Union County, NC Building Permits, Zoning & Septic Rules

Union County, North Carolina requires permits before most residential construction begins, with limited exceptions for qualifying minor work¹. The county's Building Code Enforcement Division handles permits for unincorporated land after zoning and water or septic clearance². Septic permits go through Union County Environmental Health, and only 27.3% of the county's soil rates free of severe limits for a conventional drain field³⁴.

At a glance

Building permit: Required before most construction, with limited exceptions for qualifying minor work¹
Zoning: Yes — Union County Development Ordinance covers unincorporated land; many towns zone their own areas separately⁵
Septic permit: Union County Environmental Health, On-Site Water Protection Program⁶
Owner-builder exemption: Yes — an owner may act as their own general contractor on a home they'll occupy, via a sworn affidavit; no sale or rental for 12 months⁷
Small-project permit exception: Qualifying work of $40,000 or less may be exempt, but structural, electrical, HVAC, roofing and other listed work is excluded¹
Tiny home (400 sq ft or less): Allowed statewide as a single dwelling under the NC Residential Code's tiny-house appendix, plus local zoning, septic and utility approval⁸
Agricultural exemption: A farmer may build for personal use on owned land used in the farming business, subject to the exemption's conditions⁹
Median property tax bill: About $2,298 a year at an effective rate near 0.6%¹⁰¹¹

Who to call

Building permits

Union County Building Code Enforcement Division

Residential and commercial building permits, inspections, and zoning administration (including the Development Ordinance and floodplain review) for unincorporated Union County

704-283-3816

[email protected]

500 N. Main St. Suite 47, Monroe, NC 28112

Septic permits

Union County Environmental Health – On-Site Water Protection Program

Soil/site evaluations, septic (on-site wastewater) permitting, construction authorizations, and inspections for Union County

704-283-3553

[email protected]

500 North Main Street, Monroe, NC 28112

Contact details are copied from each office’s official page and were checked against it on September 29, 2026.

Do you need a building permit in Union County, North Carolina?

Union County requires the permits called for by the North Carolina State Building Code before construction, reconstruction, alteration, repair, movement, removal or demolition begins¹. Qualifying work costing $40,000 or less may be exempt when it follows the current code, but the exception does not cover listed work involving load-bearing structures, plumbing design, heating or cooling, electrical systems, impermissible materials, roofing additions or the Fire Code¹. Submit a completed building permit application with zoning approval and either a water/sewer accessibility letter or a septic permit or waiver². Union County inspections follow permitted work as it progresses; an owner using the licensing exemption generally must be present unless an architect prepared and sealed the plans¹². A new, enlarged, altered or moved building cannot be occupied until the inspection department issues a certificate of compliance, although safe early occupancy may be allowed under a temporary certificate¹³.

Who is the Union County building department, and how do you reach them?

Union County Building Code Enforcement Division issues building permits and handles inspections for construction under county jurisdiction¹⁴². Applications and inspection scheduling use the county's online permitting service and require an account, while anyone can search permits without signing in¹⁵. Reach Building Code Enforcement at 500 N. Main St. Suite 47 in Monroe for permit questions². The division's zoning administrator enforces the Union County Development Ordinance, including property use, setbacks, violations and floodplain rules for unincorporated Union County². Residential permit cost is based on heated and unheated square footage, so ask the office to price the plans for a specific project². Jobs over $30,000 also require lien-agent and workers'-comp information².

Does Union County have zoning?

Yes — Union County has zoning, administered through its own Development Ordinance for parcels under the county's jurisdiction⁵. That ordinance governs the use of property, setbacks from property lines, and floodplain rules for unincorporated Union County². Union County's zoning jurisdiction does not include Fairview, Indian Trail, Lake Park, Marshville, Marvin, Mineral Springs, Monroe, Stallings, Unionville, Waxhaw, Weddington, Wesley Chapel or Wingate, so confirm the jurisdiction for a parcel before applying county rules². Bona fide farm property is exempt from county zoning for farm purposes, including a code-compliant residence occupied by the farm's owner, lessee or operator, but nonfarm uses remain subject to zoning¹⁶. Separately, a person in the farming business may use the general-contractor licensing exemption to construct or alter a building for personal use on land that person owns and uses in farming⁹.

How do septic permits work in Union County?

Union County Environmental Health's On-Site Water Protection Program performs soil and site evaluations, issues permits, and inspects on-site wastewater (septic) systems to prevent groundwater contamination and protect public health⁶³. Statewide, an improvement permit and construction authorization are required before you build, relocate, install or repair a wastewater system, unless you use the engineered-option or Authorized On-Site Wastewater Evaluator permit path¹⁷. The construction authorization is required both to install septic system components and to obtain your building permit, so a delay at Environmental Health can delay your building permit too³. A local health department inspection has to confirm the system was installed or repaired correctly before it can be covered or used¹⁸. Only 27.3% of Union County's soil is rated without severe limits for a conventional septic drain field, so budget for the chance of an engineered or alternative system on a given parcel⁴. A chemical or portable toilet can supplement a system during peak use but can't substitute for a properly connected wastewater system where the state code requires one, so there's no shortcut around permitting if you plan to live on the land¹⁹.

Can you live in an RV, tiny home or manufactured home on your land in Union County?

North Carolina's Residential Code allows a tiny house — defined as 400 square feet or less, excluding lofts — to be used as a single dwelling unit statewide, but local zoning, utility, septic and permit requirements still apply on top of that⁸. A manufactured home also needs a building permit before it's installed, altered, repaired or occupied, generally obtained by the licensed set-up contractor, and it still has to meet local zoning and land-use rules²⁰. Union County doesn't give a blanket answer for an RV used as a residence — confirm the rule for your specific parcel with the Building Code Enforcement Division if you're under county zoning, or with your town if you're in one of the municipalities the county doesn't zone²⁵.

Building a home in Union County: the steps, in order

Confirm whether Union County or a municipality has zoning jurisdiction over the parcel².
If the parcel lacks public sewer, apply to Union County Environmental Health for a soil/site evaluation and septic authorization before fixing the house location³.
Get zoning approval, then use the county's online permitting service to submit the building application; an account is required for applications and inspection scheduling²¹⁵.
Include the septic permit or waiver or the required water/sewer accessibility letter, plus lien-agent and workers'-comp information when the job exceeds $30,000².
Arrange inspections as work progresses; an owner using the licensing exemption generally must attend unless architect-sealed plans apply¹².
If temporary electrical service is needed during construction, apply and pay the $100 fee; the county allows one GFCI-protected receptacle for a 90-day request, requires the listed construction phases to be completed within that period and does not permit occupancy²¹²².
Obtain a certificate of compliance or temporary certificate of occupancy before moving in¹³.

What should you check before you buy land in Union County?

Test the soil before you count on a standard septic system: only 27.3% of Union County's soil rates free of severe limits for a conventional drain field, and Environmental Health's soil/site evaluation is the way to confirm a parcel before closing⁴³. Check whether the parcel is inside Union County's zoning jurisdiction or a municipality, since rules, setbacks and floodplain review differ by jurisdiction². If the land is used for farming, bona fide farm purposes are exempt from county zoning and, outside a municipality's building-rules jurisdiction, qualifying farm buildings are exempt from building-rule enforcement¹⁶²³. Farmland has recently traded around $6,148 an acre, and typical countywide home value is about $456,000²⁴²⁵. The effective property tax rate is near 0.6%, the median bill is about $2,298 a year, and a typical homeowner's insurance premium is near $1,307 a year¹¹¹⁰²⁶. The nearest city of 100,000 or more is about 21 miles from the county center; roughly 48.8% of the county is wooded, and about 97.4% has a slope of 15% or less²⁷²⁸²⁹.

Watch-outs

Union County zones unincorporated land itself, but Fairview, Indian Trail, Lake Park, Marshville, Marvin, Mineral Springs, Monroe, Stallings, Unionville, Waxhaw, Weddington, Wesley Chapel and Wingate all zone their own land, so confirm which jurisdiction covers a specific parcel before assuming county rules apply².
A septic construction authorization is required both to install septic system components and to obtain a building permit, so a delay at Environmental Health can delay your building permit too³.
Temporary electrical service during construction does not authorize occupancy, may be revoked and requires a $100 fee, an application, an affidavit and an inspection²¹²².
Occupying a new, enlarged, altered or moved building before the inspection department issues a certificate of compliance or temporary certificate of occupancy is a Class 1 misdemeanor¹³.

Sources

Written September 29, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

How Union County scores

Seclusion19100% ev.

Self-Sufficiency79100% ev.

Admin Boringness46100% ev.

Durability70100% ev.

Property Autonomy42100% ev.

Carry Cost70100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$456kTypical home

0.6%Property tax

$6,148Land / acre

43.6"Annual rain

2.2% of yrsSevere drought

9 / yr (+8.1)Mid-century 100°F days

14.7 daysMid-century dry spell

2.25" (+7.7%)Mid-century 1-day rain

1.4×Wildfire change factor

100%Forward climate coverage

$1,307Home insurance / yr

2.2% / yrInsurance growth

4.85%Nonrenewal rate

county median (2+ published ZIPs)Insurance basis

204,294People within 30 min

6,481,056People within 2 hr

291,664Radius comparison (15 mi)

405.3People / sq mi

0%Federal land

97.4%Land at 15% slope or less

27.3%Septic soil without severe limits

110,164 acWorkable land screen

48.8%Wooded land

66.4 tonsBiomass / forest ac

61.2°FAvg temp

Answers from the rulebook for Union County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Union County rules

Mandatory utility hookupConditional
Temporary electrical utility service during residential construction in Union County.
- The request is for 90 days.
- All phases of construction, including building, plumbing, mechanical, electrical, zoning, utilities, public works, and environmental health, must be complete within 90 days.
- Only one GFCI-protected receptacle is allowed.
- A $100 fee and completed application, affidavit, and inspection are required.
- Temporary service may be revoked at any time and the building may not be occupied until a certificate of occupancy is issued.
temporary service period: 90 days · application fee: 100 USD
“Requests for Temporary Electrical Utility Service is for 90-days”
Application for Temporary Electrical Utility ↗Re-checked Sep 26, 2026
Permit feesPublished (with conditions)
Union County temporary residential electrical utility service during construction.
- The fee applies to the temporary electrical utility application described in the county document.
- The application, affidavit, and inspection are also required.
temporary electrical utility application fee: 100 USD
“A $100 Fee is required when you submit this application”
Application for Temporary Electrical Utility ↗Re-checked Sep 26, 2026
Permit processPublished
Union County online development and building permitting process.
- An account is required for application submission and inspection scheduling.
- Permit search does not require login or account creation.
“An account is required for application submission and inspection scheduling.”
Union County Online Plan Review and Permitting Service ↗Re-checked Sep 26, 2026
County-wide zoningPresent
Zoning approval is required before a building permit is issued; parcels under the County's jurisdiction are zoned and reviewed through the Building Code Enforcement office.
Union County Building Code Enforcement ↗Scouted from the county site, not yet independently re-checked
Owner-builder exemptionAvailable
Under NC General Statute 87-1, a property owner may act as their own general contractor for a building intended solely for their own occupancy (via a verified affidavit; may not sell/rent for 12 months).
NC General Statutes 87-1 ↗Scouted from the county site, not yet independently re-checked

North Carolina rules that apply here

Building permitRequired
Construction, reconstruction, alteration, repair, movement, removal, or demolition of buildings and structures statewide in North Carolina.
- A person may not commence or proceed without first securing all permits required by the North Carolina State Building Code and other applicable State or local laws.
- The requirement is subject to the statutory exceptions in G.S. 160D-1110(c) and G.S. 160D-1110.1(h).
- For qualifying construction, installation, repair, replacement, or alteration costing $40,000 or less in a single-family residence, farm building, or commercial building, no Article 9 Chapter 143 permit is required if the work complies with the current North Carolina State Building Code, except for listed work involving load-bearing structures, plumbing design, heating or cooling, electrical systems, impermissible materials, roofing additions, or changes subject to the North Carolina Fire Code.
- A replacement water-heater connection in a one- or two-family dwelling may be exempt only under the statutory licensing, leak-test, capacity, location, fuel, venting, piping, and code-compliance conditions.
- Specified like-kind electrical-device and lighting-fixture replacements may be exempt only under the statutory same-voltage, same-or-less-amperage, licensing, and code-compliance conditions.
- The statute also provides specific exemptions for certain electric-power-supplier load-control equipment and other listed activities.
small-project cost threshold: <= 40000 USD (The exemption does not apply to the listed structural, plumbing-design, HVAC, electrical, impermissible-material, roofing-addition, or Fire Code work.)
“no person shall commence or proceed with any of the following without first securing all permits required by the North Carolina State Building Code”
G.S. 160D-1110. Building permits. ↗Re-checked Sep 12, 2026
One more reviewed finding on this topic
- Required — Construction, reconstruction, alteration, repair, movement, removal, or demolition of buildings and structures in North Carolina, including work within Union County.
  “no person shall commence or proceed with any of the following without first securing all permits required by the North Carolina State Building Code”
  G.S. 160D-1110. Building permits ↗Re-checked Sep 26, 2026
InspectionsRequired
Work performed under a North Carolina building permit, inspected by the applicable local inspection department.
- As permitted work progresses, local inspectors must make as many inspections as may be necessary to determine compliance with applicable State and local laws and permit terms.
- The inspection rule is subject to the limitation imposed by G.S. 160D-1104(d).
- For a permit obtained by an owner exempt from licensure under G.S. 87-1(b)(2), no inspection may be conducted without the owner present unless the plans were drawn and sealed by a licensed architect under Chapter 83A.
“as the work pursuant to a building permit progresses, local inspectors shall make as many inspections thereof as may be necessary”
G.S. 160D-1113. Inspections of work in progress. ↗Re-checked Sep 12, 2026
One more reviewed finding on this topic
- Required — Work performed under a building permit in Union County and statewide North Carolina.
  “as the work pursuant to a building permit progresses, local inspectors shall make as many inspections thereof as may be necessary”
  G.S. 160D-1113. Inspections of work in progress ↗Re-checked Sep 26, 2026
Certificate of occupancyRequired
Occupancy of a new building, an addition or enlargement of an existing building, or an existing building that has been altered or moved, when subject to a North Carolina building permit.
- At the conclusion of all work under a building permit, the appropriate inspector must make a final inspection.
- A certificate of compliance is issued if the completed work complies with applicable State and local laws and permit terms.
- A temporary certificate of occupancy may be issued for a stated period for the entire building or specified portions if the inspector finds safe occupancy before final completion and the North Carolina State Building Code conditions are met.
- Occupying or allowing occupancy before issuance of a certificate of compliance or temporary certificate of occupancy is a Class 1 misdemeanor.
“no new building or part thereof may be occupied [...] until the inspection department has issued a certificate of compliance.”
G.S. 160D-1116. Certificates of compliance; temporary certificates of occupancy. ↗Re-checked Sep 12, 2026
One more reviewed finding on this topic
- Required — Occupancy of new, enlarged, altered, or moved buildings in Union County and statewide North Carolina.
  “no new building or part thereof may be occupied [...] until the inspection department has issued a certificate of compliance.”
  G.S. 160D-1116. Certificates of compliance; temporary certificates of occupancy ↗Re-checked Sep 26, 2026
Zoning districtsPartial
North Carolina local governments that adopt zoning regulations under Chapter 160D; this claim does not establish that every jurisdiction has zoning or identify any jurisdiction's actual district map.
- A local government may divide its territorial jurisdiction into zoning districts of any number, shape, and area.
- The statute lists conventional, conditional, form-based, overlay, and charter-authorized districts as examples, not a mandatory statewide district scheme.
- Conditional districts require a petition by all owners of the property to be included and written consent to incorporated conditions.
- Regulations must be uniform within each district class or kind, although regulations may differ between districts.
- A zoning regulation or unified development ordinance may also include standards that apply uniformly jurisdiction-wide rather than only within particular districts.
“A local government may divide its territorial jurisdiction into zoning districts of any number, shape, and area deemed best suited to carry out the purposes of this Article. Within those districts, it may regulate and restrict the erection, construction, reconstruction, alteration, repair, or use of buildings, structures, or land.”
G.S. 160D-703. Zoning districts ↗Re-checked Sep 12, 2026
Tiny homesAllowed (with conditions)
Tiny houses used as single dwelling units under the North Carolina Residential Code.
- The tiny house must be used as a single dwelling unit.
- The tiny house must comply with the North Carolina Residential Code except where Appendix AQ provides otherwise.
- The code defines a tiny house as a dwelling of 400 square feet or less excluding lofts.
- Local zoning, land-use, utility, septic, and permit requirements may also apply.
maximum floor area excluding lofts: <= 400 square feet
“The provisions contained in this appendix are adopted as part of this code. SECTION AQ101 GENERAL AQ101.1 Scope. This appendix shall be applicable to tiny houses used as single dwelling unit. Tiny houses shall comply with this code except as otherwise stated in this appendix.”
2024 North Carolina Residential Code, Appendix AQ Tiny Houses ↗Re-checked Sep 12, 2026
Manufactured homesAllowed (with conditions)
Use and occupancy of manufactured homes installed in North Carolina.
- A building permit from the Building Official is required before installing, constructing, enlarging, altering, repairing, locating, improving, converting, or demolishing a manufactured home.
- Warranty repairs do not require a permit.
- The set-up contractor generally obtains the permit; a homeowner may obtain it on behalf of the installer if the licensed set-up contractor's name and license number appear on the permit.
- The setup contractor may not move the home to the site until the permit is in hand.
- The regulations apply to installation, alteration, repair, use, and occupancy of every manufactured home.
- New homes must be installed in accordance with the manufacturer's installation instructions, which must comply with 24 CFR Part 3285.
- Used homes manufactured before January 1, 2009 must be installed under the State Code; used homes manufactured on or after January 1, 2009 use the manufacturer's instructions if available or the State Code.
- Local zoning and land-use ordinances continue to apply, and local jurisdictions may not make the technical provisions more stringent without written consent of the Commissioner of Insurance.
- Electrical connections or equipment installed in the field require contact with the local authority having jurisdiction.
building permit before installation or other listed work: true (Warranty repairs do not require a permit.) · used-home manufacturing-date threshold: January 1, 2009 (Homes manufactured before this date follow the State Code; homes on or after this date follow manufacturer instructions if available or the State Code.)
“The provisions of this Code shall apply to the installation, alteration, repair, use and occupancy of every manufactured home and the installation thereof.”
State of North Carolina Regulations for Manufactured Homes, 2019 Edition ↗Re-checked Sep 12, 2026
Accessory dwellingsLimited
Accessory dwelling units in cities with a population of 50,000 or greater that are not in the coastal area, in areas zoned for residential use that allow single-family detached dwellings.
- The requirement applies only to cities with a population of 50,000 or greater that are not in the coastal area.
- The subsection requiring local governments to allow the ADU becomes effective January 15, 2027 and applies to applications for ADU permits on or after that date.
- Local governments must adopt implementing development regulations by July 1, 2027; if they fail to do so, ADUs must be allowed without limitations.
- The ADU must conform to the North Carolina Residential Code, including applicable fire-prevention-code provisions.
- The primary dwelling and ADU may be used for long-term rentals by separate households.
- A local government may not require conditional zoning, impose minimum parking requirements or other parking restrictions, prohibit connection to existing utility systems when the primary dwelling has capacity to serve both dwellings, charge fees exceeding those for a similar single-family dwelling permit, or set a maximum ADU size below 800 square feet or above 1,000 square feet.
- A local government may impose a setback of 10 feet or the generally applicable setback for the same zoning classification, whichever is less; require side or rear placement; and require the ADU to be smaller than the primary dwelling.
- The provision does not apply to private covenants or contractual dwelling-type restrictions, historic preservation districts, National Historic Landmarks, or ADUs not connected to water, well and septic, and sewer.
- After permitting, the parcel may not be subdivided so that the ADU and primary dwelling are on different parcels.
minimum maximum accessory dwelling unit size: 800-1000 square feet (A local government may not set a maximum size below 800 square feet or above 1,000 square feet.) · implementation deadline: July 1, 2027 (If the local government fails to adopt regulations by this date, ADUs must be allowed without limitations.)
“This section applies only to cities with a population of 50,000 or greater, that are not in the coastal area, as that term is defined in G.S. 113A‑103.”
Session Law 2026-59, Section 44 ↗Re-checked Sep 12, 2026
Who permits septicMixed
Statewide regulation and administration of wastewater and septic systems, including conventional and alternative on-site wastewater systems.
- Systems may be regulated by the Department under Commission rules, under engineered-option criteria, or under Authorized On-Site Wastewater Evaluator criteria.
- A local board of health may review and approve systems under local board rules when it adopts Commission rules by reference with more stringent modifications or additions and the Department determines those rules are sufficiently stringent.
- Local health departments issue improvement permits, construction authorizations, inspections, and operation permits in the ordinary local permitting process.
“A wastewater system subject to approval under rules of the Commission shall be reviewed and approved under rules of a local board of health”
G.S. 130A-335. Wastewater systems ↗Re-checked Sep 12, 2026
Septic permitRequired
Construction, location, relocation, installation, or repair of wastewater systems for residences, businesses, and public assemblies in areas not served by an approved wastewater system.
- An improvement permit and construction authorization are required before construction, location, relocation, installation, or repair unless the project uses the engineered option permit or Authorized On-Site Wastewater Evaluator permit option.
- The requirement does not apply to a manufactured residence exhibited for sale or stored for later sale and intended to be located at another site after sale.
- No improvement permit or construction authorization is required for maintenance of a wastewater system.
- The local health department may impose conditions on the permits.
“No improvement permit or construction authorization shall be required for maintenance of a wastewater system.”
G.S. 130A-336. Improvement permit and construction authorization required ↗Re-checked Sep 12, 2026
Septic inspectionRequired
Wastewater systems before they are covered, placed into use, or used to authorize occupancy.
- The local health department must inspect and determine installation or repair complies with the Improvement Permit, rules, and Article 11.
- An applicant may contract with an Authorized On-Site Wastewater Evaluator for required verifications or inspections and may cover or operate the system after receiving written verification, which must be submitted to the local health department within two business days.
- A certified Private Compliance Inspector may conduct qualifying compliance inspections when the statutory criteria are met.
- An operation permit is required before occupancy or placing the wastewater system into use or reuse.
“until an inspection by the local health department has determined that the system has been installed or repaired”
G.S. 130A-337. Inspection; operation permit required ↗Re-checked Sep 12, 2026
Off-grid sanitationLimited
Chemical and portable toilets and other sanitation arrangements used instead of or alongside permanent wastewater treatment systems.
- A chemical or portable toilet may be placed where it can be operated and maintained under sanitary conditions.
- It may not replace or substitute for a water closet or urinal connected to a permanent wastewater treatment system where the North Carolina State Building Code requires that permanent connection.
- It may supplement a water closet or urinal during periods of peak use.
- It may not be used as an alternative to repair of a water closet, urinal, or wastewater treatment system.
- Human waste may be discharged only into a wastewater system approved by the Department under Commission or Environmental Management Commission rules, or at a site permitted under G.S. 130A-291.1.
“A chemical or portable toilet shall not be used as an alternative to the repair of a water closet, urinal, or wastewater treatment system.”
G.S. 130A-335 PDF, subsection (h) ↗Re-checked Sep 12, 2026
Agricultural exemptionAvailable (with conditions)
Qualifying nonresidential farm buildings, primitive camps, and primitive farm buildings under North Carolina building rules.
- Building rules do not apply to farm buildings outside the building-rules jurisdiction of any municipality.
- Inside a municipality's building-rules jurisdiction, the exemption applies to greenhouses and therapeutic equine facilities.
- The exemption also applies to primitive camps and primitive farm buildings.
- A farm building means a nonresidential building or structure used for a bona fide farm purpose under G.S. 160D-903(a).
- Qualifying farm buildings remain subject to specified annual safety inspections for grandstands, bleachers, or other spectator-seating structures.
- A produce display and sale structure must be no more than 1,000 square feet, open to the public no more than 180 days per year, and certified as a Certified Roadside Farm Market.
- Certain agricultural storage buildings must be surrounded and adjoined by public ways and yards at least 60 feet wide and must display the required Ag. Exempt placard.
maximum produce-market area: <= 1000 square feet (Structure must also be open to the public no more than 180 days per year and certified by the Department of Agriculture and Consumer Services as a Certified Roadside Farm Market.) · minimum surrounding public ways and yards: >= 60 feet (Applies to qualifying agricultural storage buildings; required Ag. Exempt placard must also be posted.)
“Building rules do not apply to (i) farm buildings that are located outside the building-rules jurisdiction of any municipality,”
NC General Statutes Pertaining to the Enforcement of the NC State Building Code ↗Re-checked Sep 12, 2026
2 more reviewed findings on this topic
- Available (with conditions) — A person engaged in farming who constructs or alters a building on owned land used in farming, when the building is intended for that person's use, including in Union County.
  “land owned by that person and used in the business of farming, when the building is intended for use by that person after completion.”
  G.S. 87-1. General contractor defined; exceptions ↗Re-checked Sep 26, 2026
- Available (with conditions) — Bona fide farm property subject to county zoning, and qualifying bona fide farm property in a city's extraterritorial planning and development regulation jurisdiction.
  “County zoning regulations may not affect property used for bona fide farm purposes;”
  G.S. 160D-903. Agricultural uses ↗Re-checked Sep 12, 2026
Subdividing landRegulated (with conditions)
Subdivision regulation throughout North Carolina where a local government adopts subdivision regulations under Chapter 160D.
- A local government may regulate subdivision by ordinance within its planning and development regulation jurisdiction.
- The statutory definition generally covers divisions into two or more lots, building sites, or other divisions created for sale or building development, whether immediate or future, and divisions involving dedication of a new street or a change in existing streets.
- Excluded divisions include recombination of previously recorded lots without increasing the total number and meeting local standards; divisions into parcels greater than 10 acres with no street right-of-way dedication; public acquisition of strips for streets or transportation corridors; certain divisions of a tract no greater than 2 acres into not more than three lots with no street dedication and compliant resultant lots; and divisions under a probated will or intestate succession.
- For certain single-owner tracts greater than 5 acres, a local government may require only a plat for recordation if the tract was not divided under the statutory provision during the prior 10 years, no more than three lots result, resultant lots comply with applicable lot-dimension and zoning requirements, and permanent ingress and egress is recorded for each lot.
- After a subdivision regulation is adopted, a subdivision may not be filed or recorded until submitted to and approved by the governing board or appropriate body and approval is entered on the plat.
“A local government may by ordinance regulate the subdivision of land within its planning and development regulation jurisdiction.”
Chapter 160D - Local Planning and Development Regulation ↗Re-checked Sep 12, 2026
Building in a floodplainRequired
Development activities in Special Flood Hazard Areas statewide, including new buildings, additions, improvements, renovations, repairs, manufactured homes, subdivisions, temporary or accessory structures, agricultural buildings, roads, bridges, culverts, fill, grading, excavation, mining, dredging, stream-channel alterations, and drilling.
- The cited guidance states that the local community’s floodplain development permitting process applies.
- Local communities may have additional situations requiring a Floodplain Development Permit.
- The permit review addresses whether the site is in a mapped FEMA floodplain or floodway, whether other state and federal permits have been obtained, flood safety, site-plan information, substantial improvements, additions, elevation of buildings and utilities, manufactured-home elevation and anchoring, foundations, and possible Elevation Certificate requirements.
“The following development activities require a Floodplain Development Permit. The Code of Federal Regulations defines “development” as any man-made change to improved or unimproved real estate, including but not limited to dredging, filling, grading, paving, excavation, or drilling operations or storage of equipment or materials. Keep in mind that your local community may have additional situations that stipulate the need for a Floodplain Development Permit.”
North Carolina Quick Guide: Applying for a Floodplain Development Permit ↗Re-checked Sep 12, 2026
Campground & park staysLimited
Camping and habitation within the boundaries of North Carolina Coastal Reserve components.
- Camping and habitation are prohibited on Reserve uplands and wetlands except on the uplands at Masonboro Island Reserve.
- Masonboro Island camping is limited to no more than two consecutive nights.
- The rule applies to the Reserve components identified in 15A NCAC 07O .0105.
maximum camping duration at Masonboro Island Reserve: <= 2 consecutive nights (Applies only on the uplands at Masonboro Island Reserve.)
“Camping or any form of habitation on the uplands or wetlands of the Reserve is prohibited except on the uplands at the Masonboro Island Reserve, where camping is allowed for no more than two consecutive nights.”
Subchapter 7O - North Carolina Coastal Reserve Rules ↗Re-checked Sep 12, 2026
county zoning authorityGeneral
North Carolina counties adopting zoning or subdivision regulations in their county planning and development regulation jurisdiction, including unincorporated areas not subject to municipal planning and development regulation jurisdiction.
- County powers under Chapter 160D may be exercised throughout the county except in areas subject to municipal planning and development regulation jurisdiction.
- A county may apply zoning or subdivision regulations to all or part of its county planning and development regulation jurisdiction.
- The local government's planning and development regulation jurisdiction does not include an area ceded pursuant to an agreement under G.S. 160D-203.
“(b) Counties. - All of the powers granted by this Chapter may be exercised by any county throughout the county except in areas subject to municipal planning and development regulation jurisdiction. (c) Partial Jurisdiction Regulation in Cities and Counties. - If a city elects to adopt zoning or subdivision regulations, each must be applied to the city's entire planning and development regulation jurisdiction. If a county elects to adopt zoning or subdivision regulations, each may be applied to all or part of the county's planning and development regulation jurisdiction.”
G.S. 160D-201, Planning and development regulation jurisdiction ↗Re-checked Sep 21, 2026
county building authorityLimited
County building-permit requirements and local building-related codes for residential construction in North Carolina, including unincorporated areas.
- The North Carolina State Building Code applies throughout the State from the time of adoption.
- Any political subdivision, including a county, may adopt a fire prevention code and floodplain management regulations within its jurisdiction.
- Local fire-prevention-code provisions may not apply to dwellings subject to the North Carolina Residential Code unless they are prescriptively required by that Code.
- County jurisdiction for the State Building Code includes all other areas of the county after municipal corporate limits and qualifying extraterritorial jurisdiction are excluded.
- Local codes or regulations, other than floodplain management regulations and regulations permitted by G.S. 160D-1128, require official approval by the responsible Code Council before becoming effective.
- Construction, reconstruction, alteration, repair, movement, removal, or demolition of a building or structure generally requires permits before work begins, subject to the statutory exceptions in G.S. 160D-1110(c) and G.S. 160D-1110.1(h).
“(e) Effect upon Local Codes. - Except as otherwise provided in this section, the North Carolina State Building Code shall apply throughout the State, from the time of its adoption. Approved rules shall become effective in accordance with G.S. 150B-21.3. However, any political subdivision of the State may adopt a fire prevention code and floodplain management regulations within its jurisdiction. Provided a political subdivision shall not adopt local fire prevention code provisions which apply to dwellings subject to the North Carolina Residential Code which are not prescriptively required by the North Carolina Residential Code. The territorial jurisdiction of any municipality or county for this purpose, unless otherwise specified by the General Assembly, shall be as follows: Municipal jurisdiction shall include all areas within the corporate limits of the municipality and extraterritorial jurisdiction areas established as provided in G.S. 160D-202 or a local act; county jurisdiction shall include all other areas of the county.”
G.S. 143-138, North Carolina State Building Code ↗Re-checked Sep 21, 2026

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

Building code adopted — Building-code adoption and enforcement in Union County.
Local zoning — Countywide aggregate of county and municipal zoning jurisdictions.
Minimum dwelling size — Minimum dwelling size requirements in Union County zoning districts.
Minimum lot size — Minimum lot sizes in Union County zoning districts.
Setbacks — Setbacks in Union County zoning districts.

7 more unanswered

Lot coverage
Building height
Living in an RV
Camping on your land
Well permit
Driveway access
Short-term rentals

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Union County, North Carolina

Is Union County a good place to live off-grid or homestead?

Union County scores 50/100 on the Bolthole Index, a solid county profile. Its strengths: workable self-sufficiency basics: 43.6″/yr rainfall and 48.8% wooded land and mixed durability signals. Watch-outs: about 204,294 people within a 30-minute drive and a weaker property-autonomy legal backdrop.

Do you need a building permit in Union County, North Carolina?

Union County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Union County Environmental Health, On-Site Water Protection Program. Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Union County, North Carolina?

Land in Union County runs about $6,148 per acre, based on the latest county data.

What is the water situation in Union County?

Union County gets about 43.6" of rain a year, with severe drought in roughly 2.2% of years.

How remote is Union County?

A representative private-land location has about 204,294 people within a 30-minute drive and 6,481,056 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

Building permits, zoning and septic rules in Union County, North Carolina

At a glance

Who to call

Do you need a building permit in Union County, North Carolina?

Who is the Union County building department, and how do you reach them?

Does Union County have zoning?

How do septic permits work in Union County?

Can you live in an RV, tiny home or manufactured home on your land in Union County?

Building a home in Union County: the steps, in order

What should you check before you buy land in Union County?

Watch-outs

Sources

Union County in North Carolina

How Union County scores

Find land. Bring the promising ones back.

Parcel due diligence

Answers from the rulebook for Union County

Union County rules

North Carolina rules that apply here

Still unanswered

Living off-grid in Union County, North Carolina

Is Union County a good place to live off-grid or homestead?

Do you need a building permit in Union County, North Carolina?

How much does land cost in Union County, North Carolina?

What is the water situation in Union County?

How remote is Union County?

How Union compares in North Carolina