Building Safety in Lancaster County, SC (2026)
4 rules for unincorporated Lancaster County, South Carolina.
Verified from official government sources
Door Locking Hardware
Every commercial structure built in unincorporated Lancaster County without a certificate of occupancy, plus existing buildings with a monitored fire alarm or stored hazardous materials, must install a fire-official-approved key box under Code § 14-52. It must hold labeled keys to every locked point of egress, and noncompliance can cost a building its certificate of occupancy.
Lancaster County SC Commercial Key Box Rule
Significant RestrictionsLancaster County Code § 14-52
(a)Mandatory key boxes for all commercial structures. Any commercial structure which does not yet have a certificate of occupancy located in the County with the exception of those structures inside the incorporated limits of the City of Lancaster shall be equipped with an approved key box, installed at a location approved by the fire official. ... (h)Key box contents. The key boxes shall contai...
Building Permits
In unincorporated Lancaster County, a permit is required before you build, alter, renovate, relocate, remove or demolish any building, structure or appurtenance, and before you place or move a manufactured home. County Code Section 7-22 sets the scope; Section 7-24 makes it unlawful to start without an approved application. Incorporated municipalities enforcing their own permit ordinance are excluded.
Lancaster County Building Permit Rules
Some RestrictionsLancaster County Code §§ 7-22, 7-24(a)
(a)The provisions of this ordinance shall apply to the construction, alteration, renovation, relocation, removal and demolition of every building or structure or any appurtenances connected or attached to such buildings or structures.(b)The provisions of this ordinance shall further apply to the placement and/or movement to, from or within Lancaster County of any manufactured home, except movem...
Electrical Permits
Unincorporated Lancaster County requires an electrical permit under Section 7-25(a)(4) whenever electrical work isn't already covered by a building permit, and adopts the 2020 National Electrical Code with South Carolina amendments as the governing installation standard under Section 7-1.
Lancaster County Electrical Permit Rules
Some RestrictionsLancaster County Code § 7-1; § 7-25(a)(4)
National Electric Code, with South Carolina amendments; ... (4)Electrical permit.a.Required on all commercial and industrial projects. Building permit will cover electrical permit in these occupancies where multiple trades are doing work.b.Required on all residential or commercial projects when a building permit is not issued.
Plumbing Permits
Unincorporated Lancaster County requires a plumbing permit under Section 7-25(a)(5) for residential or commercial plumbing work done without a building permit, and adopts the International Plumbing Code, 2021 Edition with South Carolina amendments, as the installation standard under Section 7-1.
Lancaster County Plumbing Permit Rules
Some RestrictionsLancaster County Code § 7-1; § 7-25(a)(5)
International Plumbing Code, including Chapter One, with South Carolina amendments; ... (5)Plumbing permit.a.Required on all commercial and industrial projects. Building permit does cover plumbing installations in these occupancies where multiple trades are doing work.b.Required on all residential or commercial projects when a building permit is not issued.c.If any plumbing installation commenc...
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