PLS, RPLS, PS, PSM and LS are the letters states use for the license to practice land surveying.
Each state's law names its own — Professional Land Surveyor (PLS) in Massachusetts and Washington, Registered Professional Land Surveyor (RPLS) in Texas, Professional Surveyor and Mapper (PSM) in Florida — and all 50 states plus DC require surveyors to be licensed before serving the public.
Here is what each abbreviation means and which letters you can use before you're licensed.
What does PLS stand for?
PLS stands for Professional Land Surveyor.
States license under exactly that wording: Massachusetts's license is Professional Land Surveyor (PLS), California titles its license "Professional Land Surveyor" or "Licensed Land Surveyor," Washington's is professional land surveyor (PLS), and Oregon's is Professional Land Surveyor — also written "registered professional land surveyor."
"Professional Land Surveyor" also appears in O*NET's list of job titles surveyors report, alongside "Licensed Land Surveyor," "Registered Land Surveyor," "Land Surveyor" and "Staff Land Surveyor."
The NCEES Model Law — a template, not national law — lists "Professional Land Surveyor" as one of its equivalent names for the Professional Surveyor license.
When a posting asks for a PLS, it is naming the license: the credential all 50 states and DC require before a surveyor can provide services to the public, not a course certificate or a crew rank.
For the work behind the title, see our land surveyor career guide.
Why does Texas use RPLS and Florida PSM?
Because each state's own law writes the title, and Texas and Florida wrote different words.
Texas issues three surveying credentials: Surveyor-in-Training (SIT) certification, Registered Professional Land Surveyor (RPLS) registration, and a separate Licensed State Land Surveyor (LSLS) license.
The LSLS is its own license, open only to RPLSs, for surveying land in which the state or the Permanent School Fund has an interest.
Florida's statute calls the license "surveyor and mapper," shown in rule as Professional Surveyor and Mapper (PSM), and the intern title is "surveyor and mapper intern."
Board rule 5J-17.063 lists PSM among the accepted titles and abbreviations for a licensed Florida surveyor and mapper.
So a Florida posting asking for a PSM and a Texas posting asking for an RPLS are each naming the license that state's law requires before a surveyor can serve the public.
As for why the letters differ: the NCEES Model Law treats "Professional Land Surveyor," "Professional Surveyor and Mapper" and "Geomatics Professional" as equivalent names for its Professional Surveyor license.
The naming sits with each state's law — the Model Law is only a template, not national law.
Which states use PS, LS or RLS?
PS, LS and RLS are the same license in other wordings.
Professional Surveyor (PS) is another state's wording for it.
Arkansas titles the license Professional Surveyor (PS) and the intern credential Surveyor Intern (SI) — not PLS or LSIT.
Ohio's title is Professional Surveyor (P.S.), with Surveyor Intern at the intern stage.
Mississippi's are Professional Surveyor (PS) and Surveyor Intern (SI).
Michigan's license title is "Professional Surveyor," and its seal legend reads "Licensed Professional Surveyor" — not PLS.
LS shows up as an allowed abbreviation: Illinois lets a professional land surveyor use "P.L.S.," "L.S." or "Professional Land Surveyor."
Registered Land Surveyor — the wording behind "RLS" — is in O*NET's reported titles.
The "Registered" wording appears in state wording too: Massachusetts's statutory seal legend reads "Registered Professional Land Surveyor" even though its license title is PLS.
Oregon also writes its title as "registered professional land surveyor."
A few of the titles our research verified, state by state:
| State | License title (as the state writes it) | Intern title |
|---|---|---|
| Texas | Registered Professional Land Surveyor (RPLS) | Surveyor-in-Training (SIT) |
| Florida | Professional Surveyor and Mapper (PSM) | Surveyor and mapper intern |
| Massachusetts | Professional Land Surveyor (PLS) | Surveyor-in-Training (SIT), optional |
| California | Professional Land Surveyor (or Licensed Land Surveyor) | Land Surveyor-in-Training (LSIT) |
| Illinois | Professional Land Surveyor (may use "P.L.S." or "L.S.") | Surveyor Intern (S.I.) |
| Arkansas | Professional Surveyor (PS) | Surveyor Intern (SI) |
| Ohio | Professional Surveyor (P.S.) | Surveyor Intern |
| Mississippi | Professional Surveyor (PS) | Surveyor Intern (SI) |
The table is the range we verified, not the whole map.
What each board requires before it issues its title is the licensing half of the question — see our license requirements guide for the routes.
Is a chartered surveyor the same as a PLS?
No. A PLS is a state license, issued by a board under that state's law.
"Chartered" doesn't appear among the titles our research verified for the boards.
They license under each state's own wording: Professional Land Surveyor, Professional Surveyor, Registered Professional Land Surveyor, Professional Surveyor and Mapper.
The NCEES Model Law's list of equivalent names doesn't include it either.
The UK connection has one verified data point: the US–UK mutual recognition agreement on NCEES's international page applies to Chartered Engineers seeking a P.E. license, and that page lists no equivalent agreement for surveyors.
So chartered status earned elsewhere is not, on its own, a US surveying license.
US licensure runs through a state board's own education, exam and experience route.
NCEES Credentials Evaluations assesses foreign degrees for state boards, and NCEES tells surveyors to ask their state licensing board first whether an evaluation is needed.
If that is your situation, confirm the route with the board where you plan to practice before you take a job that requires the license.
Can you use the title before licensure?
The license letters come last.
Before licensure, in the states our research verified, the credential is an intern certificate in that state's own wording.
Texas issues a Surveyor-in-Training (SIT) certification, and California's intern-level credential is the Land Surveyor-in-Training (LSIT).
Oregon enrolls a Land Surveying Intern (LSI).
Arkansas and Mississippi issue Surveyor Intern (SI).
Florida's statute names the "surveyor and mapper intern," Illinois's intern title is Surveyor Intern (S.I.), and Massachusetts's optional intern certificate is the Surveyor-in-Training (SIT).
What those certificates don't do, under the NCEES Model Law, is authorize practice: an intern enrollment document does not authorize the holder to practice as a professional surveyor.
The model treats a person as practicing surveying if they represent themselves as a professional surveyor by verbal claim, sign, advertisement, letterhead, card or in any other way.
It also lets boards fine unlicensed people who practice or use the professional surveyor title, with each day of a continued violation a separate offense and the fine amount left to each state.
BLS's career picture is the same: entry-level surveyors often work under a licensed surveyor for several years before qualifying for a license, and some begin as surveying technicians and become licensed after many years of experience.
For your signature block and resume, the practical read is simple: put the intern letters your state actually issued, and add PLS, RPLS, PS or PSM only once that state's board issues the license.
Our LSIT certification guide covers how the in-training step works.
Career information, not legal or licensing advice — confirm the exact title and its requirements with the state licensing board that issues it.
Confirm the title with the board