Seal and stamp requirements: Landscape architects

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Seal/stamp requirements

Below are examples of the landscape architect seal/stamp design required by state law. Your seal/stamp must be produced in one of the formats shown, with:

  • Your name in place of “NAME” shown on the examples under the signature line.
  • Your certificate number in place of the row of zeroes.

Examples of vertical and horizontal formats of the Washington landscape architect stamp/seal.

No deviation from this design is proper or legal. The seal/stamp:

  • May be used in a horizontal or vertical format, and scaled as appropriate, provided it remains readable.
  • Can’t include a firm name.

Using your seal/stamp

The following rules apply to all work you prepare or supervise:

  • You must stamp or seal all of the following:
    • Technical submissions required for building permits, regulatory approvals, or construction drawings filed with authorities having jurisdiction.
    • Drawings prepared by you (on each sheet).
    • Specifications and other technical submissions (on the cover, title page, and all pages of the table of contents).
  • Your seal/stamp must include your signature and license expiration date. Your signature can be handwritten or a digitally-represented handwritten version. (Requirements may differ in local jurisdictions.)
  • If you use preprinted identification block tracing sheets, you may have the seal/stamp printed on the block at the time of manufacture. You must add your signature and expiration date to each sheet before print reproductions are made.
  • If you seal or stamp documents you have reviewed, you’re responsible to the same extent as if you had prepared them yourself.
  • You may use more than 1 seal/stamp on drawings and specifications, but it’s not necessary.

You may not use your seal/stamp:

  • If your license is expired, delinquent, revoked, or suspended.
  • On any drawings not prepared by you or your regularly employed subordinates, or not reviewed by you.

Frequently asked questions

How will my name appear on my license and wall certificate?

Your name will appear exactly as you entered it on your application.

How do I get my seal/stamp?

You may order one from any rubber stamp manufacturer.

Do I need to get a new stamp if mine says “Registered Landscape Architect?”

No. If you were licensed before July 2010, you may continue to use your existing registration stamp.

Can I use an electronically-produced seal?

Yes. However, you may want to check with the building official of the project you are going to be signing and stamping to find out if they accept electronic signatures.

Related laws and rules

More information

If you have more questions about seals, stamps, or wall certificates, email us at or call 360.664.1497.

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