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 Board of Governors of the Licensed Architects, Landscape Architects and Licensed Interior Designers of Oklahoma and 59 Okla. Stat. § 46.42 on 21 September 2026 · Updated 21 September 2026
The wording changed: your seal reads Licensed Interior Designer, State of Oklahoma. 59 O.S. § 46.42 provides that “Each licensed interior designer shall have a seal, the image of which must contain the name of the licensed interior designer, the person’s license number and the words, ‘Licensed Interior Designer, State of Oklahoma’,” and requires technical submissions to be sealed, signed and dated. The 2026 Act renamed both the board and the credential, so a die carrying Registered Interior Designer dates from the earlier regime and should be replaced rather than argued through a plan review.
Buy ink, not an embosser. OAC 55:10-11-8(a)(1) applies to all three of this board’s professions alike: the seal “shall be of a type that makes an image on the surface of original documents and duplications of original documents. Both the use of a rubber stamp or electronic image is permissible.” The rule does not mention an embosser, and neither permits nor forbids owning one. What it does mean is that a dry embossed impression cannot serve as the required seal, because it does not make an image on duplications. If your firm wants a raised device, keep your name, number and legend off it.
The date goes across the face. OAC 55:10-11-8(c) provides that “The handwritten or electronically generated date shall be affixed across their seal,” and (c)(1) requires seal, signature and date on all technical submissions and on the original cover sheet and the page identifying all specification pages covered, including addenda and field changes. Size the die to leave room for it.
Oklahoma interior designer seal requirements at a glance
| Requirement | Oklahoma rule | Source |
|---|---|---|
| Seal required | Yes | 59 Okla. Stat. § 46.42 |
| Required elements | Your name, Your Oklahoma license number, The words Licensed Interior Designer, State of Oklahoma and A circle | Okla. Admin. Code 55:10-11-8(a)(2) |
| Size and shape | No size is stated. | Okla. Admin. Code 55:10-11-8(a)(2) (no diameter given) |
| Device allowed | OAC 55:10-11-8(a)(1) applies to all three of this board’s professions alike: the seal “shall be of a type that makes an image on the surface of original documents and duplications of original documents. | Okla. Admin. Code 55:10-11-8(a)(1) |
| Signature and date | OAC 55:10-11-8(c): “The handwritten or electronically generated date shall be affixed across their seal,” and (c)(1) requires seal, signature and date on all technical submissions and on the original cover sheet and the page identifying all specification pages covered, including addenda and field changes. | Okla. Admin. Code 55:10-11-8(c) |
| What must be sealed | All technical submissions, addenda, field orders and other documents of service issued by the licensee for use in Oklahoma, plus the original cover sheet and the page identifying all specification pages covered. | Okla. Admin. Code 55:10-11-8(a), (c)(1) |
| Electronic seal | An electronic image of the seal is permissible under OAC 55:10-11-8(a)(1), and an electronically generated date is accepted under (c). | Okla. Admin. Code 55:10-11-8(a)(1), (c) |
| Renewal and lapse | Not addressed in the seal rule. | Okla. Admin. Code ch. 55:10 (seal rule silent) |
| Firm requirements | A Certificate of Authority is required for the entity under OAC 55:10-13-5 for any firm or entity to contract for or offer licensed services in Oklahoma, with 59 O.S. § 46.9 requiring an appropriately licensed principal and Board certification. | Okla. Admin. Code 55:10-13-5 |
| Regulator | The Board of Governors of the Licensed Architects, Landscape Architects and Licensed Interior Designers of Oklahoma | Okla. Admin. Code title 55, chapter 10, rules 55:10-11-8 and 55:10-13-5, effective August 3, 2026, read from the clean copy published by the Board |
Is a seal required in Oklahoma?
Oklahoma licenses interior designers and requires them to seal. 59 O.S. § 46.42 provides that “Each licensed interior designer shall have a seal, the image of which must contain the name of the licensed interior designer, the person’s license number and the words, ‘Licensed Interior Designer, State of Oklahoma’,” and requires technical submissions to be sealed, signed and dated. OAC 55:10-11-8(a) requires every individual authorized to practice licensed interior design to procure a seal to identify all technical submissions, addenda, field orders and other documents of service issued for use in Oklahoma.
What must appear on the seal
- Your name
- Your Oklahoma license number
- The words Licensed Interior Designer, State of Oklahoma
- A circle
The legend changed with the 2026 Act. Oklahoma now licenses rather than registers interior designers, and the prescribed words are Licensed Interior Designer, State of Oklahoma. A die reading Registered Interior Designer is stale wording, even though it was correct under the prior Act, and an older stamp should be replaced rather than reused. Shape is a circle. Nothing provides for a firm name, an NCIDQ number, a Certificate of Authority number on the face or an expiration date. Do not reuse an Oklahoma architect or landscape architect die; the legend names one profession.
Size and shape
No size is stated. Neither OAC 55:10-11-8 nor 59 O.S. § 46.42 gives a diameter, an inner circle or a lettering height. The sources here are 55:10-11-8 in full and the three statutory seal sections. Size for legibility and for the date that has to go across the face.
Embosser, rubber stamp or digital
OAC 55:10-11-8(a)(1) applies to all three of this board’s professions alike: the seal “shall be of a type that makes an image on the surface of original documents and duplications of original documents. Both the use of a rubber stamp or electronic image is permissible.” The rule does not mention an embosser and neither permits nor forbids one, but a dry embossed impression will not make an image on duplications of original documents and so cannot be the required seal. The safe buy is a rubber or self-inking stamp.
Signing and dating
OAC 55:10-11-8(c): “The handwritten or electronically generated date shall be affixed across their seal,” and (c)(1) requires seal, signature and date on all technical submissions and on the original cover sheet and the page identifying all specification pages covered, including addenda and field changes. Section 46.42 states the same trio and bars sealing work not prepared by or under the licensed interior designer’s responsible control, with noted exceptions for architect-prepared work and specified Code Use Groups.
Licensed, not registered, and the wording changed under your feet
Oklahoma is one of the minority of states that licenses interior designers and gives them a seal with statutory force. The 2026 Act renamed the board and the credential: it is now the Board of Governors of the Licensed Architects, Landscape Architects and Licensed Interior Designers of Oklahoma, and 59 O.S. § 46.42 prescribes the words Licensed Interior Designer, State of Oklahoma. Dies and templates carrying Registered Interior Designer date from the earlier regime. Replace them rather than trying to argue the old wording through a plan review.
Which documents must be sealed
All technical submissions, addenda, field orders and other documents of service issued by the licensee for use in Oklahoma, plus the original cover sheet and the page identifying all specification pages covered. Scope is the thing to watch: § 46.42 frames the responsible-control limit with exceptions tied to architect-prepared work and to specified Code Use Groups, so which building occupancies a licensed interior designer may seal for is governed by the Act rather than by the seal rule. Confirm the occupancy before sealing.
Electronic and digital seals
An electronic image of the seal is permissible under OAC 55:10-11-8(a)(1), and an electronically generated date is accepted under (c). The rule names no certificate authority, no cryptographic standard and no authentication procedure, and we checked 55:10-11-8 in full. Confirm the electronic format with the authority having jurisdiction.
Renewal, lapse and retirement
Not addressed in the seal rule. OAC 55:10-11-8 says nothing about the seal on expiration, lapse, retirement or revocation, and nothing about whether a license number is reissued. There is one practical certainty: the 2026 change of the statutory title means a die cut under the previous registered interior designer wording no longer matches the legend the Act now prescribes.
Firm requirements
A Certificate of Authority is required for the entity under OAC 55:10-13-5 for any firm or entity to contract for or offer licensed services in Oklahoma, with 59 O.S. § 46.9 requiring an appropriately licensed principal and Board certification. The firm has no seal, and the Certificate of Authority number does not go on the face of a sealed document.
What to check before you order
Order a circular stamp carrying your name, your Oklahoma license number and the words Licensed Interior Designer, State of Oklahoma. That is the current statutory wording; if your existing die reads Registered Interior Designer it predates the 2026 Act and should be replaced. No diameter is prescribed, so size it for legibility and to leave room for the date, which goes across the face. Buy a rubber or self-inking stamp or use a compliant electronic image, because the rule requires a seal of a type that makes an image on original documents and on duplications of them. An embosser is not addressed by the rule and cannot meet that test, so do not order one as your legal seal. Seal, sign and date all technical submissions, the original cover sheet, the specification index page, and every addendum and field change.
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Frequently asked questions
Is a seal required for an Oklahoma licensed interior designer?
Yes. 59 O.S. § 46.42 requires each licensed interior designer to have a seal and requires technical submissions to be sealed, signed and dated, and OAC 55:10-11-8(a) requires every individual authorized to practice licensed interior design to procure a seal to identify all technical submissions, addenda, field orders and other documents of service issued for use in Oklahoma.
What goes on an Oklahoma interior designer seal?
Three items on a circle: your name, your Oklahoma license number, and the words Licensed Interior Designer, State of Oklahoma. Nothing provides for a firm name, an NCIDQ number, a Certificate of Authority number on the face or an expiration date, and an Oklahoma architect or landscape architect die does not transfer, because the legend names one profession.
My Oklahoma die says Registered Interior Designer. Is that still good?
It is stale wording. Oklahoma now licenses rather than registers interior designers, and § 46.42 prescribes Licensed Interior Designer, State of Oklahoma. The old wording was correct under the prior Act, and the practical answer is to replace the device rather than to rely on it.
What size is an Oklahoma interior designer seal?
No size is stated. Neither OAC 55:10-11-8 nor 59 O.S. § 46.42 gives a diameter, an inner circle or a lettering height. Size for legibility and for the date that has to go across the face.
Can I use an embosser as my Oklahoma seal?
Not as the required seal. OAC 55:10-11-8(a)(1) requires a seal of a type that makes an image on original documents and on duplications of them, and expressly permits a rubber stamp or an electronic image. An embosser is not mentioned, and the rule neither permits nor forbids one, but a dry impression does not reproduce and so cannot meet the test. A raised device can exist alongside a compliant stamp, without your name, number or legend on it.
Where does the date go on an Oklahoma sealed document?
Across the seal. OAC 55:10-11-8(c) requires the handwritten or electronically generated date to be affixed across the seal, alongside the signature, on all technical submissions and on the original cover sheet and the page identifying all specification pages covered, including addenda and field changes.
Which Oklahoma documents get the seal?
All technical submissions, addenda, field orders and other documents of service issued for use in Oklahoma, plus the original cover sheet and the page identifying all specification pages covered.
What can an Oklahoma licensed interior designer seal for?
Scope is the part to check before the stamp. Section 46.42 frames the responsible-control limit with exceptions tied to architect-prepared work and to specified Code Use Groups, so which building occupancies you may seal for is governed by the Act rather than by the seal rule. Confirm the occupancy before sealing, and note that § 46.42 also bars sealing work not prepared by you or under your responsible control.
Can I seal Oklahoma submissions electronically?
Yes. An electronic image of the seal is permissible under OAC 55:10-11-8(a)(1), and an electronically generated date is accepted under (c). The rule names no certificate authority, cryptographic standard or authentication procedure, so confirm the electronic format with the authority having jurisdiction.
What happens to my Oklahoma seal if the license lapses?
OAC 55:10-11-8 says nothing about the seal on expiration, lapse, retirement or revocation, and nothing about whether a license number is reissued. The one practical certainty is the wording change: a die cut under the previous registered interior designer legend no longer matches what the Act prescribes.
Does my Oklahoma firm need a Certificate of Authority?
Yes, for the entity. OAC 55:10-13-5 requires a Certificate of Authority for any firm or entity to contract for or offer licensed services in Oklahoma, with 59 O.S. § 46.9 requiring an appropriately licensed principal and Board certification. The firm has no seal, and the Certificate of Authority number does not go on the face of a sealed document.
