California’s PE stamp requirements are set by Business and Professions Code 6764 and Title 16 of the California Code of Regulations, Section 411. Your stamp must be circular, at least one and a half inches in diameter, and must show one of three approved titles around the top, “State of California” around the bottom, and your name as licensed, your certificate number, and your branch of engineering in the center. You may only use it while holding an active license, and only on work you prepared or that was prepared under your responsible charge.
What the Stamp Must Contain
Section 411 of Title 16 lays out the required elements and arrangement. Every PE stamp issued in California must include:
- Across the top border, one of these three titles: “Professional Engineer,” “Registered Professional Engineer,” or “Licensed Professional Engineer.” All three are equally valid.1Legal Information Institute (LII) / Cornell Law School. California Code of Regulations Title 16, 411 – Seal and Signature
- Across the bottom border, “State of California.”
- In the center, your name exactly as it appears on the certificate the board issued, your certificate or authority number, and the branch of engineering in which you are licensed.
Business and Professions Code 6764 reinforces the center-field elements, requiring the stamp to show your name, certificate number, the legend “professional engineer,” and your branch.2California Legislative Information. California Business and Professions Code 6764 A variant like “Registered Engineer” without the word “Professional” is not on the approved list and can trigger a document rejection.
Shape, Size, and Impression
The stamp must be circular and no smaller than one and a half inches in diameter. The regulation sets a minimum only, not a maximum, so the sometimes-repeated claim of a 1½ to 2 inch range overstates the rule. The impression can be made with permanent ink, a permanent embossment, or an electronically generated representation. Whichever method you use, the result has to be legible on the document.1Legal Information Institute (LII) / Cornell Law School. California Code of Regulations Title 16, 411 – Seal and Signature
Signature and Date Are Separate Requirements
The stamp alone does not authenticate anything. You also have to sign and date the document. The signature can be handwritten or applied electronically. If you sign electronically, the signature has to comply with California’s digital signature rules, which require public entities accepting a digital signature to confirm that its security level fits the transaction and that the certificate format meets their interoperability needs.3Legal Information Institute (LII) / Cornell Law School. California Code of Regulations Title 2, 22005 – Criteria for Public Entities to Use in Accepting Digital Signatures Every stamped document must be signed and sealed so the work can be clearly attributed to the licensee in responsible charge.1Legal Information Institute (LII) / Cornell Law School. California Code of Regulations Title 16, 411 – Seal and Signature
You Must Hold an Active License
Only engineers holding an active license from the Board for Professional Engineers, Land Surveyors, and Geologists may use a PE stamp. Licenses run for two years from the assigned renewal date, with a current biennial renewal fee of $180 and a $90 penalty for late renewal during the delinquency period.4Board for Professional Engineers, Land Surveyors, and Geologists. Fee Schedule A license goes delinquent the day after the grace period expires, and an engineer with a delinquent license may not use a stamp. After five or more years of delinquency, renewal is no longer available and you have to go through the full application process for a new license.5Board for Professional Engineers, Land Surveyors, and Geologists. License Renewal Information
California does not currently require continuing education as a condition of renewing a PE license, though NCEES recommends 15 professional development hours per year as a national standard.6NCEES. CPC Tracking
Responsible Charge: Who Can Stamp What
An active license does not entitle you to stamp any engineering document that reaches your desk. BPC 6703 defines “responsible charge” as independent control and direction of the engineering work, using initiative, skill, and independent judgment. The statute specifically notes that responsible charge does not refer to financial responsibility, so paying for a project does not make you its engineer of record.
For civil engineering, BPC 6735 requires that all plans, calculations, specifications, and reports be prepared by, or under the responsible charge of, a licensed civil engineer.7California Legislative Information. California Business and Professions Code 6735 If you managed a team but did not exercise direct engineering control over the design, stamping those documents is a violation and one of the more common grounds for board discipline.
Documents That Require a Stamp
BPC 6735 sets the most detailed rules for civil engineering, including structural and geotechnical work. Civil engineering plans and specifications that are permitted or released for construction must carry the licensee’s signature, seal or stamp, and the date of signing and sealing. Final calculations and reports carry the same requirement. Interim documents, such as those marked “preliminary,” “not for construction,” or “for review only,” must still show the engineer’s name and license number, but do not require the full seal.7California Legislative Information. California Business and Professions Code 6735
Local building departments require stamped plans for permit applications, with the design meeting the California Building Standards Code in Title 24.8Division of the State Architect. Overview – Title 24 Building Standards Code as Adopted by the Division of the State Architect Public infrastructure projects such as roadways, bridges, and water systems routinely require stamped engineering reports and calculations, and geotechnical reports, stormwater management plans, and seismic evaluations typically require a licensed engineer’s stamp for regulatory review.
The Industrial Exemption and Its Civil Carveout
Not everything that looks like engineering work needs a PE stamp. BPC 6747 exempts manufacturing, mining, public utility, research and development, and other industrial companies from PE licensing requirements for engineers (including consultants, temporary workers, and contract employees) whose work is connected to the company’s own products, systems, or services. The exemption does not cover civil engineers or civil engineering work. If the job involves site grading, structural design for a building, or infrastructure serving the public, a licensed civil PE has to stamp the documents.
How Long to Keep Stamped Documents
California’s Business and Professions Code does not set a single universal retention period for stamped engineering documents. The relevant timeframe depends on the project and the overseeing agency. For construction work, the key benchmark is the 10-year statute of repose in Code of Civil Procedure 337.15, which bars lawsuits for latent defects in the design, specification, supervision, or construction of a real property improvement brought more than 10 years after substantial completion.9California Legislative Information. California Code of Civil Procedure 337.15 Most firms set retention policies to match or slightly exceed that window. Public agencies, regulatory bodies, and contract terms can impose longer periods for critical infrastructure or environmental projects.
Penalties for Stamp Violations
Board discipline runs on two tracks. Under BPC 6775, the board can publicly reprove a PE, suspend the license for up to two years, or revoke it for violations of the Professional Engineers Act or related law.10California Legislative Information. California Business and Professions Code 6775 The disciplinary guidelines in Title 16 Section 419 confirm reproval as the minimum and revocation as the maximum, and allow the board to require the engineer to reimburse investigation and enforcement costs.11Legal Information Institute (LII) / Cornell Law School. California Code of Regulations Title 16, 419 – Disciplinary Orders The violations that most often draw board action are stamping work not prepared under your responsible charge, failing to stamp documents that require it, and letting an unlicensed person use your seal.
Criminal exposure comes from BPC 6787, which makes it a misdemeanor to impersonate a licensed PE, use another engineer’s seal, signature, or license number, or practice engineering without a license where no exemption applies.12California Legislative Information. California Business and Professions Code 6787 California Penal Code Section 19 sets the default misdemeanor punishment at up to six months in county jail, a fine of up to $1,000, or both, which is the baseline exposure unless a specific statute sets a different penalty.
The practical consequences arrive faster than the legal ones. A building department that spots an improperly stamped plan set rejects the permit and the construction schedule slips. If a faulty stamped design contributes to a failure, the stamping engineer carries professional liability no insurance policy fully absorbs. Keep the stamp secured, use it only on work you personally controlled, and sign and date every document you seal.