Written by Acorn Sales Company, manufacturing stamps and seals since 1964 · Reviewed by Holly R, VP of Sales and Marketing at Acorn Sales, against no board: the District licenses no geologists, so the sources are the DLCP license category list, D.C. Official Code 47-2853.06 and the DCMR Title 17 chapter list on 22 September 2026 · Updated 22 September 2026
The District of Columbia does not license, register or certify geologists, and no District agency issues or prescribes a geologist seal. The Department of Licensing and Consumer Protection publishes the full list of occupational and professional license categories it issues, and there is no geologist category on it. D.C. Official Code § 47-2853.06 establishes eight licensing boards, none of them over geology. DCMR Title 17 has chapters for professional engineers and land surveyors, architects, interior designers and landscape architects, and no chapter for geologists.
That has two consequences. Geological content reaching a District permit or filing travels under someone else’s seal, normally a District licensed professional engineer’s. And nothing about your own stamp is prescribed: no diameter, no legend, no approved artwork, no filing step. The one real limit is honesty in wording. Do not letter a District credential onto a die when the District issues none. This page is a reading of public sources and is not legal advice.
District of Columbia geologist seal requirements at a glance
| Requirement | District of Columbia rule | Source |
|---|---|---|
| Seal required | Not licensed here. The District issues no geologist license and prescribes no geologist seal. | DLCP occupational and professional license categories |
| Required elements | Not applicable. No District rule lists elements for a geologist seal. | DCMR Title 17 chapter list, dcregs.dc.gov |
| Size and shape | Not applicable. | DCMR Title 17 chapter list, dcregs.dc.gov |
| Device allowed | Not applicable. | DCMR Title 17 chapter list, dcregs.dc.gov |
| Signature and date | Not applicable. | DCMR Title 17 chapter list, dcregs.dc.gov |
| What must be sealed | No District document calls for a geologist seal. Commercial plans bear the seal and signature of a design professional licensed in the District. | DOB ProjectDox Application Prescreening Guide |
| Electronic seal | Not applicable. The digital signature standard at DCMR 17-1516.10 belongs to engineers and land surveyors. | DCMR 17-1516.10 |
| Renewal and lapse | Not applicable. There is no District geologist license to renew or let lapse. | DLCP occupational and professional license categories |
| Firm requirements | Not applicable. The professional design firm license covers architecture, interior design and landscape architecture only. | D.C. Official Code 47-2853.65 |
| Regulator | No board. D.C. Official Code 47-2853.06 establishes eight boards and none regulates geology. | D.C. Official Code 47-2853.06 and the DLCP license category list |
Is a geologist seal required in the District of Columbia?
No, and it could not be. A seal requirement is an instruction to a licensee, and the District licenses no geologists. DLCP publishes its license categories board by board. Under the Board of Professional Engineers they are Land Surveyor, Professional Engineer and Professional Engineer with a structural designation. Under the Board of Architecture, Interior Design, and Landscape Architecture they are Architect, Interior Design, Landscape Architect and Professional Design Firm. Geologist appears on no board’s list, and D.C. Official Code § 47-2853.06 gives geology to no board.
What a District seal rule looks like, for comparison
It helps to see the thing geologists do not have. DCMR § 17-1516.4 tells an engineer or land surveyor exactly what goes on the die: the words District of Columbia, the licensee’s name, the license number, and the words Professional Engineer or Professional Surveyor as appropriate, plus anything else the Board asks for. DCMR § 17-3214.1 tells a licensed interior designer to procure a seal carrying the name, the license number and the words LICENSED INTERIOR DESIGNER-DISTRICT OF COLUMBIA. For geology there is no counterpart section, chapter or board.
Who seals geological work in the District
The engineer whose work product carries it. The Department of Buildings prescreening guide states that all commercial plans must bear the seal and signature of a design professional licensed in the District, and that all residential structural plans must bear the seal and signature of a professional engineer licensed in the District. The Department’s commercial plan checklist requires structural calculations prepared, stamped and signed by a District licensed civil engineer, structural engineer or architect. A boring log, a settlement analysis or a groundwater discussion supporting those documents is part of the engineer’s submission.
Size and shape of a District of Columbia geologist stamp
Not applicable. There is no prescribed size because there is no prescribed seal. Worth noting: the District prescribes no diameter even where it does license. DCMR § 17-1516 lists what an engineer’s seal must carry and says nothing about how big it is or whether it is round. So a geologist ordering a device here is not working around a rule; there is no rule. The round dies we cut most often for unregulated professional devices run between 1-1/2″ and 2″, and rectangular blocks around 2-1/2″ by 1″, which is a legibility judgment from our own production and nothing more.
Embosser, rubber stamp or digital file
Not applicable. With no District credential there is no required instrument, so the choice is about how the mark gets used. Ink survives scanning and photocopying in a way an embossed impression does not. An embosser reads as ceremonial and reproduces poorly on a scan. A vector image is what most geologists actually need now, because reports move as PDFs. None of the three is preferred or disallowed here, because the District says nothing about a geologist’s mark at all.
Signing and dating a geologist report here
Not applicable as a District requirement. No District rule prescribes a signature or date for a geologist, because none prescribes a geologist seal. Signing and dating remains good practice and is often required by contract, by a client’s quality program, or by the licensing law of a neighboring jurisdiction whose credential you hold. Those outside rules follow the work into the District only as a matter of that jurisdiction’s law, not because the District adopted them.
Which documents must be sealed in the District
None of them carry a geologist seal. The documents that do carry seals are the ones DCMR § 17-1516.3 names for engineers and surveyors: all final engineering specifications, reports, drawings, plans, design information and calculations, or land surveys, reports, plats, drawings, plans and calculations, whenever presented to a client or any public agency to certify that the work was done by the licensee or under the licensee’s control. That is a wide net, and a geological report delivered inside an engineering scope falls within it and is sealed by the engineer.
Electronic and digital seals
Not applicable. The District does have a digital signature standard, at DCMR § 17-1516.10, but it is written for engineers and land surveyors. It requires an authentication procedure with a unique signature, a capability to verify the source, sole control by the person using it, and a link to the document such that the signature is invalidated if any data changes, plus a list of the hardware, software and parameters used. A geologist has nothing to comply with there, and a stamp image in a PDF carries no District authority.
Renewal, lapse and retirement
Not applicable. There is no District geologist license to renew, to let lapse, to place on inactive status or to have revoked, so no expiration date drives a reorder. Compare the professions the District does license: an engineer or land surveyor renews by 31 August in even numbered years, an interior designer by 31 October in even numbered years, and a landscape architect by 30 April in odd numbered years. If your stamp shows a credential from another jurisdiction, that jurisdiction’s expiration is the one that matters.
Firm requirements
Not applicable. The District issues no certificate of authorization for geological services. It does license design firms, but narrowly. D.C. Official Code § 47-2853.65 requires a professional design firm license before a firm, franchise, partnership, association or corporation offers or performs professional design services, and § 47-2853.64 defines those as architecture, interior design or landscape architecture services provided in the District. Geological consultancies sit outside that definition.
What to check before you order
The only real risk is a die that claims something untrue. Do not order a device reading Professional Geologist, District of Columbia, or Licensed Geologist, District of Columbia. That construction copies the legend pattern the District uses for professions it does license and asserts a credential the District does not grant. Put on it what is true of you: your name as you use it professionally, your firm name, a monogram or logo, and the exact title of any credential you hold with the issuing jurisdiction named next to it. If you are also a District licensed engineer, order that seal to DCMR § 17-1516.4 and keep it separate. For artwork to approve before anything is cut, contact us.
Frequently asked questions
Does the District of Columbia require a geologist to have a seal?
No. The District issues no geologist license, so there is no number to inscribe, no legend to letter and no document that calls for the device. The DLCP license category list has no geologist category, and D.C. Official Code § 47-2853.06 establishes no board with authority over geology.
Is there a District professional geologist license I am missing?
No. Three District sources agree. The DLCP category list, organized board by board, has no geologist entry. The statute establishing the boards names eight and gives none of them geology. DCMR Title 17, which carries a chapter of rules for each licensed occupation, has no geologist chapter.
What can I put on a District of Columbia geologist stamp?
Whatever is true of you: your name as you use it professionally, your firm name, contact details, a monogram or logo, and the exact name of any credential you hold with the jurisdiction that issued it named alongside. No District element list governs it.
What should I keep off it?
Any wording that reads as a District credential. Professional Geologist, District of Columbia mirrors the legend pattern the District uses for professions it does license, such as LICENSED INTERIOR DESIGNER-DISTRICT OF COLUMBIA at DCMR § 17-3214.1, and has no District credential behind it.
What size and shape should a geologist stamp be here?
Any size and any shape, because the District prescribes none, and it prescribes no diameter even for the professions it licenses. The round dies we cut most often for unregulated devices run between 1-1/2″ and 2″, and rectangular blocks around 2-1/2″ by 1″, which is our own legibility judgment rather than a rule.
Who seals a geotechnical report submitted for a District permit?
The professional engineer whose work product includes it. The Department of Buildings requires commercial plans to bear the seal and signature of a design professional licensed in the District, and DCMR § 17-1516.3 puts the engineer’s seal on final engineering reports and calculations presented to a client or a public agency.
Does the District set an electronic seal standard for geologists?
No. The digital signature standard at DCMR § 17-1516.10 is written for engineers and land surveyors. A geologist has nothing to comply with there.
I hold a geologist license from another state. Should I order that seal?
Order it to that state’s own specification and use it for that state’s work. Bringing it into the District does not give it District force, and the District will not ask you for it.
I am also a District licensed professional engineer. Can I use one device?
No. Order your engineer seal to DCMR § 17-1516.4, which requires District of Columbia, your name, your license number and the words Professional Engineer, and keep it apart from anything identifying geological work. A combined legend would misdescribe both.
Does a geology firm need a District professional license?
No. The professional design firm license at D.C. Official Code § 47-2853.65 reaches architecture, interior design and landscape architecture only, and § 47-2853.64 defines the services that narrowly. General business licensing is a separate matter.
