If you hold a contractor license and want to work across a state line, the single most valuable question is whether the two states have a reciprocity agreement. Where one exists, the destination state typically waives its trade exam for licensees in good standing — often the slowest, most failure-prone step of getting licensed somewhere new. Where none exists, you start over.
Mapping the current agreements across five trades produces around 240 state-to-state edges, and the pattern is not what most contractors expect. Reciprocity is not a national web. It is a handful of dense regional clusters with near-empty space between them. This guide lists every agreement in the dataset, trade by trade, and then reads the map: where the clusters are, which states are hubs, and what reciprocity actually gets you.
What reciprocity does — and what it doesn't
A reciprocity agreement is narrower than its reputation. In most states it waives the trade examination for an applicant who holds an equivalent, active license in the partner state, usually with conditions: a minimum number of years licensed, a license in good standing, sometimes passage of a state-specific law-and-business exam anyway.
What it almost never waives: the application itself, the fees, the bond, the insurance requirements, or the state's own paperwork timeline. Reciprocity compresses the hardest step; it does not make licensing free or instant. And agreements are trade-specific — two states can recognize each other's electricians and ignore each other's plumbers entirely.
The southeastern compact
The densest cluster on the map is the Southeast. Alabama, Arkansas, Louisiana, Mississippi, Tennessee, Georgia, and the Carolinas recognize one another in overlapping combinations across nearly every licensed trade. Tennessee alone lists nine general-contractor partners: Alabama, Arkansas, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Virginia, and West Virginia. South Carolina matches it with nine of its own, reaching as far as Texas and Utah.
For a contractor based anywhere in that block, the practical read is that the Southeast functions close to a single licensing market: one earned license plus paperwork opens most of the neighboring states. For anyone selling to contractors — suppliers, insurers, lenders — the same fact explains why southeastern firms so often carry licenses in three or four states at once.
Utah, the electrical hub
For electrical work, one state towers over the map: Utah recognizes 20 states — Arizona, California, Colorado, Idaho, Iowa, Louisiana, Maine, Minnesota, Montana, Nebraska, Nevada, New Hampshire, New Mexico, North Dakota, Oklahoma, Oregon, South Carolina, South Dakota, Vermont, and Wyoming. Arkansas (16 partners) and Colorado (14) anchor the same mountain-west and plains web.
The consequence runs in both directions. An electrician licensed in a small plains state has a fast path into Utah's construction boom, and a Utah master electrician can move toward most of the western U.S. without retesting. Electrical is the most reciprocal trade in the country — 32 states hold at least one agreement, versus 12 for roofing.
General contractor reciprocity, state by state
Fifteen states hold GC agreements. Each line lists the states whose general-contractor licensees the named state recognizes (conditions vary; confirm with the board).
Alabama — Arkansas, Louisiana, Mississippi, North Carolina, Tennessee. Arizona — California, Nevada, Utah. Arkansas — Alabama, Louisiana, Mississippi, Tennessee. California — Arizona, Louisiana, Nevada, North Carolina. Florida — Louisiana, Mississippi, North Carolina. Georgia — Louisiana, Mississippi, South Carolina. Louisiana — Alabama, Arkansas, Mississippi, Tennessee, Utah. Mississippi — Alabama, Arkansas, Florida, Georgia, Louisiana, North Carolina. Nevada — Arizona, California, Utah. North Carolina — Alabama, Florida, Georgia, Louisiana, Mississippi, South Carolina, Tennessee. South Carolina — Alabama, Georgia, Louisiana, Mississippi, North Carolina, Ohio, Tennessee, Texas, Utah. Tennessee — Alabama, Arkansas, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Virginia, West Virginia. Utah — Arizona, California, Louisiana, Nevada, South Carolina. West Virginia — Tennessee, Virginia. Pennsylvania — varies by municipality (no statewide GC license exists).
Electricians, state by state
The most reciprocal trade: 32 states hold at least one agreement.
Alabama — Georgia, Louisiana, Mississippi, North Carolina, Ohio, South Carolina, Tennessee, Virginia. Arizona — California, Nevada, Utah. Arkansas — Alabama, Alaska, Colorado, Louisiana, Minnesota, Mississippi, Montana, Nebraska, New Hampshire, New Mexico, Oklahoma, Oregon, South Dakota, Tennessee, Texas, Utah. California — Arizona, Louisiana, Nevada, North Carolina. Colorado — Alaska, Arkansas, Idaho, Iowa, Minnesota, Montana, Nebraska, New Hampshire, New Mexico, North Dakota, Oklahoma, South Dakota, Utah, Wyoming. Florida — Louisiana, Mississippi, North Carolina. Georgia — Alabama, Tennessee. Iowa — Colorado, Minnesota, Montana, Nebraska, North Dakota, South Dakota, Wyoming. Kentucky — Louisiana, Ohio, Virginia, West Virginia. Louisiana — Alabama, Arkansas, Mississippi, Tennessee, Utah. Maine — New Hampshire, Vermont. Massachusetts — New Hampshire. Minnesota — Colorado, Iowa, Montana, Nebraska, North Dakota, South Dakota, Wyoming. Mississippi — Alabama, North Carolina, Ohio, South Carolina, Tennessee. Montana — Idaho, Oregon. Nebraska — New Mexico. Nevada — Arizona, California, Utah. New Mexico — Colorado, Idaho, Montana, Nebraska, Oklahoma, Texas. North Carolina — Alabama, Florida, Georgia, Louisiana, Mississippi, South Carolina, Tennessee. Ohio — Tennessee. Oklahoma — New Mexico. Oregon — Arkansas, Idaho, Montana, Utah. South Carolina — Alabama, Georgia, Louisiana, Mississippi, North Carolina, Ohio, Tennessee, Texas, Utah. South Dakota — North Dakota. Tennessee — Alabama, Arkansas, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Virginia, West Virginia. Utah — 20 states (listed above). Vermont — Maine, New Hampshire. Virginia — Alabama, District of Columbia, Kentucky, Maryland, Ohio, West Virginia. Washington — Oregon. West Virginia — Tennessee, Virginia. Wyoming — Colorado, Idaho, Montana, South Dakota, Utah. Pennsylvania — varies by municipality.
Plumbers, HVAC, and roofing
Plumbers (20 states). The southeastern block again (Arkansas, Louisiana, Mississippi, Tennessee, the Carolinas, Florida, Alabama via partners), plus a northwestern triangle — Montana, Oregon, Idaho, and Washington recognizing one another in pairs — and one odd couple: New Jersey recognizes Delaware. Ohio recognizes Arkansas, Mississippi, South Carolina, and West Virginia.
HVAC (18 states). Ohio is the northern hub (Alabama, Kentucky, Louisiana, Mississippi, South Carolina, Tennessee, West Virginia), the Southeast does its usual dense mesh, and Virginia-Maryland form a mid-Atlantic pair.
Roofing (12 states). The thinnest map — largely the same southeastern names plus the Arizona-California-Nevada-Utah square. If you hold a roofing license outside those clusters, assume you are retesting.
A recurring footnote across all five trades: Pennsylvania appears on every list as “varies by municipality,” because Pennsylvania issues no statewide trade licenses at all — Philadelphia and Pittsburgh each run their own.
Reading the map like a business
For a contractor, the map is an expansion menu: the cheapest second state is one that already recognizes your license. A Tennessee GC choosing between expanding into Kentucky (no agreement) and Mississippi (agreement) is choosing between months of exam scheduling and a paperwork exercise.
For anyone selling to contractors, the map predicts where multi-state operators live. Firms in reciprocity clusters carry licenses in several states, which means the same business appears on several state boards — exactly what our state rosters show. If your territory spans a cluster, a multi-state list of licensed contractors across it reaches businesses that already work across those lines.
License-requirement facts in this guide draw on the US Contractor Licensing Dataset by GetTradeLicense (CC BY 4.0), verified against state sources between April and July 2026, plus the state boards we ingest directly. Rules change and reciprocity agreements get renegotiated — before acting on any single state's requirements, confirm with that state's licensing board. Where this guide and a board disagree, the board is right.