An Arizona landscape architect seal is an ink seal 1-1/2 inches across, held to within 1/16 inch, around a 1-1/8 inch inner circle with the same tolerance. It reads Registered Professional Landscape Architect and Arizona U.S.A., and carries your name, registration number and the words date signed. Your signature crosses its lower portion. This page covers wording, size, device, signing, documents and expiration.
Engineer Seal Stamps compliance desk. Checked against A.A.C. R4-30-303(A) and the State Board of Technical Registration. Sources read September 2026.
| Requirement | What the rule says | Source |
|---|---|---|
| Legend | Registered Professional Landscape Architect. | A.A.C. R4-30-303(A) |
| Name and number | Your name in its registered form and your registration number. | A.A.C. R4-30-303(A) |
| Other wording | Arizona U.S.A., plus the two words date signed. | A.A.C. R4-30-303(A) |
| Outer circle | 1-1/2 inches in diameter, plus or minus 1/16 inch. | A.A.C. R4-30-303(A) |
| Inner circle | 1-1/8 inches, with the same 1/16 inch allowance either way. | A.A.C. R4-30-303(A) |
| Device | The rule calls for an ink seal, which an inked rubber stamp provides. | A.A.C. R4-30-303(A), R4-30-304(E)(1), R4-30-304(F) |
| Signing and dating | An original signature across the lower part of the seal that leaves your printed name and number uncovered, plus the date of sealing. | A.A.C. R4-30-304(E), R4-30-304(G) |
| Documents | Nine categories that apply to every profession alike, from each drawing sheet to the signature line of letters. | A.A.C. R4-30-304(A), R4-30-304(D) |
| Electronic seal | No technical standard and no product is named. | A.A.C. R4-30-304(C), R4-30-304(E)(1), R4-30-304(G) |
| Expired, revoked or suspended | Using the seal is unlawful, and the statute also reaches anyone who causes or allows that use. | A.R.S. § 32-125(C), (D) |
Arizona is one row in our landscape architect seal requirements by state table, which sets each jurisdiction's rule side by side.
What wording does Arizona require on the seal face?
Five items, all from R4-30-303(A): Arizona U.S.A., the legend Registered Professional Landscape Architect, your name in its registered form, your registration number, and the two words date signed.
The legend runs to four words on a 1-1/2 inch seal, so letter spacing matters more here than on a larger face. All five are required. For more reading, see our post on Arizona landscape architect stamp rules and regulations.
How much size variation does Arizona allow?
One sixteenth of an inch, either way, on both circles. With a 1-1/2 inch outer circle and a 1-1/8 inch inner circle, an outer measurement from 1-7/16 to 1-9/16 inches and an inner one from 1-1/16 to 1-3/16 inches fits the rule.
Those bands are narrow, so measure rather than eyeball. Related: our guide to Arizona landscape architect stamp requirements.
Which device meets Arizona's ink seal rule?
An inked rubber stamp. R4-30-303(A) describes the seal as an ink seal, and a rubber stamp is the device that lays down an inked impression, which is why it is the sound choice for this registration.
Because the rule speaks of ink, plan on an ink pad or a pre-inked stamp rather than a blind embossed impression. Background reading: our post on the Arizona landscape architect stamp.
Where does your signature go on an Arizona seal?
Across the lower portion of the seal, following Appendix A. R4-30-304(E) adds that the original signature may not hide your printed name or your registration number, and the document has to show the date it was sealed.
Sign low and keep the stroke clear of the center text. If your signature is tall, practice on a sample impression first. The words date signed on the face are a label, and the date you write is the date that particular document is sealed.
Which documents need an Arizona landscape architect's seal?
Those in the nine categories of R4-30-304(A), which apply the same way to every profession the board registers. Among them are each sheet of drawings and any report or other professional document.
This page names only some of the nine, so read R4-30-304(A) for the complete list before you set office rules. For wider context, see our post on landscape architect seals in Arizona.
Does Arizona set an electronic seal standard?
No. The provisions cited for electronic use, R4-30-304(C), R4-30-304(E)(1) and R4-30-304(G), name neither a technical standard nor a software product, so there is no approved list to buy from.
Anything electronic you plan has to be measured against the text of those provisions directly, since this page does not summarize them beyond that point.
Who is barred from using an Arizona seal?
Any registrant with an expired, revoked or suspended certificate. Under A.R.S. § 32-125(C), seal use is unlawful in each case, and § 32-125(D) extends to anyone who causes the seal to be used illegally or allows it.
Keep the stamp under your own control and renew on time. Our overview of the landscape architect seal in Arizona is a good next read.
Which body and rules govern the Arizona seal?
The State Board of Technical Registration. Its rules at A.A.C. R4-30-303 and R4-30-304 set the design, device, signing and document requirements, and A.R.S. § 32-125 supplies the statutory limits on using the seal.
Every citation on this page points either to those board rules or to A.R.S. § 32-125. Where a provision is cited but not summarized, this page says so rather than guessing at its terms.
What should you send when ordering an Arizona seal?
Your name in its registered form and your registration number. The legend, Arizona U.S.A., the words date signed and both diameters are fixed by R4-30-303(A), so none of them is a choice on the order.
Check the spelling of your name and each digit of the number against your registration before you submit.
How do you check an Arizona stamp before first use?
Stamp a sample and measure it. The outer circle should come in between 1-7/16 and 1-9/16 inches and the inner circle between 1-1/16 and 1-3/16 inches. Then confirm all five wording items are present.
Finally, sign across the lower part of the sample and make sure your printed name and number still read clearly.
Frequently asked questions
Can the legend read Registered Landscape Architect instead?
No. The legend R4-30-303(A) gives for this registration includes the word Professional: Registered Professional Landscape Architect.
Should the date be carved into the stamp?
No. The face carries the words date signed, not a date. The date you record is the date each document is sealed, which changes from one document to the next.
Is a 1-5/8 inch seal close enough?
No. The largest outer circle the tolerance allows is 1-9/16 inches, and 1-5/8 inches is 1/16 inch over that.
Does a letter I write need my seal?
R4-30-304(A)'s nine categories reach the signature line of letters and of other professional documents, so check a letter against that category before you send it.
Do addenda and change orders need the seal on every page?
R4-30-304(A) points to the first sheet or index sheet of every addendum and change order, the same treatment it gives each set of specifications.
Ready to order? Start with our Arizona stamps and seals collection and enter your name and registration number as your registration shows them.
