Illinois · Landscape Architect seal requirements
Illinois Landscape Architect seal requirements: proper sizing, signing and sealing of documents
As of
Illinois registers landscape architects, and 225 ILCS 316/20(a) fixes the seal impression: the registrant's name, registration number and the words "Registered Landscape Architect, State of Illinois". The seal must be reproducible and may be computer generated; 68 Ill. Adm. Code 1275.ILLUSTRATION A requires plans, specifications and reports to be stamped when filed and permits the seal, signature and dates to be affixed electronically. No diameter is prescribed anywhere in the Act or the rule.
Illinois licenses structural engineers under a separate Act with its own seal rule (68 Ill. Adm. Code 1480.145); a structural engineer's seal is not the PE seal below. Note also that the license expiration date has to sit next to the seal — a detail that catches out-of-state filers. The governing statute is the Landscape Architecture Registration Act (225 ILCS 316), not the Illinois Landscape Architecture Act of 1989 (225 ILCS 315), which the ILCS chapter listing marks "(Repealed by P.A. 96-730)" but which is still widely quoted; Section 20 was last set by P.A. 102-284, eff. 8-6-21, and carries a scheduled repeal date of January 1, 2027. Part 1275 was last amended at 49 Ill. Reg. 8323, effective June 5, 2025. The Act does create a profession-specific board: 225 ILCS 316/10 defines "Board" as the Registered Landscape Architecture Registration Board, and 225 ILCS 316/33 has the Secretary appoint five members — four registered landscape architects and one public member — who "shall serve in an advisory capacity to the Secretary". Its duties under 225 ILCS 316/34 are to meet at least annually, elect a chairperson and vice chairperson, and supply expert advice when the Department asks for it; the registration itself is issued by IDFPR under 225 ILCS 316/35(6), and the seal rule in Part 1275 is the Department's.
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Illinois Landscape Architect seal
- Board
- Illinois Department of Financial and Professional Regulation, Division of Professional Regulation
- Seal requirements
- 225 ILCS 316/20; 68 Ill. Adm. Code 1275.ILLUSTRATION A
- Legend
- “Registered Landscape Architect, State of Illinois”
- Diameter
- No diameter is prescribed. 225 ILCS 316/20 states no dimension, and 68 Ill. Adm. Code Part 1275 was read in full: its only seal provision, Illustration A, gives the required wording and a suggested facsimile design and lettering as an image, with no stated dimension.
- Expiration date
- 225 ILCS 316/20(a) enumerates the seal impression's contents — name, registration number, and the words "Registered Landscape Architect, State of Illinois" — and no expiration date; Illustration A repeats the same three items and adds none.(225 ILCS 316/20(a); 68 Ill. Adm. Code 1275.ILLUSTRATION A(a))
- Signature date
- Neither the Act nor Part 1275 requires a date to be written on or beside the seal. Illustration A refers to dates only permissively, in saying that "the seal, signature and dates may be electronically affixed."(225 ILCS 316/20; 68 Ill. Adm. Code 1275.ILLUSTRATION A(a))
- City on seal
- No place of business, city or address appears among the seal contents in either the Act or the rule.(225 ILCS 316/20(a); 68 Ill. Adm. Code 1275.ILLUSTRATION A(a))
- "Every registered landscape architect shall have a reproducible seal, which may be computer generated, the impression of which shall contain the name of the registered landscape architect, the registered landscape architect's registration number, and the words 'Registered Landscape Architect, State of Illinois'. The registered landscape architect shall be responsible for his or her seal and signature as defined by rule."(225 ILCS 316/20(a))
- An architect, land surveyor, professional engineer or structural engineer licensed by the Department may affix his or her own seal to plans, specifications and reports prepared by or under his or her supervision in connection with the incidental practice of landscape architecture.(225 ILCS 316/20(b))
- "Plans, specifications and reports related to landscape architectural practice and prepared by the registered landscape architect, or under the registered landscape architect's supervision, shall be stamped with the seal when filed."(68 Ill. Adm. Code 1275.ILLUSTRATION A(a))
- "A landscape architect's registration must be in full force and effect in order to seal documents."(68 Ill. Adm. Code 1275.ILLUSTRATION A(a))
- "The seal, signature and dates may be electronically affixed."(68 Ill. Adm. Code 1275.ILLUSTRATION A(a))
- The rule supplies a suggested facsimile design and lettering for the seal as an illustration; it is offered as a suggestion, not as a mandatory layout.(68 Ill. Adm. Code 1275.ILLUSTRATION A(b))
Illinois landscape architect seal questions
What do licensees most often get wrong about Illinois seals?▾
Is the seal illustration in the rule binding? No — Illustration A calls the drawing a suggested facsimile design and lettering, so only the three items the text names (name, registration number, and the legend) are actually mandatory. (68 Ill. Adm. Code 1275.ILLUSTRATION A) Does an Illinois landscape architect need to seal a drawing prepared during a lapse? The seal may only be applied while the registration is in full force and effect, and sealing under a suspended, expired or revoked registration carries its own statutory penalty. (225 ILCS 316/85(a)(17); 225 ILCS 316/85(a))