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. § 46.34 on 21 September 2026 · Updated 21 September 2026
The date goes across the face of the seal. OAC 55:10-11-8(c) requires that “The handwritten or electronically generated date shall be affixed across their seal,” and (c)(1) requires all licensees to affix seal, signature and date to all technical submissions and to the original cover sheet and the page identifying all specification pages covered, including all addenda and field changes. No diameter is prescribed anywhere, so size the die for legibility and for that date written over it.
The device rule is a specification on the instrument rather than a ban on a category. OAC 55:10-11-8(a)(1) requires a seal “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.” An embosser is simply not addressed: the rule neither permits nor forbids owning one, but a dry impression does not make an image on duplications and so cannot be the seal the rule requires. Keep the required elements off any raised device so it cannot be mistaken for one.
The legend is prescribed identically in statute and rule and reads Licensed Landscape Architect, State of Oklahoma, with the shape given as a circle. One board runs architects, landscape architects and licensed interior designers, and OAC 55:10-11-8(a)(2) writes out all three legends in a single paragraph, so a practitioner holding two credentials needs two dies.
Oklahoma landscape architect seal requirements at a glance
| Requirement | Oklahoma rule | Source |
|---|---|---|
| Seal required | Yes | 59 Okla. Stat. § 46.34 |
| Required elements | Your name, Your Oklahoma license number, The words Licensed Landscape Architect, 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) specifies the instrument functionally and then names the devices: 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) requires that “The handwritten or electronically generated date shall be affixed across their seal,” and (c)(1) requires all licensees to affix seal, signature and date to all technical submissions and to the original cover sheet and the page identifying all specification pages covered, including all 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 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 § 46.34 confirms that the seal may be electronic. | 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, which requires one for any firm or entity to contract for or offer licensed services in Oklahoma, and 59 O.S. § 46.9 requires an appropriately licensed principal and Board certification of the entity. | 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?
59 O.S. § 46.34 provides that “Each landscape architect shall have a seal, the image of which shall contain the name of the landscape architect, the person’s license number and the words ‘Licensed Landscape Architect, State of Oklahoma’,” and requires technical submissions to be sealed, signed and dated. The board rule adds the practical duty: OAC 55:10-11-8(a) requires every individual authorized to practice landscape architecture by a License to procure a seal “with which to identify all technical submissions, addenda, field orders and other documents of service issued by the Licensee for use in this State.”
What must appear on the seal
- Your name
- Your Oklahoma license number
- The words Licensed Landscape Architect, State of Oklahoma
- A circle
The legend is prescribed identically in statute and rule and must read Licensed Landscape Architect, State of Oklahoma. Shape is prescribed as a circle. Nothing provides for a firm name, a Certificate of Authority number on the face, a CLARB number or an expiration date. If you also hold the Oklahoma architect or licensed interior designer credential from the same board, you need a separate die for each, because the legend names one profession. Do not reuse the Oklahoma engineering and surveying artwork from OAC 245:15-17-1(c); different board, different design, named commercial sizes.
Size and shape
No size is stated. Neither OAC 55:10-11-8 nor 59 O.S. § 46.34 gives a diameter, an inner circle or a lettering height for a landscape architect’s seal. The sources here are 55:10-11-8 in full and the three statutory seal sections. Size for legibility and for the date the rule requires you to write across the face.
Embosser, rubber stamp or digital
OAC 55:10-11-8(a)(1) specifies the instrument functionally and then names the devices: 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. It neither permits nor forbids owning one, but a dry embossed impression does not make an image on duplications of original documents and so cannot be the seal the rule requires. Section 46.34 separately confirms that the seal may be electronic. The safe buy is a rubber or self-inking stamp.
Signing and dating
OAC 55:10-11-8(c) requires that “The handwritten or electronically generated date shall be affixed across their seal,” and (c)(1) requires all licensees to affix seal, signature and date to all technical submissions and to the original cover sheet and the page identifying all specification pages covered, including all addenda and field changes. Section 46.34 states the same trio, sealed, signed and dated, and bars sealing submissions not prepared by or under the landscape architect’s responsible control except for coordinated work from other licensed professionals.
One board, three legends, and no diameter for any of them
Oklahoma runs architects, landscape architects and licensed interior designers through one board and one seal rule. OAC 55:10-11-8(a)(2) writes out all three legends in a single paragraph, and the only thing that changes is the profession named. A practitioner holding two of those credentials needs two dies.
Which documents must be sealed
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. The scope boundary matters for this profession: 59 O.S. § 46.21 exempts a range of work from landscape architecture licensure, including licensed engineers performing incidental landscape services, landscape contractors, agricultural professionals and single-family residential work. Work inside an exemption needs no landscape architect seal; work outside one does.
Electronic and digital seals
An electronic image of the seal is permissible under OAC 55:10-11-8(a)(1), and § 46.34 confirms that the seal may be electronic. An electronically generated date is accepted alongside a handwritten one under 55:10-11-8(c). Beyond that the rule names no certificate authority, no cryptographic standard and no authentication procedure, and we checked 55:10-11-8 in full. Confirm the format with the authority having jurisdiction before relying on it.
Renewal, lapse and retirement
Not addressed in the seal rule. OAC 55:10-11-8 does not say what becomes of the seal on expiration, lapse, retirement or revocation, and does not say whether a license number is reissued. Because the legend asserts current licensure and the number is cut into the die, treat a lapse as making the device unusable. Renewal and reinstatement sit elsewhere in the Act and in OAC title 55 chapter 10.
Firm requirements
A Certificate of Authority is required for the entity under OAC 55:10-13-5, which requires one for any firm or entity to contract for or offer licensed services in Oklahoma, and 59 O.S. § 46.9 requires an appropriately licensed principal and Board certification of the entity. The firm has no seal. Neither the Act nor the seal rule requires the Certificate of Authority number 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 Landscape Architect, State of Oklahoma. No diameter is prescribed, so size it for legibility and to leave room for the date, which goes across the face of the seal. Buy a rubber or self-inking stamp or use a compliant electronic image: the rule requires a seal of a type that makes an image on original documents and on duplications of them, and names those two forms as permissible. An embosser is not addressed by the rule and cannot meet the reproduction 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.
Browse landscape architect stamps and seals.
Frequently asked questions
Is a seal required for landscape architects in Oklahoma?
Yes. 59 O.S. § 46.34 provides that “Each landscape architect shall have a seal, the image of which shall contain the name of the landscape architect, the person’s license number and the words ‘Licensed Landscape Architect, 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 landscape architecture by a License to procure a seal “with which to identify all technical submissions, addenda, field orders and other documents of service issued by the Licensee for use in this State.”
What has to appear on an Oklahoma landscape architect seal?
Your name, your Oklahoma license number, the words Licensed Landscape Architect, State of Oklahoma, and the shape is prescribed as a circle. Nothing provides for a firm name, a Certificate of Authority number on the face, a CLARB number or an expiration date. Do not reuse the Oklahoma engineering and surveying artwork from OAC 245:15-17-1(c), which is a different board with a different design and named commercial sizes.
What size is an Oklahoma landscape architect seal?
No size is stated. Neither OAC 55:10-11-8 nor 59 O.S. § 46.34 gives a diameter, an inner circle or a lettering height for this seal. Size for legibility and for the date the rule requires you to write across the face.
Can I use an embosser in Oklahoma?
The rule does not mention one. It neither permits nor forbids owning an embosser, but the seal it requires has to make an image on original documents and on duplications of them, and a dry embossed impression does not, so it cannot serve as your legal seal. A rubber or self-inking stamp is the safe buy, and an electronic image is expressly permissible.
Where does the date go on an Oklahoma seal?
Across the seal. OAC 55:10-11-8(c) accepts a handwritten or electronically generated date and requires it affixed across the face. Section 46.34 states the same trio, sealed, signed and dated.
Which Oklahoma documents have to be sealed?
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. Section 46.34 bars sealing submissions not prepared by or under your responsible control, except for coordinated work from other licensed professionals.
What work is exempt from Oklahoma landscape architect licensure?
59 O.S. § 46.21 exempts a range of work, including licensed engineers performing incidental landscape services, landscape contractors, agricultural professionals and single-family residential work. Work inside an exemption needs no landscape architect seal; work outside one does.
Can I use an electronic seal in Oklahoma?
Yes. An electronic image of the seal is permissible under OAC 55:10-11-8(a)(1), and § 46.34 confirms that the seal may be electronic, with an electronically generated date accepted alongside a handwritten one under 55:10-11-8(c). Beyond that the rule names no certificate authority, no cryptographic standard and no authentication procedure, so confirm the format with the authority having jurisdiction before relying on it.
Do I need separate dies for Oklahoma architect and landscape architect credentials?
Yes. The legend names one profession, and OAC 55:10-11-8(a)(2) writes all three of this board’s legends into a single paragraph with only the profession changing. Holding two credentials means two devices.
What happens to an Oklahoma seal on lapse?
The seal rule does not say what becomes of the device on expiration, lapse, retirement or revocation, and does not say whether a license number is reissued. Because the legend asserts current licensure and the number is cut into the die, treat a lapse as making the device unusable. Renewal and reinstatement sit elsewhere in the Act and in OAC title 55 chapter 10.
Does an Oklahoma landscape architecture firm need a Certificate of Authority?
Yes. OAC 55:10-13-5 requires one for any firm or entity to contract for or offer licensed services in Oklahoma, and 59 O.S. § 46.9 requires an appropriately licensed principal and Board certification of the entity. The firm has no seal, and neither the Act nor the seal rule requires the Certificate of Authority number on the face of a sealed document.
