actually act.

A few of these need a closer look.

What the certificate of compliance means. State law has the inspector make a final inspection at the end of the work under a building permit. If the finished work complies with the applicable State and local laws and the permit, the inspector issues a certificate of compliance, and nobody may occupy a new building without one or a temporary certificate. Owners call it the CO. It tells you the house passed a final inspection on that day. It does not say the yard will still shed water in two years.

The permit-pulling story. You will hear that you can get a builder’s permits yanked. The law is narrower than the story. An inspector can revoke a building permit for a substantial departure from the approved plans. But a local government may not hold back a permit or certificate of occupancy on one property to force a builder to finish work on a different property, unless another law allows it or it finds a directly related public-safety issue, and the statute lists landscaping around dwellings among the things that don’t count as one. An open permit on your own lot is a different matter. Ask the inspections office what is still open.

Put it in writing. The licensing board’s advice to homeowners is to keep every document for a job: the contract, written changes, bills, receipts and all correspondence, plus photos of the work in progress. After any phone call with a builder’s warranty line, send an email that says what was said and asks them to confirm it.

If the builder’s own fix is on the table, get what they will do in writing before they start: what work, to what slope, by whom. Then have someone who doesn’t work for the builder measure it afterward. North Carolina licenses home inspectors through the NC Home Inspector Licensure Board, so you can check a name there. A grading contractor you’ve checked can take a grading measurement too.

If the damage has reached the foundation, or either clock is getting short, that is the point to talk to a North Carolina attorney. We can’t give legal advice, and nothing here is a substitute for it.

Regrading an Existing Yard

Regrading is the right fix when the ground itself is wrong: flat, sloping toward the house, or settled unevenly. If water runs the right way and has nowhere to go, you have a drainage problem, not a grading problem, and yard drainage covers that. Plenty of yards need both. Regrading a yard that has no outlet just moves the low spot, which is why the first question a good contractor asks is where the water should end up. The code’s own phrase for it is an approved point of collection that doesn’t create a hazard.

What a careful regrade looks like follows the Extension’s site-preparation steps. If the grade is being changed, strip the topsoil, which is usually four to eight inches, and stockpile it nearby. Shape the subsoil underneath to the contour you want. Spread the topsoil back evenly over it. Firm it, water it to settle it, and fill whatever settles. Extension puts the slope needed away from buildings at 2 to 3 percent for lawn preparation. That is the lawn guidance, and it is gentler than the 6-in-10 rule at the foundation wall itself. The wall still gets the steeper fall.

Timing is about the grass, not the grader. For tall fescue from seed, NC State gives these windows: August 15 to September 1 in the mountains, September 1 to September 15 in the Piedmont, and September 15 to October 15 on the coastal plain. Seeding past those dates raises the chance of failure, and spring seeding of tall fescue is not recommended, especially outside the mountains. Fescue sod can go down any time the ground isn’t frozen. If you hire a grader in summer, ask what they plan to do with bare clay until September.

One more tip from the same source: for a lawn on compacted ground, Extension recommends core aeration and says spike aeration is not recommended, because it only further compacts the soil. Its soil guide adds that coring alone does little for water movement through compacted soil, and that tilling in compost does more.

What Grading Costs

We don’t print prices on this page. We haven’t found a public source for what grading costs in North Carolina, and what owners tell each other is all over the map. One Raleigh owner who asked about a small raised-and-walled section of yard said the quote was about double what they had expected. One of the first replies asked what “grade” and “small” meant, and told them to get more quotes. The only safe move is to get several written quotes for the same described job and compare the line items.

How to Find and Check a Grading Contractor

Start with the license. North Carolina’s contractor law defines a general contractor as anyone who undertakes to construct “any building, highway, public utilities, grading or any improvement or structure” where the cost is $40,000 or more. At that size the person needs a license from the NC Licensing Board for General Contractors, and the board has a public search that takes a minute. There is one exception worth knowing: an owner building on their own land, for their own family’s use, is exempt, under conditions the statute spells out.

Under $40,000, most yard-scale grading jobs, no general contractor license is required. That’s why the other checks carry the load. The licensing board’s own consumer advice reads like a checklist you can use for any size of job:

• Get several estimates, and compare materials and quality, not just the bottom line. A good one includes the total price, the materials, a schedule for payments and the expected timeline.
• Check at least three references, in writing, and call them.
• Get a written contract that spells out the work, the materials and the schedule, and put changes in writing.
• Keep the down payment small. Pay as work is completed. Don’t pay in cash.
• Don’t make the final payment until you’re satisfied and liens have been released.

Add the grading questions from this page: which passes the price covers, what slope the finished grade will have, how the contractor will protect trees and settle the fill, and where the water ends up. A contractor who answers these without hesitating has probably done the work before.

If a project goes wrong with a licensed contractor, the board’s complaint process is open to you. Its Homeowners Recovery Fund is a last resort for owners of single-family homes who lost money to a dishonest or incompetent general contractor. It requires an unpaid court judgment first, and the board warns that recovering your entire loss is not guaranteed, so treat it as a backstop, not a plan.

Our directory lists site-work contractors checked against public records, and the hiring guide walks through comparing quotes. For the digging side of the job, see excavation; for clearing a lot first, see land clearing.