Written by Acorn Sales Company, manufacturing stamps and seals since 1964 · Reviewed by Holly R, VP of Sales and Marketing at Acorn Sales, against the Minnesota Board of Architecture, Engineering, Land Surveying, Landscape Architecture, Geoscience, and Interior Design and Minn. Stat. § 326.12, subds. 2 and 3 on 21 September 2026 · Updated 21 September 2026
Minnesota does not require an architect to own or use a seal at all. Minn. R. 1800.4300 uses the permissive verb twice: “Each person may, upon licensure or certification, also obtain a seal,” and the stamped seal “may be used on documents in addition to the signed and dated certification required under part 1800.4200.” Minn. Stat. § 326.12, subd. 2 reads the same way. There is no rule in chapter 1800 or in Minn. Stat. §§ 326.02 to 326.15 that requires a seal on anything.
What is mandatory is a block of prescribed text. Minn. R. 1800.4200, subp. 1 provides that “The certification and signature on plans, drawings, specifications, plats, reports, and other documents that require a signature is mandatory,” and subp. 4 fixes the architect sentence word for word: “I hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Architect under the laws of the state of Minnesota.” Signature, typed or printed name, date and license number follow it. So the Minnesota product is a certification block stamp, and the round seal is the extra.
Because no seal is required, none is prescribed. There is no legally required Minnesota architect seal size and no required shape. If you want one, it is a design decision rather than a compliance one, and it can be made to whatever you want: your own name, your firm, a monogram, a logo, a credential you actually hold. Put your own name, your firm name, and any credential you actually hold on it. Leave off “Licensed” and “Registered” and any state-issued title unless the state issued you one, because that is the part some states do restrict. A Minnesota licensed architect does hold that title, and Minn. R. 1800.4300 prescribes exactly that legend, “licensed architect,” for the optional seal.
Minnesota architect seal requirements at a glance
| Requirement | Minnesota rule | Source |
|---|---|---|
| Seal required | No, but an optional seal is specified | Minn. Stat. § 326.12, subds. 2 and 3 |
| Required elements | On the optional seal: your name; On the optional seal: the legend “licensed architect”; In the mandatory certification block: the prescribed architect certification sentence; In the block: your signature; In the block: your typed or printed name; In the block: the date; In the block: your license number | Minn. Stat. § 326.12, subds. 2 and 3 |
| Size and shape | Not addressed. No dimension appears in Minn. Stat. § 326.12, subd. 2 or in Minn. R. 1800.4300, and the board publishes none. Checked the full text of both provisions and of Minn. R. 1800.4200. A Minnesota architect. | Minn. Stat. § 326.12, subd. 2 |
| Device allowed | For the optional seal the statute contemplates a regular seal with a rubber stamp alternative: “A rubber stamp facsimile thereof may be used in lieu of the seal on tracings from which prints are to be made or on papers which would be damaged by the regular seal.” For the mandatory certification, Minn. R. 1800.4200, subp. 1 allows it to be “electronic…; facsimile; or digital,” and Minn. Stat. § 326.12, subd. 3 adds that a stamp, printed signature or electronically created signature has the same force as an actual signature if it creates an accurate depiction of it. | Minn. Stat. § 326.12, subds. 2 and 3 |
| Signature and date | The signature is yours, or yours as the architect under whose direct supervision the document was prepared, and it must be accompanied by the certification, the license number and the date the signature was affixed. | Minn. Stat. § 326.12, subd. 3 |
| What must be sealed | Plans, drawings, specifications, reports and other documents prepared under Minn. Stat. §§ 326.02 to 326.15. | Minn. Stat. §§ 326.12, subd. 3 and 326.03, subd. 2 |
| Electronic seal | Minn. R. 1800.4200, subp. 1 permits the certification and signature to be “electronic, as defined by Minnesota Statutes, section 325L.02, paragraph (h); facsimile; or digital.” That cross-reference is to Minnesota’s Uniform Electronic Transactions Act definition, not to any design-profession standard. | Minn. R. 1800.4200, subp. 1 |
| Renewal and lapse | A seal may be used “during the life of a licensee’s license… if it remains unrevoked, has not expired, or has not been suspended,” and the statute makes it unlawful to stamp or seal any document after the license has expired, been revoked or suspended unless it has been renewed or reissued. | Minn. Stat. § 326.12, subd. 2 |
| Firm requirements | Minnesota registers firms. | Minn. Stat. ch. 319B |
| Regulator | The Minnesota Board of Architecture, Engineering, Land Surveying, Landscape Architecture, Geoscience, and Interior Design | Minn. Stat. §§ 326.02, 326.03 and 326.12, with Minn. R. 1800.4200 (certification and signature) and 1800.4300 (seal), from the Minnesota Office of the Revisor of Statutes, and the board’s firm licensure information. One pair of rules governs all seven credentials the board issues |
Is a seal required in Minnesota?
Minnesota does not require an architect to own or use a seal. It requires a signed, dated certification, and treats the seal as an optional addition. Minn. R. 1800.4300: “Each person may, upon licensure or certification, also obtain a seal,” and the stamped seal “may be used on documents in addition to the signed and dated certification required under part 1800.4200.” Minn. Stat. § 326.12, subd. 2 uses the same permissive verb. The mandatory item is in the next rule: Minn. R. 1800.4200, subp. 1 provides that “The certification and signature on plans, drawings, specifications, plats, reports, and other documents that require a signature is mandatory,” implementing Minn. Stat. § 326.12, subd. 3.
What must appear on the seal
- On the optional seal: your name
- On the optional seal: the legend “licensed architect”
- In the mandatory certification block: the prescribed architect certification sentence
- In the block: your signature
- In the block: your typed or printed name
- In the block: the date
- In the block: your license number
The Minnesota seal carries no license number. Minn. R. 1800.4300 asks only for the name and the legend, and the number belongs to the certification block instead. The legend is prescribed word for word and the architect entry is “licensed architect.” The certification sentence is likewise fixed by Minn. R. 1800.4200, subp. 4 and for an architect reads: “I hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Architect under the laws of the state of Minnesota.” Do not accept the engineer sentence with the title swapped, because the object of the sentence differs by profession: land surveyors certify a survey, plan or report and geologists certify a plan, document or report.
Size and shape
Not addressed. No dimension appears in Minn. Stat. § 326.12, subd. 2 or in Minn. R. 1800.4300, and the board publishes none. Checked the full text of both provisions and of Minn. R. 1800.4200. A Minnesota architect seal has no legally required size or shape, because there is no legally required seal.
Embosser, rubber stamp or digital
For the optional seal the statute contemplates a regular seal with a rubber stamp alternative: “A rubber stamp facsimile thereof may be used in lieu of the seal on tracings from which prints are to be made or on papers which would be damaged by the regular seal.” For the mandatory certification, Minn. R. 1800.4200, subp. 1 allows it to be “electronic…; facsimile; or digital,” and Minn. Stat. § 326.12, subd. 3 adds that a stamp, printed signature or electronically created signature has the same force as an actual signature if it creates an accurate depiction of it. The safe buy in Minnesota is a certification block stamp, not a round seal.
Signing and dating
The signature is yours, or yours as the architect under whose direct supervision the document was prepared, and it must be accompanied by the certification, the license number and the date the signature was affixed. Placement is specified: the required signature and certification “must appear on all pages of plans and drawings that must be signed, but only on the first page of specifications, plats, reports, or other documents that must be signed.” Nothing requires signing across a seal, because the seal is optional. The act is one-way: “that signature becomes a permanent part of that document and must not be removed at a later date for any reason.”
The sentence is the legal act in Minnesota, and the stamp is decoration
Almost every state makes the seal the operative thing. Minnesota inverts it. Minn. R. 1800.4300 says a licensee may obtain a seal and that a stamped seal “may be used on documents in addition to the signed and dated certification required under part 1800.4200.” There is no rule anywhere in chapter 1800 or in Minn. Stat. §§ 326.02 to 326.15 that requires a seal on anything.
What is mandatory is a block of prescribed text. For an architect, Minn. R. 1800.4200, subp. 4 fixes it as “I hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Architect under the laws of the state of Minnesota,” followed by signature, typed or printed name, date and license number.
So the Minnesota product is a certification block stamp, and the copy on it has to match your credential exactly. Three consequences are worth stating plainly. There is no legally required Minnesota seal size or shape, because there is no legally required seal. The certification goes on every page of plans and drawings but only the first page of specifications and reports. And it is permanent: once a document is certified, “that signature becomes a permanent part of that document and must not be removed at a later date for any reason.”
Which documents must be sealed
Plans, drawings, specifications, reports and other documents prepared under Minn. Stat. §§ 326.02 to 326.15. The carve-out is broad and statutory: the requirement “shall not apply to any plans, drawings, specifications, plats, reports, or other documents of an intraoffice or intracompany nature or that are considered to be drafts or of a preliminary, schematic, or design development nature by licensed or certified individuals who would normally be responsible for their preparation.” Minnesota’s architectural practice exemptions for single-family and two-family dwellings, farm buildings and temporary construction sheds are in Minn. Stat. § 326.03, subd. 2.
Electronic and digital seals
Minn. R. 1800.4200, subp. 1 permits the certification and signature to be “electronic, as defined by Minnesota Statutes, section 325L.02, paragraph (h); facsimile; or digital.” That cross-reference is to Minnesota’s Uniform Electronic Transactions Act definition, not to any design-profession standard. The board names no technology, no certificate authority and no tamper-evidence test. The statutory limit is qualitative: a stamp, printed signature or electronically created signature carries the force of an actual signature only “if it creates an accurate depiction of the licensed or certified professional’s actual signature,” so a typed name in a signature block is not enough.
Renewal, lapse and retirement
A seal may be used “during the life of a licensee’s license… if it remains unrevoked, has not expired, or has not been suspended,” and the statute makes it unlawful to stamp or seal any document after the license has expired, been revoked or suspended unless it has been renewed or reissued. Licenses renew biennially. Nothing changes the license number on renewal and nothing requires a seal or a certification stamp to be surrendered or destroyed. The one irreversible act is on the document: a certification, once applied, can never be removed.
Firm requirements
Minnesota registers firms. Any business offering architecture, engineering, land surveying, landscape architecture, geoscience or certified interior design services must operate under proper professional oversight, and the board issues a Firm Registration certificate. A firm may also elect professional firm status under Minn. Stat. ch. 319B, which requires a Secretary of State filing and an application signed by a board licensee who is an owner or employee. No rule requires a firm registration number to appear on certified documents, and the firm holds no seal. The certification in Minn. R. 1800.4200, subp. 4 is written in the first person and names you.
What to check before you order
Lead with a certification block stamp rather than a round seal. Ask for the exact architect sentence from Minn. R. 1800.4200, subp. 4 set out in full, with ruled lines below it for Signature, Typed or Printed Name, Date and Lic. No. Read the proof word for word before you approve it; the object of the sentence is “this plan, specification, or report” for an architect and differs for surveyors and geologists, and a supplier reusing another profession’s text will hand you a noncompliant block. If you also want the optional seal, it carries only your name and the legend “licensed architect,” no number, and there is no required diameter. Keep the signature line open, since a printed or stamped signature counts only if it accurately depicts your actual signature.
Browse architect stamps and seals.
Frequently asked questions
Does Minnesota require an architect seal?
No. Minn. R. 1800.4300 says a licensee may obtain a seal and that a stamped seal may be used in addition to the signed and dated certification required under part 1800.4200. Minn. Stat. § 326.12, subd. 2 uses the same permissive verb. Nothing in chapter 1800 or in Minn. Stat. §§ 326.02 to 326.15 makes a seal compulsory on any document.
What does Minnesota require instead of a seal?
A certification and a signature. Minn. R. 1800.4200, subp. 1 makes the certification and signature mandatory on plans, drawings, specifications, plats, reports and other documents that require a signature, implementing Minn. Stat. § 326.12, subd. 3. The block carries the prescribed certification sentence, your signature, your typed or printed name, the date and your license number.
What exactly does the Minnesota architect certification say?
Minn. R. 1800.4200, subp. 4 fixes it: “I hereby certify that this plan, specification, or report was prepared by me or under my direct supervision and that I am a duly Licensed Architect under the laws of the state of Minnesota.” Do not accept the engineer sentence with the title swapped, because the object of the sentence differs by profession: land surveyors certify a survey, plan or report and geologists certify a plan, document or report. Read the proof word for word.
What size is a Minnesota architect seal?
There is none, because there is no legally required seal. No dimension appears in Minn. Stat. § 326.12, subd. 2 or in Minn. R. 1800.4300, and the board publishes none. Minn. R. 1800.4200 adds nothing. A Minnesota architect seal has no prescribed size and no prescribed shape.
What goes on the optional Minnesota seal?
Two things, under Minn. R. 1800.4300: your name and the legend, which for this credential is “licensed architect.” The Minnesota seal carries no license number, because the number belongs to the certification block instead. Beyond those prescribed items, a seal here is a design decision. Put your own name, your firm name, and any credential you actually hold. Leave off “Licensed” and “Registered” and any state-issued title unless the state issued you one, which for a Minnesota licensed architect it has.
What device should I buy in Minnesota?
A certification block stamp rather than a round seal. Ask for the exact architect sentence from Minn. R. 1800.4200, subp. 4 set out in full, with ruled lines below it for Signature, Typed or Printed Name, Date and Lic. No. For the optional seal, Minn. Stat. § 326.12, subd. 2 contemplates a regular seal with a rubber stamp alternative: “A rubber stamp facsimile thereof may be used in lieu of the seal on tracings from which prints are to be made or on papers which would be damaged by the regular seal.”
Where does the Minnesota certification go on a set?
Placement is specified in the rule: the required signature and certification “must appear on all pages of plans and drawings that must be signed, but only on the first page of specifications, plats, reports, or other documents that must be signed.” Nothing requires signing across a seal, because the seal is optional.
Can a Minnesota certification be removed later?
No. Minn. Stat. § 326.12, subd. 3 makes the act one-way: “that signature becomes a permanent part of that document and must not be removed at a later date for any reason.”
Which Minnesota documents are exempt?
The carve-out is broad and statutory. The requirement “shall not apply to any plans, drawings, specifications, plats, reports, or other documents of an intraoffice or intracompany nature or that are considered to be drafts or of a preliminary, schematic, or design development nature by licensed or certified individuals who would normally be responsible for their preparation.” Minnesota’s architectural practice exemptions for single-family and two-family dwellings, farm buildings and temporary construction sheds sit in Minn. Stat. § 326.03, subd. 2.
Can I certify electronically in Minnesota?
Yes. Minn. R. 1800.4200, subp. 1 permits the certification and signature to be “electronic, as defined by Minnesota Statutes, section 325L.02, paragraph (h); facsimile; or digital,” a cross-reference to Minnesota’s Uniform Electronic Transactions Act rather than to any design-profession standard. The board names no technology, no certificate authority and no tamper-evidence test. The limit is qualitative: a stamp, printed signature or electronically created signature carries the force of an actual signature only “if it creates an accurate depiction of the licensed or certified professional’s actual signature,” so a typed name in a signature block is not enough. Keep the signature line open on any stamp you order.
Can I use a Minnesota seal after my license lapses?
No. A seal may be used “during the life of a licensee’s license… if it remains unrevoked, has not expired, or has not been suspended,” and the statute makes it unlawful to stamp or seal any document after the license has expired, been revoked or suspended unless it has been renewed or reissued. Licenses renew biennially, nothing changes the license number on renewal, and nothing requires a seal or a certification stamp to be surrendered or destroyed.
Does a Minnesota firm need registration?
Yes, though it does not change the document. Any business offering architecture, engineering, land surveying, landscape architecture, geoscience or certified interior design services must operate under proper professional oversight, and the board issues a Firm Registration certificate. A firm may also elect professional firm status under Minn. Stat. ch. 319B, which requires a Secretary of State filing and an application signed by a board licensee who is an owner or employee. No rule requires a firm registration number on certified documents, and the firm holds no seal. The certification in Minn. R. 1800.4200, subp. 4 is written in the first person and names you.
