Georgia, Union County HVAC Permit Regulations and County Ordinances for Unincorporated Areas

Union County Building & Safety Divisions

Union County, Georgia's Building and Development Department is responsible for issuing building permits, conducting inspections, and enforcing environmental regulations. They handle permits for properties located within unincorporated areas of the county. If a property is within an incorporated city, that city's building department is responsible for permits.

Rules for Properties in Unincorporated Areas

In unincorporated Union County, a building permit is required for various construction projects. These include, but are not limited to:

Examples of projects requiring a permit include commercial and residential buildings, mobile homes, RVs or tiny homes used as residences, garages, barns, renovations, decks, porches, additions, and modifications to electrical, HVAC, plumbing, or structural components. For HVAC systems specifically, permits are generally required for installations or modifications that affect major building systems, occupant safety, equipment capacity, gas or electrical connections, or penetrate the building envelope. This includes installing new systems, replacing older ones, extending ductwork, or adding new zones.

Projects generally exempt from requiring a building permit include roofing material changes, exterior siding changes, replacement of floor covering, painting, wallpapering, sidewalks, and driveways.

To obtain a permit, applicants typically need to submit basic property and project information, a licensed builder affidavit, a recorded plat with site plan and setbacks, the property deed, and a floor plan with a work description. Additional documents may be required depending on the project, such as culvert permits, DOT driveway permits, elevation certificates, engineered plans, septic permits, or erosion and sediment control plans.

Permits are valid for one year from the date of issue and may require renewal or a new permit if construction extends beyond that period. Permits and inspections are required before grading or starting a project.

Resources to Learn More

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

Georgia Hvac Legislation, Codes, and Guidelines

Georgia HVAC Building Codes and Legislation

In Georgia, building construction standards, including those for HVAC systems, are governed by the Uniform Codes Act. The state adopts mandatory minimum standard codes that apply to all construction across the state, regardless of whether they are locally enforced. These codes consist of national model codes published by the International Code Council (ICC) or other standard-setting bodies, supplemented by specific Georgia amendments.

Adopted Codes (Effective January 1, 2026)

As of January 1, 2026, the State of Georgia has adopted the following mandatory codes relevant to HVAC design, installation, and energy efficiency:

Primary State Agency

The Georgia Department of Community Affairs (DCA) is the primary agency responsible for the adoption and maintenance of the state's minimum construction codes. The DCA facilitates the State Codes Advisory Committee (SCAC), which reviews new model codes and proposes amendments. Final adoption of these codes is approved by the Board of Community Affairs.

Resources to Learn More

Select a City in Union 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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