No single contractor's license works in all 50 states, but you do not always start from zero when you cross a state line. The NASCLA exam is accepted by a group of states in place of the trade-knowledge exam, and some states have direct reciprocity deals with each other. What reciprocity gets you is a shortcut past the exam, not a free pass: you still file a fresh application in the new state, pay its fees, post its bond, and often sit its own Business and Law exam. So moving or expanding across state lines is real work, just less of it than starting over. Which states reciprocate with which changes over time, so route the current specifics to the Contractor License Checker.
What reciprocity actually gets you
The word "reciprocity" oversells it a little. In practice it usually waives one piece, the exam, because your existing license or a national exam already proves your trade knowledge. It almost never waives the rest. When you enter a new state you typically still have to:
- Apply and pay the new state's fees.
- Post that state's bond and carry its required insurance.
- Register your business to operate in the new state.
- Often pass that state's Business and Law exam, because licensing law, liens, and contracts are state-specific.
So think of reciprocity as skipping the technical retest, not skipping the application. The exact pieces that carry over are state-specific.
The NASCLA exam
The NASCLA Commercial General Building Contractor exam is the closest thing the trades have to a portable credential. It is a single accredited exam of 115 questions over about five and a half hours, open-book, with a 70% pass mark, and a group of states accept it in place of their own trade-knowledge exam. Pass it once and you can use it to satisfy that step in every participating state, which is why contractors who work across state lines value it. Around a dozen and a half states accept NASCLA, and the roster changes, so check the current participating-states list rather than assuming. Passing NASCLA still does not license you anywhere on its own. Each state still wants its own application, fees, bond, background check, and often its own law exam.
Direct state-to-state reciprocity
Separate from NASCLA, some states have signed direct reciprocity agreements with each other, often between neighbors or within a region, that let a contractor licensed in one skip parts of the process in the other. These deals tend to be specific: they may apply only to certain license classifications, and some require you to have held your license for a minimum number of years first. Because they are negotiated state by state and change, there is no reliable national list. Check whether your current state has a deal with the state you are entering, and for which classifications, in the Contractor License Checker.
Trade licenses reciprocate separately
If you hold a trade license, electrical, plumbing, or HVAC, that reciprocity is a different question from general contractor reciprocity, and it has its own patchwork of agreements. Some states have journeyman and master reciprocity for specific trades; others make you re-test. Do not assume that because your GC license has a reciprocity path, your electrician's or plumber's license does too, or the other way around. Route each credential separately through Working in Your State.
The one credential that is truly nationwide
There is exactly one construction-related license that works the same in every state, and it is federal, not a contractor's license: EPA Section 608 certification for handling refrigerants. If you do HVAC or refrigeration work, your 608 card is valid nationwide because it comes from the EPA, not a state board. Everything else, general contracting and the state trade licenses, stops at the state line and has to be re-established under the new state's rules.
The move when you expand to a new state
When you actually take work across a state line, plan for more than the exam. You will usually need to register your business as a foreign entity in the new state, appoint a qualifying party who meets that state's experience and exam requirements, post a new bond, and carry insurance to its limits. Large firms do exactly this to enter new markets, and they plan the qualifier piece carefully because a company cannot legally operate in a licensed state without a valid qualifier attached. Line all of that up before you bid the first out-of-state job, not after.
Common questions
If I pass the NASCLA exam, am I licensed in every state?
No. Passing NASCLA satisfies the trade-knowledge exam in the states that accept it, but it does not license you anywhere by itself. Each participating state still requires its own application, fees, bond, insurance, background check, and often a separate Business and Law exam. NASCLA saves you from re-sitting the technical exam in each state, which is a real saving if you work across state lines, but it is one piece of the puzzle, not the whole thing. Check the current participating-states list before relying on it.
Does my contractor's license work in another state?
Usually not on its own. There is no national contractor's license, so a license from one state generally does not authorize work in another. Some states have reciprocity deals or accept the NASCLA exam that shorten the process, but you still apply, pay, and bond in the new state. Whether your specific state pairing has a reciprocity path, and for which classifications, is state-specific, so route it to the Contractor License Checker before you take out-of-state work.
Is there any license that works nationwide?
Only one construction credential is truly nationwide, and it is federal: EPA Section 608 certification for handling refrigerants. Because it comes from the EPA rather than a state board, a 608 card is valid in every state. Contractor licenses and the state trade licenses for electrical, plumbing, and HVAC all stop at the state line and must be re-established under each state's rules. If you need portability for general contracting, the practical tool is the NASCLA exam, not a single license.
Do I have to retake the exam if I move states?
Often not the whole thing, if the new state accepts NASCLA or has reciprocity with your current state, but you frequently still take that state's Business and Law exam. Trade-knowledge is portable through NASCLA or a reciprocity deal; licensing law, liens, and contract rules are state-specific and usually retested. And even where the exam is waived, the application, fees, bond, and insurance are not. Confirm exactly what carries over for your states in Working in Your State.
The honest bit
- Which states accept NASCLA and which states reciprocate with which are both moving targets, negotiated and revised over time and often limited to specific license classifications. This guide names the structure on purpose and does not list state pairings, because that list changes. Get the current answer for your states from the Contractor License Checker and the up-to-date NASCLA participating-states list.
- The NASCLA exam format described here (115 questions, about 5.5 hours, 70% pass, open-book) is the exam's own standard, not a per-state rule, but formats can be updated, so confirm on the current NASCLA materials before you sit it.
- This is general guidance, not legal advice. If you are building a multi-state operation, get the qualifier and foreign-entity registration right in each state before you bid there.
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