Reference
Interior Designer seal requirements by state
Seal requirements for interior designers, state by state. Interior design credentials vary more than any other profession here — some states register, others license or certify — and so do their seal rules.
Each entry gives the licensing board, the wording the requirements set for the seal, the diameter they set, and whether an expiration date, a signature date or a city has to appear — with a link to the provision it comes from.
| Jurisdiction | Interior Designer legend | Diameter | Expiration date | Signature date | City on seal |
|---|---|---|---|---|---|
| Alabama | “Registered Interior Designer” | 2 in | No | No | No |
| Arkansas | “Registered Interior Designer” | 1½ in | No | Yes | No |
| Connecticut | “Registered Interior Designer, State of Connecticut” | no size specified | No | No | No |
| District of Columbia | “LICENSED INTERIOR DESIGNER-DISTRICT OF COLUMBIA” | no size specified | No | Yes | No |
| Florida | “State of Florida, registered interior designer” | 2 in | No | Yes | No |
| Georgia | “GEORGIA REGISTERED INTERIOR DESIGNER - STATE OF GEORGIA” | 1¾ in | No | Yes | No |
| Illinois | “Registered Interior Designer, State of Illinois” | no size specified | Yes | Yes | No |
| Iowa | “Registered Interior Designer, Iowa” | 1¾ in | No | Yes | No |
| Louisiana | “registered interior designer, state of Louisiana” | no size specified | No | Yes | No |
| Maryland | “Certified Interior Designer, State of Maryland” | 2 in | No | Yes | No |
| Minnesota | “certified interior designer” | no size specified | No | Yes | No |
| Nevada | “Registered Interior Designer” | The seal is not circular and no diameter is given. NAC 623.755(1)(a) requires the seal to "be an equilateral triangle, each side of which must be 2 1/2 inches." | No | Yes | No |
| New Mexico | “Licensed Interior Designer State of New Mexico” | 2 in | No | No | No |
| North Carolina | “North Carolina, Registered Interior Designer” | Two inches tall by 2.75 inches wide. The rule prescribes an oval, not a circle, so there is no single diameter: "The dimensions shall be two inches tall by 2.75 inches wide." | No | Yes | No |
| Oklahoma | “Licensed Interior Designer, State of Oklahoma” | no size specified | No | Yes | No |
| Texas | “Registered Interior Designer, State of Texas” | min 1½ in | No | Yes | No |
| Virginia | “Commonwealth of Virginia, Certified Interior Designer” | 2 in | No | Yes | No |
| Wisconsin | “Wisconsin, Registered Interior Designer” | 1⅝–2 in | No | Yes | Yes |