Bolthole Index

Hardin County, Tennessee

Building permits, zoning and septic rules in Hardin County, Tennessee

83Index Score / 100
#9 of 95 in Tennessee

Unincorporated Hardin County, Tennessee does not require a residential building permit because the county opted out of the state residential code program1. County zoning is reported as absent in unincorporated areas, although no county ordinance expressly confirming that result was located2. TDEC requires the septic permit and handles Hardin County through its Jackson Environmental Field Office34.

At a glance

Building permit
Not required in unincorporated Hardin County; the county opted out of the state residential building code program1
Zoning
Reported as no county zoning in unincorporated areas; verify the parcel with county government2
Septic permit
Issued by the state (TDEC), not the county, through the Jackson Environmental Field Office5
Owner-builder
You may build one home for your own use every two years without a contractor's license6
Voluntary state inspection
Available by request through the State Fire Marshal in opt-out jurisdictions7
Driveway on a state highway
A TDOT entrance permit is required before work in state-highway right-of-way8
Farm buildings
A conditional state exemption applies where county zoning otherwise governs agricultural structures9
New septic permit fee
$400 for a conventional system up to 1,000 gallons a day, plus $100 for each additional 1,000 gallons a day10

Who to call

Septic permits

TDEC Jackson Environmental Field Office

Septic System Construction Permits and site evaluations for Hardin County, part of the West Tennessee region this field office covers

(731) 512-1300

1625 Hollywood Drive, Jackson, TN 38305

Also useful

Tennessee State Fire Marshal's Office — Hardin County opt-out voluntary inspection

Voluntary state residential building inspections and Certificate of Occupancy for Hardin County, which is listed as an opt-out jurisdiction with no mandatory state permit

731-607-6395

[email protected]

Also useful

Hardin County Government — Departments Directory

General Hardin County government contact; the county's own list of departments has no building, codes, planning or zoning office

(731) 925-9078

465 Main Street, Savannah, TN 38372

Contact details are copied from each office’s official page and were checked against it on September 28, 2026.

Do you need a building permit in Hardin County, Tennessee?

Unincorporated Hardin County does not require a residential building permit because Hardin County opted out of Tennessee's State Residential Building Code Enforcement Program1. The opt-out applies to the statewide standards for one- and two-family dwellings; municipal requirements can differ inside Savannah, Adamsville, Crump, Milledgeville and Saltillo1112. A property owner may still request a state inspection in an opt-out jurisdiction, and the State Fire Marshal can release a Certificate of Occupancy when the dwelling meets statewide construction safety standards7. Tennessee's owner-builder licensing exemption covers a single residence for the owner's personal use, allows one owner permit every two years, and does not cover a home intended for sale, lease or rent6.

Who handles building and land approvals in Hardin County?

Hardin County has no mandatory state residential permit office because its unincorporated area is listed as opt out112. For parcel-specific local questions, call Hardin County Government at (731) 925-9078 or visit 465 Main Street, Savannah, TN 3837213. For an optional state construction inspection, the state list gives the Hardin County opt-out contact as 731-607-6395 and [email protected]12. For septic work, contact TDEC's Jackson Environmental Field Office at (731) 512-1300 or 1625 Hollywood Drive, Jackson, TN 38305; the office serves Hardin County and lists a separate septic-inquiries line4. A driveway built or changed within state-highway right-of-way needs a TDOT entrance permit14.

Does Hardin County have zoning?

Hardin County is reported as having no county zoning in its unincorporated area, but we could not confirm that conclusion in an express county ordinance or no-zoning statement2. Ask Hardin County Government to verify the current status for the parcel before relying on the absence of county zoning13. Tennessee law authorizes counties to zone land outside municipal corporations, so a town's rules and any future county action are separate questions15. Tennessee also limits county zoning power over structures on agricultural land when the structure is incidental to the agricultural enterprise, but the exemption has exceptions involving highways, airports, parks and floodplains and does not govern municipalities9. Minimum home size, setbacks, lot coverage, building height and subdivision controls remain unconfirmed for unincorporated Hardin County; ask county government about each before closing13.

How do septic permits work in Hardin County?

TDEC, not Hardin County, requires a Septic System Construction Permit for construction, modification or repair and handles local inquiries through its Jackson Environmental Field Office534. TDEC may request a detailed site plan or a soils map, and processing can take up to 45 days after a complete application is received16. A new conventional-system permit costs $400 through 1,000 gallons per day of design flow, with $100 for each additional 1,000 gallons per day; alternative-system fees start at $500 through 1,000 gallons per day17. Only 17.3% of Hardin County soils are rated without severe limits for a conventional drain field, so make the site evaluation an early contingency18. The installer must arrange the final inspection before covering the system, and approval leads to a Certificate of Completion19.

Can you live in an RV or tiny home on your land in Hardin County?

We could not confirm a Hardin County rule that authorizes or prohibits long-term RV living, temporary camping, tiny-home occupancy, manufactured homes or accessory dwellings on unincorporated land. The absence of a mandatory residential building permit does not answer occupancy, sanitation, floodplain or utility questions13. Hardin County is reported as unzoned outside municipalities, but no express county no-zoning statement was located2. Ask Hardin County Government about the proposed use and parcel location before buying or moving a unit onsite13. Any septic construction, modification or repair still needs a TDEC permit, and the installed system must receive a final inspection before it is covered319. A site-built tiny home can use the voluntary state inspection route available in opt-out jurisdictions7.

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

  1. Confirm that the parcel is outside a municipality and ask Hardin County Government about zoning, setbacks, subdivision, floodplain and county-road access requirements213.
  2. Decide whether to request the voluntary state inspection and possible Certificate of Occupancy offered in opt-out jurisdictions7.
  3. Apply to TDEC for the septic permit early because a complete application can take up to 45 days to process and may require a site plan or soils map16.
  4. Obtain a TDOT entrance permit before constructing or changing a driveway in state-highway right-of-way14.
  5. Confirm contractor licensing: the owner-builder exemption is limited to a personal residence and one owner permit every two years, while anyone paid more than $25,000 is treated as a licensed prime contractor6.
  6. Have the septic installer schedule the final inspection before covering the system19.

What to check before you buy land in Hardin County

Hardin County has 71.6% of its land at a slope of 15% or less and a 69.3% wooded share, but parcel-level terrain and clearing needs still require an onsite look2021. Only 17.3% of county soils rate without severe limits for a conventional drain field, so make satisfactory TDEC septic approval a purchase contingency183. The nearest city of 100,000 or more is about 91 miles from the county center, which can affect supply and service trips22. The typical effective property-tax rate is 0.4%, and the median annual property-tax bill is $6662324. Farmland value averages $3,021 per acre, while the typical home value is $215,880 and the typical annual home-insurance premium is $1,652252627. Confirm floodplain status, legal access, private-well requirements and any utility connection obligation before closing; those parcel-specific rules remain unconfirmed here.

Watch-outs

  • Hardin County's building-permit census says no residential permit is required in the unincorporated opt-out area, but county zoning is only reported as absent and lacks an express county no-zoning statement; verify the parcel with Hardin County Government1213.
  • Only 17.3% of Hardin County's soils are free of severe limitations for a conventional septic drain field, so don't assume a standard system will pass without a TDEC site evaluation18.
  • If you buy land inside Savannah or another Hardin County town rather than the unincorporated county, zoning and permit rules there can differ from everything in this guide2.

Sources

  1. Tennessee State Fire Marshal - Residential Jurisdictions & Inspectors list (2026 county census)
  2. Hardin County Government - Departments (2026 county census)
  3. Septic System Construction Permit, quoted and re-checked
  4. TDEC Jackson Environmental Field Office (tn.gov)
  5. TDEC - Subsurface Sewage Disposal Systems (SSDS) (2026 county census)
  6. Can I build my own home without a license? (Tennessee statewide rule), quoted and re-checked
  7. Statewide Building Construction Code Inspections in “Opt-Out” or “Non-Code” Jurisdictions (Tennessee statewide rule), quoted and re-checked
  8. Highway Entrance Permits (Tennessee statewide rule), quoted and re-checked
  9. Exemption from County Zoning Regulation for Buildings on Land Used for Agriculture, Opinion No. 22-07 (Tennessee statewide rule), quoted and re-checked
  10. Septic System Construction Permit (Tennessee statewide rule), quoted and re-checked
  11. Residential Permit FAQs (Tennessee statewide rule), quoted and re-checked
  12. Tennessee State Fire Marshal's Office — Hardin County opt-out voluntary inspection (tn.gov)
  13. Hardin County Government — Departments Directory (hardincogov.com)
  14. Highway Entrance Permits, quoted and re-checked
  15. Tennessee Attorney General Opinion No. 10-108 (Tennessee statewide rule), quoted and re-checked
  16. Subsurface Sewage Disposal System Frequently Asked Questions, quoted and re-checked
  17. Septic System Construction Permit, quoted and re-checked
  18. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  19. Subsurface Sewage Disposal System Frequently Asked Questions, quoted and re-checked
  20. Share of land at 15% slope or less: Bolthole Index county data
  21. Wooded share of land: Bolthole Index county data
  22. Distance to the nearest metro area: Bolthole Index county data
  23. Effective property tax rate: Bolthole Index county data
  24. Median property tax bill: Bolthole Index county data
  25. Farmland value per acre (USDA census): Bolthole Index county data
  26. Typical home value (Zillow): Bolthole Index county data
  27. Typical home insurance premium: Bolthole Index county data

Written September 28, 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.

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County locator

Hardin County in Tennessee

83
County map
Hardin County highlighted among the Tennessee counties · colored by Index score

How Hardin County scores

Seclusion60100% ev.
Self-Sufficiency73100% ev.
Admin Boringness87100% ev.
Durability52100% ev.
Property Autonomy71100% ev.
Carry Cost89100% 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 →

$216kTypical home
0.4%Property tax
$3,021Land / acre
56.2"Annual rain
4.8% of yrsSevere drought
16.4 / yr (+14.6)Mid-century 100°F days
15.1 daysMid-century dry spell
2.41" (+6.2%)Mid-century 1-day rain
1.53×Wildfire change factor
100%Forward climate coverage
$1,652Home insurance / yr
0.5% / yrInsurance growth
0.9%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
23,984People within 30 min
1,749,631People within 2 hr
31,078Radius comparison (15 mi)
47.2People / sq mi
2.2%Federal land
71.6%Land at 15% slope or less
17.3%Septic soil without severe limits
60,479 acWorkable land screen
69.3%Wooded land
48.4 tonsBiomass / forest ac
60.1°FAvg temp

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Answers from the rulebook for Hardin County

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

Hardin County rules

  • County-wide zoningAbsent

    Hardin County government lists no county planning or zoning department; zoning in the county exists only within municipalities such as Savannah, so unincorporated land is generally unzoned.

    Hardin County Government - Departments ↗Scouted from the county site, not yet independently re-checked

Tennessee rules that apply here

  • Building permitLimited

    State residential building permits for one- and two-family dwellings and townhouses in Tennessee jurisdictions where the State Fire Marshal's Office administers the residential building permit program.

    • The state permit is required only in some areas because other jurisdictions may enforce local residential building codes.
    • A county legislative body may remove unincorporated areas from the state program or a city legislative body may remove the city by a two-thirds vote.
    • The state permit does not replace grading or fill approval, floodplain compliance, septic or sewer permits, electrical permits, or zoning approval.
    • Local governments remain responsible for locally adopted codes and other requirements.
    “Why is the state residential building permit only required in some areas of the state?”
  • Owner-builder exemptionConditional

    A Tennessee property owner constructing a single residence for the owner's individual use.

    • The owner may have one permit every two years.
    • The residence must not be for sale, lease, or rent.
    • If the owner hires a contractor, the contractor is a prime and must be licensed and obtain the building permit for inspections.
    • Contracts may not be split into phases to circumvent the licensing law.
    • Anyone paid more than $25,000 by the owner is considered a prime and must be licensed.
    • The exemption is based on TCA 62-6-103 and Rule 0680-1-.22.

    owner permits: per 1 permit per two years · contractor payment threshold: > 25000 USD (Anyone paid in excess of this amount is considered a prime and must be licensed.)

    “one permit every two years to build their home as long as it is not for sale, lease, or rent (individual use).”
  • Certificate of occupancyLimited

    Certificates of occupancy for one- and two-family dwellings in Tennessee opt-out or non-code jurisdictions when the State Fire Marshal's Office inspects the dwelling during construction.

    • The owner or contractor may obtain a state building permit to request the inspection.
    • The Certificate of Occupancy is released only if the dwelling is determined to meet statewide building construction safety standards.
    • The source describes this process for opt-out or non-code jurisdictions and for new construction or additions to existing homes.
    “determined to meet the statewide building construction safety standards, the State Fire Marshal’s Office will release a Certificate of Occupancy”
  • Who permits septicState (with conditions)

    Subsurface sewage disposal systems in Tennessee, including Hardin County.

    • The permit obligation applies to installation or repair of a faulty existing septic system.
    “The Division inspects each SSDS installation to ensure that it was installed in accordance with permit conditions and regulatory requirements.”
  • Septic permitRequired

    Installation of a subsurface sewage disposal system on property in Tennessee, and repair of an existing faulty system.

    • A Septic System Construction Permit is required before installation or repair.
    • The application requires site and system information; soils maps may be required and large conventional or alternative systems require a licensed-engineer design.
    • The review generally takes 10 days and must be completed within 45 days.
    • New conventional permit fee is $400 up to 1,000 gallons per day, plus $100 for each additional 1,000 gallons per day.
    • New alternative permit fee is $500 up to 1,000 gallons per day, plus $150 for each additional 1,000 gallons per day.
    • Experimental SSDS permit fee is $500.
    • Repair permits have no permit fee; repair construction inspection fee is $100.
    • Contract counties Blount, Davidson, Hamilton, Jefferson, Knox, Madison, Sevier, Shelby, and Williamson may require an additional permit.

    new conventional SSDS permit fee: 400 USD up to 1000 gallons per day design flow ($100 for each additional 1000 gpd flow) · new alternative SSDS permit fee: 500 USD up to 1000 gallons per day design flow ($150 for each additional 1000 gpd flow) · experimental SSDS permit fee: 500 USD · repair permit fee: No permit fee

    “Any individual or property owner who desires to have a subsurface sewage disposal (septic) system installed on their property or requiring repair to an existing faulty system must get a Septic System Construction Permit.”
    One more reviewed finding on this topic
    • Required — Construction, modification, or repair of septic systems in Tennessee, including Hardin County.
      “A septic system permit is required for the construction, modification or repair of a septic system.”
  • Septic inspectionRequired

    Installed septic systems in Tennessee, including Hardin County.

    • The installer contacts the local Environmental Scientist to schedule the final inspection before the system is covered.
    • If the installation is approved, the Environmental Scientist issues a Certificate of Completion.
    “When installation is complete, the installer will contact the local Environmental Scientist to schedule a final inspection before the system is covered.”
  • Mandatory utility hookupSewer (with conditions)

    Residential, commercial, or industrial buildings on lots or parcels abutting a street or other public way containing a sanitary sewer, where the applicable Tennessee utility system has issued bonds payable for sewer services.

    • The cited Tennessee statute grants qualifying utility systems authority to require connection.
    • The building must exist on the abutting lot or parcel.
    • The owner, tenant, or occupant may be required to cease using other means for disposal of sewage, sewage waste, or other polluting matter.
    • This source describes authority to require sewer connection; it does not establish that every Tennessee property has sewer available.
    “Utility systems within the State of Tennessee that have issued bonds payable for sewer services are granted authority in TCA § 7-35-201 (1) to "require the owner tenant or occupant of each lot or parcel of land that abuts upon a street or other public way containing a sanitary sewer and upon which lot or parcel a building exists for residential, commercial or industrial use, to connect the building with the sanitary sewer and to cease to use any other means for the disposal of sewage, sewage waste or other polluting matter."”
  • Agricultural exemptionConditional

    Buildings or structures on land used for agricultural purposes and subject to county zoning regulation in Tennessee.

    • The building or structure must be located on lands devoted to agricultural uses.
    • The building or structure must be incidental to the agricultural enterprise.
    • The exemption does not apply to agricultural lands adjacent or in proximity to state or federal-aid highways, public airports, or public parks.
    • The exemption does not apply to land located within the one-hundred-year flood plain.
    • The Attorney General opinion states that the provision applies to counties only and has no application to municipalities.
    • There is no blanket exemption for cotton gins, grain elevators, slaughterhouses, processing plants, or milk bottling plants; those structures qualify only when the statutory conditions are met.
    “it must be located on lands “devoted to agricultural uses;” and (2) it must be “incidental to the agricultural enterprise.””
  • Driveway accessLimited

    Construction, modification, revision, or change in use of a driveway on Tennessee state highway right-of-way.

    • The requirement applies to state highway right-of-way and does not establish a permit requirement for every driveway on every road.
    • Property owners must obtain the permit from TDOT.
    • County or municipal land-use regulations may also apply.
    “Under state law, a permit is required before construction of a driveway on state highway right-of-way, including the modification, revision, or change in use”
    One more reviewed finding on this topic
    • Required — Driveways constructed on state-highway right-of-way in Hardin County.
      “Under state law, a permit is required before construction of a driveway on state highway right-of-way”
  • Permit feesPublished (with conditions)

    Residential building permits administered by Tennessee's State Residential Building Code Enforcement Program for one- and two-family dwellings and townhouses where the state program applies.

    • The state program does not apply where a local government enforces local building codes under an exemption or where the city or county has opted out by a two-thirds vote.
    • For construction costs above the maximum listed in the table, an additional fee of $50.00 applies for each additional $50,000 or fraction thereof.
    • The construction cost cannot be less than $60.57 per heated square foot of construction.
    • An HVAC and Plumbing Inspection is required for all new construction.
    • A slab other than Monolith Pour Inspection is required when slab and footing are cast separately.

    permit fee for construction cost $0 to $5,000: 100 USD · permit fee for construction cost $5,001 to $100,000: 350 USD · additional fee for plumbing and HVAC inspection: 100 USD (Applicable as stated in the fee table.) · additional fee for slab other than monolith pour: 100 USD (Applicable when slab and footing are cast separately.)

    “$0 to $5,000 | $100 | $100 | $100 $5,001 to $100,000 | $350 | $100 | $100”
    One more reviewed finding on this topic
    • Published (with conditions) — TDEC septic-system construction permits applicable in Hardin County.
      “New Alternative SSDS Permit | $500 up to 1000 gallons per day design flow”
  • Permit processPublished (with conditions)

    Residential permit purchase and inspection process under Tennessee's State Residential Building Code Enforcement Program.

    • The state program applies to one- and two-family dwellings and townhouses only in areas without the stated local-code exemption or opt-out.
    • A first-time CORE user must register for an account.
    • A building permit must be purchased online or at a local Issue Agent.
    • Inspections cover the foundation before pouring, framing/rough-in construction, and final construction.
    • One free re-inspection is available; each additional re-inspection requires an additional fee.
    • A homeowner may build a home only if it will be the homeowner's residence, not sold or leased, and the homeowner has not received a homeowner building permit during the preceding 24 months.
    • Detached garages, sheds, barns, and other detached structures not used for living purposes do not require a state residential building permit.
    • A permit is not required for installation of a manufactured or modular home, but custom site work such as a deck, patio, or stoop requires a permit.

    effective date for permit requirement for additions over 30 square feet: 2011-10-01 (Applies to additions to existing homes.) · free re-inspections per project: 1 inspection (Available if a required inspection is not passed the first time.)

    “A building permit must be purchased online or at a local Issue Agent. The cost of the building permit is based on the estimated cost”
    One more reviewed finding on this topic
  • county zoning authorityGeneral

    County legislative bodies adopting zoning regulations for portions of Tennessee counties outside municipal corporations.

    • The authority is exercised under the conditions and procedures in Tennessee Code Annotated §§ 13-7-101 through 13-7-119.
    • The grant applies to portions of counties outside municipal corporations.
    • County zoning authority does not authorize county building permits or regulation of buildings or structures on agricultural land when the building or structure is incidental to the agricultural enterprise, except on agricultural lands adjacent or in proximity to state federal-aid highways, public airports or public parks.
    • The agricultural-land limitation applies to counties only and has no application to municipalities.
    “Under Tenn. Code Ann. § 13-7-101, et seq., the General Assembly has expressly delegated the authority to county legislative bodies to enact zoning regulations and create a board of zoning appeals.”

Still unanswered

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

  • Inspections — Building inspections in Hardin County.
  • Local zoning — Local zoning rules within Hardin County, including incorporated areas.
  • Zoning districts — Zoning districts for unincorporated Hardin County.
  • Minimum dwelling size — Minimum dwelling size in unincorporated Hardin County.
  • Minimum lot size — Minimum lot size in unincorporated Hardin County.
13 more unanswered
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Off-grid sanitation
  • Well permit
  • Subdividing land
  • Building in a floodplain
  • 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 Hardin County, Tennessee

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

Hardin County scores 83/100 on the Bolthole Index, a strong county profile. Its strengths: manageable long-term carry cost and low administrative friction for a quiet rural property.

Do you need a building permit in Hardin County, Tennessee?

Hardin County does not require a county building permit for a home in unincorporated areas, and it has no county-wide zoning. Onsite septic is permitted by Tennessee Department of Environment and Conservation (TDEC), Division of Water Resources - Subsurface Sewage Disposal Systems. 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 Hardin County, Tennessee?

Land in Hardin County runs about $3,021 per acre, based on the latest county data.

What is the water situation in Hardin County?

Hardin County gets about 56.2" of rain a year, with severe drought in roughly 4.8% of years.

How remote is Hardin County?

A representative private-land location has about 23,984 people within a 30-minute drive and 1,749,631 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.

Off-grid gear

Going off-grid in Hardin County means bringing your own water and power. The kit we’d start with:

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How Hardin compares in Tennessee

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