Grading Construction: When You Need a Grading Permit

Appendix J defines the terms the permit rules depend on. Per the California Building Code's version of Appendix J, excavation is the removal of earth material by artificial means (also called a cut), and fill is the deposition of earth material by artificial means. Grading is the combination: cut, fill, or both.

Three things follow from that wording:

• Moving dirt around on your own lot counts. It does not have to leave the site.
• Both directions count. A site that is all cut and a site that is all fill are both graded sites.
• The permit rules attach to the earthwork, not to the building. A project can need a grading permit and a separate building permit, or only one of them.

Appendix J is optional until someone adopts it. The text says its provisions are not mandatory unless a state agency adopts them or the adopting ordinance references them. That is why a grading rule that looks standard in one county is missing in the next. Some jurisdictions adopt Appendix J with amendments. Others write a standalone grading chapter. A few fold earthwork into their stormwater or land disturbance rules.

Before you plan around any number, find out which of those your jurisdiction uses. Search the municipal code for "grading" and for "Appendix J." The adopting ordinance and its amendments to Section J103.2, the exemptions section, are what you are looking for.

Most codes list exemptions as a set of tests. You usually have to pass every test in the item that fits your work. A typical exemption has three parts: a depth or height limit, a volume cap, and a slope limit. Many also add conditions, such as the work not obstructing a drainage course or not supporting a structure.

The numbers differ by place. These examples come from published codes:

Read the table for what it shows about structure, not for a number to copy. Look at three differences.

What gets counted. Fullerton tests the fill volume. San Bernardino County adds excavation and fill together. A project that moves 40 cubic yards of cut and 40 cubic yards of fill would pass one test and fail the other.

What else limits you. Depth, slope and distance conditions can each defeat an exemption even when the volume is small. A 30-cubic-yard fill that is 4 feet deep passes the LA County-style volume cap but fails Fullerton's depth test. A small fill that blocks a drainage path is typically not exempt under any of them.

Where exemptions switch off. Some codes narrow or disable exemptions in special zones. One published city code states that several of its exemption items do not apply within its hillside zone. If your lot is on a slope, in a floodplain or near a watercourse, assume the exemption is narrower and read the zone rules.

Excavating for a foundation is often treated differently from site grading. Many codes exempt excavation for a structure that is covered by its own building permit, because the building permit review already looks at it. Fill placed to support a structure is the opposite: it usually needs review, and codes commonly require a soils report when the permit includes fill. In Bullhead City, for example, the handout requires a soils report for any permit that includes fill.

If you are building a house pad, a garage slab or a retaining system, confirm in the code whether the earthwork goes under the building permit or needs its own grading permit. Ask the plan checker. Do not assume.

Application requirements follow J104 in Appendix J, plus local additions. In California's amended text, as reproduced by Signal Hill, the application includes grading plans, soils engineering reports, and, in an Alquist-Priolo fault zone, an engineering geology report. The reports have to be signed by professionals licensed by the state. Other jurisdictions ask for more. Tukwila, WA, for example, requires plans and reports meeting J104, identification of sensitive areas, and slope stability studies where needed.

A working checklist, to be matched against your local submittal list:

1. A grading plan showing existing and proposed contours, limits of work, property lines and drainage.
2. Earthwork quantities: cut, fill, import and export.
3. A soils or geotechnical report when the work includes fill or slopes. Who must sign it depends on the code.
4. An erosion and sediment control plan, covered below.
5. Haul route and dust control information if your city asks for it.
6. Fees. Some jurisdictions base grading fees on the larger of cut or fill volume rather than the sum. Check the fee schedule. Our guide on how much a building permit costs explains how valuation-based fees are built.

The drawings that show the grading often sit on or next to the site plan, so the site plan for a building permit guide is a useful companion.

Many jurisdictions tie the grading permit to an erosion control plan. Johnson County, Iowa lists grading permits among the approvals for which an Erosion and Sediment Control Plan is required, along with subdivision plats, site plans and demolition permits. Maplewood, Minnesota requires a grading plan and permit whenever a significant amount of soil is displaced or a drainage pattern is altered, and holds an escrow until the turf is established.

Some places also ask for financial assurance. Coralville, Iowa requires erosion control performance bonds or irrevocable letters of credit before the grading permit is approved.

Small sites sometimes get a lighter path. Anne Arundel County, Maryland publishes standard grading plans for minor work, but only when erosion control can be met with a reinforced silt fence, a stabilized construction entrance and vegetation.

Even if your city exempts the grading, the stormwater rules may not. EPA's Construction General Permit covers operators who disturb one acre or more, or less than an acre as part of a larger common plan, as described in the 2022 Federal Register notice. EPA issues that permit only where it is the permitting authority. Most states are authorized to run their own program, with permits that generally follow the federal framework, so you will usually apply through the state agency. Georgia's EPD factsheet is one example of a state-run version.

The two permits are independent. You can need a state stormwater permit with no local grading permit, and the reverse.

Grading permits come with inspections, and they often involve the design professional, not only the city. Under Boise's adoption of J105, the registered design professional provides a final report stating that the work conforms to the approved soils report and the appendix. In Los Angeles County, a soils engineer or field technician provides routine inspection and certifies compliance with the approved plans.

Line up that inspector before you break ground. Compaction testing and rough-grade approval often have to happen before you can pour or frame on the pad. If you are tracking several permits and inspection dates at once, our permit tracking notes on the FAQ page explain how to keep the dates in one place.