Home › Guides › Grading Permits
Minor yard leveling—smoothing small slopes or filling modest low spots—often does not require a permit in Washington. Significant grading that moves substantial material, alters drainage, or disturbs a large area does. The deciding factors are volume of material moved, slope, and proximity to drainage. Confirm with Clark County or your city before starting any grading project.
Washington state does not have a single statewide grading permit threshold that applies to every parcel. Permit authority rests with whichever local jurisdiction your property falls under, and in Clark County that means two very different offices depending on where you live. If your address is inside an incorporated city—Vancouver, Camas, Washougal, Battle Ground, Ridgefield, La Center, or Yacolt—you apply to that city's building or public works department. If your address is in an unincorporated area such as Hazel Dell, Salmon Creek, Orchards, Felida, Brush Prairie, Five Corners, Minnehaha, Mount Vista, Meadow Glade, Lake Shore, or Hockinson, your permit comes from Clark County. Calling the wrong office is a common mistake that costs a week of lead time before anyone catches the error.
What actually triggers a permit? The honest answer is that it depends on the jurisdiction, and you need to ask. Most jurisdictions look at three things: the volume of material being moved, the slope of the affected area, and the proximity of the work to storm drainage or waterways. Small jobs—spreading a cubic yard of topsoil to fill a low spot, or reshaping a modest slope to direct water away from a foundation—frequently fall below the threshold and require nothing beyond courtesy to your neighbors and care about where runoff goes. Larger reshaping projects, work that intercepts or redirects drainage, or any grading on a steep slope typically does require a permit. On larger disturbed areas, Washington state stormwater rules may also engage, adding a separate layer of review. The stormwater threshold is set by the jurisdiction—do not rely on a figure you found online. Confirm it directly with Clark County or your city before starting work.
Erosion control is part of the permit conversation everywhere in Clark County. The county's clay-heavy soils hold water from October through May and become highly erodible when stripped. Jurisdictions know this and will ask what your erosion control plan looks like before they sign off. For smaller jobs that don't need a permit, this is still a real-world concern: bare clay on a slope can send a muddy mess into your neighbor's yard by the first October rain if you don't seed or mulch promptly after grading is complete.
If your project is genuinely small—a truckload of fill, leveling a corner of the lawn, regrading soil away from a foundation—spend fifteen minutes on the phone with the permit office before you dig, rather than assuming you need nothing. They will tell you quickly, and if the answer is "no permit needed," you have that confirmation to fall back on if a neighbor or inspector raises questions later.
Start here if grading permits raised more questions.
If you are doing the grading yourself—renting a plate compactor and moving material with a rented tractor or a skid steer—your cost is largely equipment rental, fill or topsoil if you need it, and your time. Those small jobs are routine and do not require a contractor for the earthmoving portion. Where a professional adds value is when the volume of material or the precision of finish grades exceeds what rental equipment handles well, or when a permit requires compaction documentation that needs to go through an inspection.
Professional grading work in Clark County typically runs $110–$190 per hour for equipment and operator. Most residential grading projects land in the $1,500–$6,500 range, with cost driven by the volume of material moved and whether that material stays on-site or needs to leave. Hauling spoil off costs $60–$120 per cubic yard once you factor in truck time and disposal. If you are importing fill, budget similarly for delivery and compacted placement. A site visit and written estimate before committing is always worth the hour—phone quotes on grading jobs are not reliable because site conditions drive the number.
Permit fees are set by the jurisdiction and change periodically. We do not publish permit fee estimates because they vary and we do not want to hand you a wrong number. When you call the permit office to ask whether you need a permit, ask for the current fee schedule at the same time.
How we handle grading permits in the field.
The most common mistake homeowners make with grading is assuming the work is too small to matter. That assumption is usually right—but on the occasions when it is wrong, the consequences are expensive. Regrading without a required permit can trigger a stop-work order, require you to restore the site to its original condition at your cost, or create complications during a future home sale when the permit record shows unpermitted grading. A five-minute phone call to the jurisdiction costs nothing and closes that risk.
The second mistake is directing water toward a neighbor's property without tracing where it will go after you regrade. Washington common law treats surface water drainage as a property-rights matter. Grading that concentrates runoff onto an adjacent parcel can create a neighbor dispute or a nuisance claim even when the underlying work is well within permit thresholds. Before reshaping a slope, trace the water: where does it go now, and where will it go after? If the answer changes substantially, that is worth a conversation with whoever is downstream before you fire up the equipment.
A third mistake is scheduling significant grading in Clark County during the wet season without erosion control in place from the first day. The county's clay soils compact and smear under equipment when wet, which means both that grading results are poor and that exposed ground seeds erosion problems that persist for months. The productive dry window runs roughly mid-June through September. Wet-season grading is possible but requires active erosion mitigation and usually costs more in time and materials.
You do not need a contractor for small grading jobs. Spreading topsoil, filling a shallow low spot, or regrading a mild slope away from a foundation are all tasks a homeowner can handle with rented equipment or simply a wheelbarrow and a few weekends. If the area is small, the slopes are gentle, and the material is staying on-site, hiring a contractor is optional rather than necessary.
Call a professional when the volume of material exceeds what you can move efficiently by hand or with a compact rental machine, when precision finish grades matter—around a foundation, a new driveway, or a drainage outfall—or when a permit requires compaction documentation for inspection. Licensed contractors also carry general liability insurance and have experience navigating the permit process in Clark County, which matters when the scope of work pushes into permit territory or when inspections are part of the workflow.
Also call 811 before you dig—any excavation in Washington is subject to RCW 19.122.030, which requires you to mark the proposed work area in white paint and notify underground facility operators through the 811 one-call system at least two full business days (and no more than ten business days) before breaking ground. This requirement applies to homeowners, not just contractors, and it is free. Hitting an unmarked utility line while grading is a genuine safety hazard and a potential liability. Call 811 before any ground is broken, whether or not you hire a contractor for the work itself.
More on grading permits across Clark County.
Adding a thin layer of topsoil or compost to an existing lawn almost never requires a permit. Where permits engage is when you are moving significant volumes of material, altering drainage patterns, or working on steep slopes. If you are not sure whether your project crosses that line, a quick call to Clark County or your city's permit office takes about five minutes and gives you a definitive answer at no cost.
Grading permits in unincorporated Clark County—communities like Hazel Dell, Salmon Creek, Orchards, Felida, Brush Prairie, Hockinson, Meadow Glade, and similar areas—come from Clark County, not any city. If your address is inside Vancouver, Camas, Battle Ground, or another incorporated city, that city's permit office handles it. Calling the wrong office first is a common mistake that delays the process.
The stormwater disturbance threshold is set by the jurisdiction—either Clark County or the incorporated city your parcel is in—and you should confirm the current number directly with that office. We do not publish thresholds because they are subject to change and because an incorrect figure could lead someone to proceed without a permit they actually need. Call and ask; they will answer quickly.
Homeowners are covered by RCW 19.122.030 and must call 811 before any excavation, including grading. The process is straightforward: mark your proposed work area in white paint or flags, then call 811 or submit the request online. Utilities are marked within two business days. The service is free, and the requirement applies to every excavation in Washington regardless of project size.
The practical dry window in Clark County runs from about mid-June through September. The county's clay-heavy soils are difficult to finish-grade when wet, and bare clay erodes quickly once October rains arrive. Grading during fall or winter is possible on sites with hard surface access, but it costs more and requires active erosion control from the first day of work to avoid downstream problems.
We work across Clark County and the incorporated cities and can tell you from experience whether the scope of your project is likely to cross into permit territory. Give us the parcel address and a description of what you are trying to accomplish, and we will give you a straight answer before you spend anything.