Written by Acorn Sales Company, manufacturing stamps and seals since 1964 · Reviewed by Holly R, VP of Sales and Marketing at Acorn Sales, against Department of Revenue and Taxation, Insurance, Securities, Banking and Real Estate Branch. Guam has no separate appraiser board on 22 September 2026 · Updated 25 September 2026
Guam asks less of the face of an appraisal report than any jurisdiction in this series: no seal, no stamp, no license number, and no prescribed block of text. Chapter 30 of title 22 of the Guam Code Annotated, Secs. 30101 to 30125, was read in full from the Compiler of Laws and neither the word “seal” nor the word “stamp” appears anywhere in it. The one report-marking duty is a single sentence at Sec. 30110, headed Designation of Classification: an appraiser in appraisal reports shall designate his or her appraisal classification as provided in the Act. No number, no format, no position.
Everything else about the report comes from USPAP rather than from Guam. Sec. 30111 requires the report to be in writing, to conform to the current version of the Uniform Standards of Professional Appraisal Practice, and to contain a certification by the appraiser in compliance with USPAP, with copies retained for at least five years. So the thing that authenticates a Guam report is the USPAP signed certification, and the thing Guam adds is one word or phrase naming your classification. There is also one gap in this research, named plainly below.
Guam real estate appraiser seal requirements at a glance
| Requirement | Guam rule | Source |
|---|---|---|
| Seal required | No. Neither “seal” nor “stamp” appears anywhere in ch. 30, which was read in full from the Compiler of Laws. | 22 GCA ch. 30, Secs. 30101 to 30125 |
| Required elements | The appraisal classification, designated in the report. That is the whole of the Guam-specific requirement. No license number, no prescribed wording and no expiry date is called for by the chapter. | 22 GCA Sec. 30110 |
| Size and shape | Not prescribed. Guam fixes no dimension, border or shape, because it prescribes no device. | 22 GCA ch. 30, Secs. 30101 to 30125 |
| Device allowed | Not prescribed and not restricted. Sec. 30110 asks the appraiser to designate the classification and is silent on how that is done. | 22 GCA Sec. 30110 |
| Signature and date | Not prescribed by the chapter. The report must contain a certification by the appraiser in compliance with the current version of USPAP, so the signature requirement reaches you through USPAP rather than through Guam statute. | 22 GCA Sec. 30111 |
| What must be sealed | Nothing. The duty attaches to appraisal reports and is a classification designation rather than a sealing one. | 22 GCA Sec. 30110 |
| Electronic seal | Not addressed in ch. 30. Report form and signature are left to USPAP by Sec. 30111. | 22 GCA Sec. 30111 |
| Renewal and lapse | No expiry date is called for on the report, so nothing on a device goes stale at renewal. A change of classification is what changes the designation. | 22 GCA Sec. 30110 |
| Firm requirements | None bearing on the face of a report in the chapter. Sec. 30117, Place of Business and License Display, is a premises display duty and contains neither search word. | 22 GCA Sec. 30117 |
| Regulator | Department of Revenue and Taxation, Insurance, Securities, Banking and Real Estate Branch. Guam has no separate appraiser board; Sec. 30104 designates the Director of Revenue and Taxation | 22 GCA Secs. 30101 to 30125; Sec. 30104 |
Is a seal required in Guam?
No. Chapter 30 of title 22 of the Guam Code Annotated is the whole of Guam’s appraiser statute, running from Sec. 30101 to Sec. 30125, and it was read in full this pass from the Judiciary of Guam Compiler of Laws own chapter file. Neither the word “seal” nor the word “stamp” appears anywhere in it. The numbering is continuous with no repealed or reserved sections, so no seal section was adopted and later removed. Guam also has no separate appraiser board with a seal of its own to be mistaken for a licensee duty: Sec. 30104 designates the Director of Revenue and Taxation, who administers certification directly through the Insurance, Securities, Banking and Real Estate Branch.
What the statute asks for instead
One sentence. Sec. 30110, headed Designation of Classification, provides that an appraiser in appraisal reports shall designate his or her appraisal classification as provided in the Act. That is the entire Guam-specific report-marking duty. Compare it with almost any mainland state and what is missing is striking. There is no license number requirement. There is no prescribed wording beyond the classification itself. There is no rule about where on the report it goes, no format, no abbreviation table, and no expiry date. Guam names the thing you must disclose and stops.
USPAP does the rest of the work
Sec. 30111, headed Appraisal Reports Requirements, is where the substance lives. At a minimum an appraisal report must conform to the Uniform Standards of Professional Appraisal Practice in its current version and must be in writing. Each report must contain a certification by the appraiser in compliance with the current version of USPAP, must contain written documentation, and copies must be retained for at least five years. The important point for anyone shopping for a device: the authenticator on a Guam report is the USPAP signed certification. Guam did not write a parallel authentication scheme of its own, which is why there is no seal and no number to put on one.
Designate the classification as provided in the Act
The wording of Sec. 30110 repays a second look, because the phrase “as provided in this Act” is doing the work. It ties the designation back to the classification scheme chapter 30 itself creates, which is why the right answer is the exact classification your Guam credential grants rather than a description you prefer. If your credential says one thing and your business card says another, the statute points at the credential. It also means the designation changes only when your classification changes, not at renewal. In practice most Guam appraisers put the classification in the signature area with the USPAP certification, since that is where a reader is already looking and where the certification Sec. 30111 requires already sits. The statute does not require that position; it simply never addresses position at all, which leaves it to you.
What to engrave, and what to leave off
If you want a device for Guam work, the honest version is short. Your name as you sign. Your appraisal classification, worded exactly as your Guam credential words it, since Sec. 30110 says to designate it as provided in the Act. Your firm name if you want it. That is all the statute supports. You may of course add your certification number, and many appraisers do because clients and reviewers look for one, but understand that you are adding it for practical reasons rather than to satisfy chapter 30, which does not ask for it. What to leave off is a border legend reading Territory of Guam or anything shaped like an official device, since that dresses a private identification block up as a credential Guam does not issue in that form.
The gap in this research, named plainly
One thing could not be checked. The Guam Administrative Rules and Regulations promulgated by the Department of Revenue and Taxation for the appraiser program were not reachable on this pass. If any Guam report-marking duty exists beyond Sec. 30110, that is where it would sit. The statute is solid: it was read from the Compiler of Laws own file and it is unambiguous. But an administrative rule is a different document, and this page cannot tell you what is in one it did not read. Before you order, ask the Department of Revenue and Taxation whether any administrative rule adds a report-marking requirement. One question, one answer, and you will know more than this page does on that point.
One more thing worth knowing about Guam
The federal Appraisal Subcommittee’s November 2024 compliance review of Guam notes that Guam’s statutes and regulations have been an ongoing concern since 2014, and that the Department of Revenue and Taxation is working with the legislature to amend the code. That is a forward-looking caveat rather than a finding about today: chapter 30 as it currently stands is what this page describes. But it means Guam is more likely than most jurisdictions to change, and it is a reason to favour a modest device you can replace over a heavy one you cannot. If the chapter is amended to add a number or a prescribed block, you will want to reorder.
Do not borrow another profession’s rule
Guam prescribes seals for other credentials. Architects, professional engineers and land surveyors practising in Guam work under their own provisions with their own seal requirements, and those are a different credential and do not reach a real estate appraiser. Nothing in those provisions supplies a diameter, a legend or an instrument for an appraisal report. If a listing offers you a Guam appraiser seal built to a prescribed size, ask where the size comes from, because chapter 30 contains no figure of any kind, having no seal to give one to.
Embosser, ink stamp or the eSeal image
With nothing prescribed, this is purely about how your work travels, and in an island market a fair amount of it travels electronically. An embosser leaves a raised impression that scans and photographs badly, so it suits a wet-signed original kept in the file rather than a PDF sent to a lender. An ink stamp reproduces cleanly in a scan and is the practical everyday choice. A digital image drops straight into the PDF beside your signature, which for off-island clients is often the only version anyone ever sees. Acorn cuts all three for appraisers: the Real Estate Appraiser Regular Rubber Stamp of Seal at $34.95, the Real Estate Appraiser Desk Seal Embosser at $44.95, and the Real Estate Appraiser eSeal Electronic Image Stamp of Seal at $20.00.
Sizing and layout
Guam sets no dimension and no shape, and with the least text of any jurisdiction in this series the layout is close to unconstrained. A Guam block is usually the smallest one an appraiser orders, because it carries the least text. Name, classification, and optionally a number and firm name, sits comfortably in a compact rectangle. A round die works here better than it does in the wordier states, since there is little text to bend around an arc: your name across the center with the classification in the surround reads cleanly. Keep the classification wording exactly as your credential words it rather than shortening it to fit, and if the fit is tight tell us and we will change the size rather than the words. Send us the text and we will set a proof before anything is cut.
Ordering, and care
Send your name as you sign, your appraisal classification as it reads on your Guam credential, and say whether you want your certification number and firm name on the device. Tell us whether reports go out wet-signed or as PDFs, because that settles the embosser question, and if you work for off-island lenders the digital image is usually worth having alongside whatever you order. In use, a self-inking stamp gives thousands of clean impressions. Store an embosser flat so the jaws stay aligned. Browse the real estate appraiser stamps and seals collection, or contact us with your text. This page is a research summary and not legal advice, and it does not cover the Guam administrative rules, which could not be read.
- Real Estate Appraiser Stamps and Seals
- Real estate appraiser stamps and seals
- Electronic Seals and eSeal Image Files: What You Get and What You Do Not
Frequently asked questions
Does Guam require a real estate appraiser to have a seal?
No. Chapter 30 of title 22 of the Guam Code Annotated, Secs. 30101 to 30125, was read in full from the Compiler of Laws and neither “seal” nor “stamp” appears anywhere in it. One caveat: the Guam administrative rules for the appraiser program could not be reached, so ask the Department of Revenue and Taxation whether any rule adds a report-marking duty.
What does Guam require on the report?
One thing of its own. Sec. 30110 provides that an appraiser in appraisal reports shall designate his or her appraisal classification as provided in the Act. Everything else about report content comes from USPAP through Sec. 30111.
Does Guam require my license number on the report?
Not by statute. Chapter 30 asks for the classification and says nothing about a number. You may include one, and many appraisers do because clients and reviewers expect it, but that is practice rather than a chapter 30 requirement.
What does Sec. 30111 require?
That the report be in writing, conform at a minimum to the current version of USPAP, contain written documentation and a certification by the appraiser in compliance with current USPAP, and that copies be retained for at least five years.
Who regulates appraisers in Guam?
The Department of Revenue and Taxation, through its Insurance, Securities, Banking and Real Estate Branch. Guam has no separate appraiser board; Sec. 30104 designates the Director of Revenue and Taxation, who administers certification directly.
Is Sec. 30117 about marking reports?
No. Sec. 30117, Place of Business and License Display, is a premises display duty about where your license hangs, not about what goes on a report, and neither search word appears in it.
Could the Guam rules change?
Possibly. The federal Appraisal Subcommittee’s November 2024 compliance review notes that Guam’s statutes and regulations have been an ongoing concern since 2014 and that the Department of Revenue and Taxation is working with the legislature to amend the code. Chapter 30 as it stands is what this page describes.
What should I put on a Guam device?
Your name as you sign and your appraisal classification worded as your credential words it, since that is what Sec. 30110 asks you to designate. A certification number and a firm name are optional additions. Leave off any border legend that makes a private block look like an official territorial device.
