South Carolina, Lexington County HVAC Permit Regulations and County Ordinances for Unincorporated Areas

Lexington County HVAC Permit Requirements

In Lexington County, South Carolina, a building permit is required for the installation, enlargement, renovation, conversion, or replacement of any mechanical system, including HVAC systems. This applies to properties within the unincorporated areas of the county and the town limits of Chapin, Gilbert, Summit, Pine Ridge, and Swansea.

The Building Codes Ordinance in Lexington County is designed to ensure structural strength, safety, sanitation, adequate light and ventilation, and protection from fire and other hazards.

Unincorporated Areas

For properties in unincorporated areas of Lexington County, the Building Codes Ordinance and the Zoning Ordinance are applicable. Any construction or modification, including HVAC work, must comply with these regulations.

Homeowners can apply for their own building permits under specific conditions, including agreeing to reside in the home for a minimum of 24 months after the final inspection and filing a disclosure statement. However, it is generally recommended that homeowners have their licensed contractor obtain the permit, as the homeowner will be held responsible for any deficient work if they obtain the permit themselves.

When applying for a permit, detailed plans may be required, including HVAC scope, along with supporting documentation such as contractor license information and property details.

Permit Application: Applications are available on the county website or at the Building Inspections Office.
Contact Information: For general questions regarding building permits, you can contact the Building Inspections Division at (803) 785-8130 or by email at [email protected].

Resources to Learn More

Note: The following state-wide building codes and regulations apply universally to all jurisdictions within South Carolina, including Lexington County.

South Carolina Hvac Legislation, Codes, and Guidelines

State Statutes and Adopted HVAC Codes

In South Carolina, building codes are mandated by the state legislature and enforced at the local level. The state utilizes the International Code Council (ICC) family of codes as the foundation for its statewide standards. As of the most recent major update effective January 1, 2023, South Carolina has adopted the 2021 editions of the International Codes, including the International Mechanical Code (IMC) and the International Residential Code (IRC), with specific South Carolina-approved modifications. These codes establish the minimum requirements for the design, installation, maintenance, and inspection of HVAC systems in residential, commercial, and industrial buildings.

Primary State Agency

The South Carolina Building Codes Council is the primary state body responsible for adopting, modifying, and overseeing the implementation of these building codes. The Council, which operates under the South Carolina Department of Labor, Licensing and Regulation (LLR), reviews ICC code editions and determines necessary state-specific amendments to address local environmental and construction conditions. While the Council sets the standards, the actual enforcement of these codes is carried out by local jurisdictions (cities and counties), which are required to employ certified building officials to conduct plan reviews and field inspections.

Resources to Learn More

Select a City in Lexington County

If your project is located within incorporated city limits, you will likely need to follow municipal ordinances rather than county rules. Select your city below to view local regulations.

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