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Your Ontario Architect seal from pedigitalstamps.com meets every requirement on this page — the layout set out in R.R.O. 1990, Reg. 27, s. 41, under the Architects Act, R.S.O. 1990, c. A.26; use of the seal governed by Reg. 27, s. 42. Fill in your details and download it in seconds.
Ontario runs three separate regulators: Professional Engineers Ontario under the Professional Engineers Act, the Ontario Association of Architects under the Architects Act, and the Association of Ontario Land Surveyors under the Surveyors Act. In all three the seal is issued by the regulator rather than made by the licensee, so there is no dimension for a licensee to choose. Section 53 of Reg. 941 was replaced in its entirety by O. Reg. 837/21 effective July 1, 2022, and the regulation is consolidated to July 1, 2026 with O. Reg. 126/26 as the last amendment. Three pieces of PEO's own material lag behind that: the "P.Eng. Seal" page on peo.on.ca attributes the sealing rule to "section 53 of the act", but the Act ends at s. 49 and the sealing provision is s. 53 of the regulation; the "Act, Regulations, By-laws" page still describes Reg. 941 as "amended to O.Reg. 332/23"; and the 2005/2008 guideline still hosted on peo.on.ca required an electronic facsimile to be "identical in size, shape, and content to the seal created by the rubber stamp", a sentence the current March 2022 guideline and the amended s. 53(3)(b) both dropped.
Full Ontario Architect seal requirements, with every citation →
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Select your state & profession
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Who we are
Our digital Ontario Architect stamp generator creates instant state-approved electronic architect stamps. Our platform provides full customization of your digital seal, including an option to add your signature. Professional Engineer (PE) stamps, Architect stamps, and Land Surveyor stamps are available for immediate download after customization. There is no waiting. Every electronic professional seal we generate is 100% compliant with state board requirements, ensuring your digital stamp meets all necessary standards.
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FAQ
Frequently asked questions about Ontario digital architect stamps and seals.
Once you are licensed in Ontario, you can generate your seal here and download it immediately. Fill in the form and position your signature if you want one. The layout follows R.R.O. 1990, Reg. 27, s. 41, under the Architects Act, R.S.O. 1990, c. A.26; use of the seal governed by Reg. 27, s. 42, which is the provision the Ontario Association of Architects will measure the seal against.
Ontario’s architect stamp rule is R.R.O. 1990, Reg. 27, s. 41, under the Architects Act, R.S.O. 1990, c. A.26; use of the seal governed by Reg. 27, s. 42, administered by the Ontario Association of Architects, a different body from the engineering board. Regulation 27 prescribes no wording, shape or size. The design is approved by the Council and the seal itself is issued by the Registrar, so the architect does not choose its dimensions.
A further 9 requirements, each tied to the subsection that imposes it, are itemised in the Ontario requirements section on this page.
R.R.O. 1990, Reg. 27, s. 41, under the Architects Act, R.S.O. 1990, c. A.26; use of the seal governed by Reg. 27, s. 42 governs the Ontario architect’s seal but does not prescribe a diameter. Sizes quoted for Ontario elsewhere generally come from stamp suppliers’ catalogues rather than from the rule. What the rule does require is that your name and license number stay clearly legible.
An architect cannot have a seal made. Reg. 27 defines "seal" as a seal issued by the Registrar, and using a seal that has not been issued under the Regulation is listed as professional misconduct. (R.R.O. 1990, Reg. 27, s. 1; s. 42, para. 18)
No — holding a licence is not the qualification. Section 41(1) entitles a member to a seal only if the member holds a certificate of practice, belongs to a partnership that holds one, is an employee of the Crown of Ontario or of Canada, a crown agency, a sole proprietorship, a partnership or a corporation and is required to use a seal in that capacity, or is an officer, director or full-time employee of a certificate of practice holder who personally supervises and directs the practice of architecture. A member outside all four descriptions has no route to a seal and so has nothing to apply; the only other entitlement in the section is s. 41(2), for a holder of a temporary licence. The entitlement is tied to that qualifying capacity and ends with it — including when an employee is simply no longer required to use one — so the authority to seal does not run with the licence. (R.R.O. 1990, Reg. 27, ss. 41(1) and 41(2); s. 42, para. 22)
No regulation says. Section 41 is the entire seal provision and it prescribes no wording, no shape and no size — the design is approved by the Council and the seal itself is issued by the Registrar, so the dimensions were never the architect's to choose. The two-inch figure that circulates comes from the OAA's own Application for Seal, which describes the physical stamp products the Association sells: one has a two-inch diameter circular base and the other is a rubber stamp measured by its handle and case. Those are product dimensions, not a prescribed size for the impression. (R.R.O. 1990, Reg. 27, s. 41; OAA Application for Seal — Architect (OAA-08-22))
The OAA's answer is categorical: record or as-built drawings must never be sealed. The seal is for designs produced in connection with rendering architectural service, and the Association states it is not a "business seal" for fee proposals, business letters or contracts, and must never be applied to title blocks on blank drawing sheets, blank letters, or any other incomplete or unchecked document. Sealing an as-built set to show who drew it is exactly the use the notice rules out. (OAA Regulatory Notice RN.01, Version 7.0 (January 1, 2025))
Yes, and this is the trap in a CAD or BIM workflow. Before drawing files are shared with consultants, owners, contractors or any other party to the project, the files must no longer contain the seal image, and the seal information must be removed in its entirety. The OAA supplies high-resolution images of the seal in several file formats when it issues one, on the condition that the image is not altered in any way and is applied clearly; and when a seal is returned to the Registrar, every image of it must be deleted from every storage device and electronic folder and the Registrar advised in writing that this has been done. (OAA Regulatory Notice RN.01, Version 7.0 (January 1, 2025))
No. Affixing a seal, or permitting one to be affixed, to a design that was not prepared in its entirety under the personal supervision and direction of a member or a holder of a temporary licence is professional misconduct — there is no mechanism for sealing the portion you are responsible for and disclaiming the rest. Ontario engineers work the other way: their regulation contemplates a practitioner assuming responsibility for part of a document's engineering content, provided suitable text in the immediate vicinity of the seal identifies which part. Reading that arrangement across to architecture is a misconduct finding waiting to happen. (R.R.O. 1990, Reg. 27, s. 42, para. 19; cf. R.R.O. 1990, Reg. 941, s. 53(6))
