Residential plumbing over $500 is licensed through the Residential Builders Commission, while commercial plumbing over $5,000 requires a separate Contractor's Licensing Board credential. A business holding one isn't automatically qualified for the other.
As of January 1, 2026, Carolinas AGC replaced the Municipal Association of South Carolina as the provider of master plumber trade certification. Older ad copy citing MASC is now referencing an authority that no longer issues the credential.
A $400 fixture repair and a $40,000 commercial repipe fall under completely different licensing rules in South Carolina. Generic "licensed plumber" messaging that doesn't distinguish job size misses the exact detail a comparison-shopping homeowner or property manager is checking.
Residential plumbing work exceeding $500 requires a license through the Residential Builders Commission
Commercial plumbing work at or above $5,000 must be performed by an SCMCB-licensed contractor
Carolinas AGC replaced MASC as the master plumber trade certification provider effective January 1, 2026
State capital, home to LLR's licensing boards, largest concentration of both residential and commercial plumbing licensees
Historic homes with aging fixtures and cast iron lines, coastal humidity accelerating corrosion and repair demand
Fast new-construction growth driving strong residential install demand, borders both North Carolina and Georgia
| Keyword | Category | Intent | Typical Job |
|---|---|---|---|
| South Carolina residential plumbing contractor license | Trust | High | — |
| emergency plumber Columbia SC | Emergency | High | $220–$580 |
| new home plumbing install Fort Mill | Geo/Install | High | $3,600–$8,400 |
| CAGC master plumber certified | Trust | Mid | — |
| commercial mechanical contractor plumbing SC | Commercial | High | $5,000–$40,000 |
| pipe repair Mount Pleasant | Geo/Install | High | $300–$2,200 |
Highest bids, price aware, wants a same day dispatched fix.
$21
$380
Ad copy references the exact license, residential or commercial, and the correct current certifying body, since South Carolina's split is defined by dollar value, not just job type.
$16
$12,500
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