Bolthole Index

Trousdale County, Tennessee

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

68Index Score / 100
#60 of 95 in Tennessee

Trousdale County, Tennessee requires building permits and applies county zoning to construction, land use, and development12. The Trousdale County Planning, Codes, and Zoning Department handles permits and inspections, with applications available through its online portal3. Septic permits are issued by the Tennessee Department of Environment and Conservation through its Cookeville Environmental Field Office, not by the county45.

At a glance

Building permit
Required; apply through the county's online building-permit portal13
Building code
The county adopted the 2018 residential and commercial building codes, excluding residential sprinklers6
Zoning
Yes; the applicable rules vary by zoning district and jurisdiction27
Septic permits
Required for installation or repair and handled by TDEC's Cookeville field office85
Owner-builder
Allowed for an owner's personal residence, limited to one permit every two years9
RV or tiny home
Rules not confirmed; ask County Planning before buying or moving a unit onto land3
Septic soil difficulty
Only about 7.2% of mapped soils lack severe limits for a conventional drain field10

Who to call

Building permits

Trousdale County Planning, Codes, and Zoning Department

Building permits, construction inspections, zoning administration, land-use questions, subdivision development and code-violation reporting in Trousdale County

(615) 374-1125

328 Broadway, Room 1 Hartsville, TN 37074

Online permits →

Septic permits

TDEC Cookeville Environmental Field Office

Division of Water Resources and septic-related services for Trousdale County

(931) 520-6688

[email protected]

1844 Foreman Dr, Suite 101 Cookeville, TN 38501

Online permits →

Contact details are copied from each office’s official page and were checked against it on September 27, 2026.

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

Yes. Trousdale County, Tennessee requires a building permit, and the county Planning, Codes, and Zoning Department issues permits and inspects construction13. The county adopted the 2018 commercial and residential building codes, with residential sprinklers excluded from the adoption6. Tennessee's state residential permit program applies only in some jurisdictions and does not replace local zoning, septic, electrical, grading, or floodplain approvals11. Because Trousdale County enforces locally adopted codes, start with the county department rather than assuming the State Fire Marshal's residential permit process is the right one13. The available county material does not confirm every permit exemption, inspection stage, or certificate-of-occupancy rule, so ask the department how the adopted codes apply to the exact structure and parcel before work begins3.

Who is the Trousdale County building department, and how do you reach it?

The Trousdale County Planning, Codes, and Zoning Department is the county office for building permits, inspections, zoning administration, new construction, renovations, and subdivision-development questions3. The office is at 328 Broadway, Room 1, Hartsville, TN 37074, and its phone number is (615) 374-11253. Building-permit applications are available through the county's iWorQ portal linked from the department page3. The department asks visitors to make appointments 24 hours in advance3. The official page's email addresses are obscured in its public text, so call the office rather than relying on an unverified address3. Permit fees and detailed inspection stages are not confirmed in the available county material; ask the department for the current fee schedule, required plans, inspections, and certificate-of-occupancy process for your project3.

Does Trousdale County have zoning?

Yes. Trousdale County applies zoning regulations, and construction, land use, and development must comply with county regulations, zoning ordinances, and applicable building codes2. The county separately publishes a Hartsville Zoning Ordinance and a Trousdale County Zoning Resolution, so parcel-level requirements vary by zoning district and jurisdiction7. The Regional Planning Commission establishes zoning regulations, makes rezoning recommendations, adopts a regional development plan, and reviews subdivision plats12. Ask County Planning to identify the controlling ordinance, zoning district, setbacks, allowed uses, and any subdivision restrictions for a parcel before closing3. Tennessee provides a conditional county-zoning exemption for a structure on land devoted to agriculture when the structure is incidental to the agricultural enterprise, but the exemption has location-based exceptions and does not automatically apply within a municipality13.

How do septic permits work in Trousdale County?

Tennessee's Department of Environment and Conservation handles Trousdale County septic permits through the Cookeville Environmental Field Office4145. A Septic System Construction Permit is required before installing a subsurface sewage disposal system or repairing a faulty one15. After installation, the installer must notify the Division of Water Resources so the system can be inspected and approved16. The new conventional-system permit fee is $400 for design flow up to 1,000 gallons per day, while the new alternative-system permit fee is $500 for the same flow range; higher flows add fees, and repairs have no permit fee15. Only about 7.2% of Trousdale County's mapped soils lack severe limits for a conventional drain field, so arrange the site and soils evaluation before fixing the house location10. Call the field office at (931) 520-6688 or use its online service-request portal5.

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

We could not confirm a Trousdale County rule that generally allows or prohibits living in an RV or tiny home on private land. Trousdale County has zoning, and parcel-level rules vary by zoning district and between the Hartsville ordinance and the Trousdale County zoning resolution27. Ask the Planning, Codes, and Zoning Department whether the proposed use is allowed in the parcel's district and what building, setback, utility, and occupancy approvals apply3. The same caution applies to temporary camping, manufactured homes, accessory dwellings, and minimum dwelling size because no general countywide answer for those topics is confirmed. Any new or repaired subsurface sewage system still requires a TDEC construction permit and later inspection816. If public sewer is available on an abutting public way, a qualifying utility may have authority to require a building to connect instead of using another sewage-disposal method17.

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

  1. Ask County Planning to identify the parcel's governing zoning ordinance, district, allowed residential use, setbacks, and subdivision restrictions73.
  2. If the site lacks public sewer, contact TDEC's Cookeville field office for a septic site evaluation and construction permit before finalizing the house location155.
  3. Prepare the plans required under the county's adopted 2018 residential code and apply through the county building-permit portal63.
  4. If you will build your own personal residence, confirm the Tennessee owner-builder conditions: one permit every two years, no sale, lease, or rental, and licensed-prime requirements for certain hired work9.
  5. Schedule county inspections with Planning, Codes, and Zoning, and arrange the required TDEC septic inspection after installation316.
  6. If the driveway enters a state highway right-of-way, obtain the TDOT entrance permit before construction or a change in use18.

What should you check before buying land in Trousdale County?

Start with wastewater and terrain: only about 7.2% of mapped soils lack severe limits for a conventional septic drain field, while about 67.3% of county land is at a slope of 15% or less1019. Confirm a usable septic area and reserve area before treating a parcel as buildable15. About 47% of Trousdale County is wooded, so include clearing and access in the site budget20. A driveway entering a state highway needs a TDOT permit, but the county-road driveway process is not confirmed here; ask County Planning which local office handles the road frontage183. Private-well and floodplain-development requirements also remain unconfirmed, so ask County Planning to direct those questions to the responsible office3. For carrying costs, the effective property-tax rate is about 0.4%, the median annual property-tax bill is about $1,200, and typical annual home insurance is about $1,733212223.

Watch-outs

  • Trousdale County's zoning rules vary by district and jurisdiction; have County Planning identify the ordinance and district for the exact parcel before relying on a permitted-use assumption73.
  • Only about 7.2% of mapped soils lack severe limits for a conventional septic drain field, so obtain the TDEC site evaluation before settling on a house location1015.
  • RV living, tiny-home occupancy, temporary camping, private-well requirements, minimum dwelling size, and the county-road driveway process remain unconfirmed; ask County Planning to identify the applicable rule or responsible office3.

Sources

  1. Trousdale County TN Building, Codes, Zoning and Planning (2026 county census)
  2. Building, Codes, Zoning and Planning, quoted and re-checked
  3. Trousdale County Planning, Codes, and Zoning Department (trousdalecountytn.gov)
  4. TDEC - Subsurface Sewage Disposal Systems (SSDS) (2026 county census)
  5. TDEC Cookeville Environmental Field Office (tn.gov)
  6. Resolutions & Ordinances, quoted and re-checked
  7. Municipal Code, quoted and re-checked
  8. Subsurface Sewage Disposal System (SSDS) Permits, quoted and re-checked
  9. Can I build my own home without a license? (Tennessee statewide rule), quoted and re-checked
  10. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  11. Residential Permit FAQs (Tennessee statewide rule), quoted and re-checked
  12. Planning Commission, quoted and re-checked
  13. Exemption from County Zoning Regulation for Buildings on Land Used for Agriculture, Opinion No. 22-07 (Tennessee statewide rule), quoted and re-checked
  14. Subsurface Sewage Disposal System (SSDS) Permits, quoted and re-checked
  15. Septic System Construction Permit (Tennessee statewide rule), quoted and re-checked
  16. Septic System Related Permits, quoted and re-checked
  17. Utility Customers Frequently Asked Questions (Tennessee statewide rule), quoted and re-checked
  18. Highway Entrance Permits (Tennessee statewide rule), quoted and re-checked
  19. Share of land at 15% slope or less: Bolthole Index county data
  20. Wooded share of land: Bolthole Index county data
  21. Effective property tax rate: Bolthole Index county data
  22. Median property tax bill: Bolthole Index county data
  23. Typical home insurance premium: Bolthole Index county data

Written September 27, 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

Trousdale County in Tennessee

68
County map
Trousdale County highlighted among the Tennessee counties · colored by Index score

How Trousdale County scores

Seclusion38100% ev.
Self-Sufficiency69100% ev.
Admin Boringness46100% ev.
Durability74100% ev.
Property Autonomy71100% ev.
Carry Cost7696% 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 →

$362kTypical home
0.4%Property tax
$5,827Land / acre
53.5"Annual rain
1.8% of yrsSevere drought
10.5 / yr (+9.5)Mid-century 100°F days
13.9 daysMid-century dry spell
2.26" (+7.5%)Mid-century 1-day rain
1.59×Wildfire change factor
100%Forward climate coverage
$1,733Home insurance / yr
0.3% / yrInsurance growth
2.4%Nonrenewal rate
single ZIP shrunk to state medianInsurance basis
42,285People within 30 min
3,218,426People within 2 hr
67,555Radius comparison (15 mi)
107.3People / sq mi
2.7%Federal land
67.3%Land at 15% slope or less
7.2%Septic soil without severe limits
5,062 acWorkable land screen
47%Wooded land
49.1 tonsBiomass / forest ac
58.7°FAvg temp

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Answers from the rulebook for Trousdale County

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

Trousdale County rules

  • Building code adoptedAdopted

    County commercial and residential building-code adoption shown in the county ordinance index.

    • The county index lists separate commercial and residential adoption ordinances.
    • The residential listing states that sprinklers are excluded.

    code edition: 2018 (Residential listing excludes sprinklers)

    “ORD 205 2020 20 Adopt 2018 Building Codes ORD 206 2020 21 Adopt 2018 Residential Building Codes (exclude sprinkler)”
  • County-wide zoningPresent

    County zoning regulations in Trousdale County.

    • The county planning department states that construction, land use, and development activities must comply with county regulations and zoning ordinances.
    “The department works closely with residents, businesses, developers, and local officials to ensure construction, land use, and development activities comply with county regulations, zoning ordinances, and applicable building codes.”
  • Local zoningVaries (with conditions)

    Aggregate of zoning administered through the Trousdale County zoning resolution and the Town of Hartsville zoning ordinance; parcel-level rules vary by zoning district and incorporated-area jurisdiction.

    • The county website separately identifies the Hartsville Zoning Ordinance and Trousdale County Zoning Resolution.
    • The Regional Planning Commission establishes zoning regulations and reviews rezoning and subdivision matters.
    “Hartsville Zoning Ordinance Hartsville-Trousdale Co. Subdivision Regulations Trousdale County Zoning Resolution Trousdale Zoning Map”
  • Subdividing landRegulated (with conditions)

    Subdivision and plat review in Trousdale County.

    • The Regional Planning Commission reviews plat designs submitted for property development.
    • The official planning packet documents minor subdivision, final plat, plat amendment, and rezoning procedures.
    “The Hartsville/Trousdale County Regional Planning Commission is charged with establishing the zoning regulations, making recommendations to the County Commission concerning rezoning of property, adopting a regional development plan, reviewing plat designs submitted for the development of property and other duties set out under Tennessee Code Annotated Title 13, Chapter 3, Part 1 (T.C.A. § 13-3-101 et seq.).”

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

    Subsurface sewage disposal systems serving property in Trousdale County.

    • TDEC identifies Trousdale County as served by the Cookeville Environmental Field Office for Division of Water Resources matters.
    “Trousdale (Division of Water Resources Only)”
  • 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 — Installation of a subsurface sewage disposal system or repair of an existing faulty system in Trousdale County.
      “Permitting for: Installation of subsurface sewage disposal (septic) system on your property Repair to an existing faulty system”
  • Septic inspectionRequired

    Installed subsurface sewage disposal systems in Trousdale County.

    • The installer must notify the Division after installation so the system can be inspected and approved.
    • The Division may inspect each SSDS installation for compliance with permit conditions and regulatory requirements.
    “must notify the Division when a system has been installed so that it can be inspected and approved”
  • 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”
  • 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”
  • 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”
  • 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 Trousdale County.
  • Minimum dwelling size — Minimum dwelling size requirements in Trousdale County.
  • Lot coverage — Lot coverage standards in Trousdale County zoning districts.
  • Building height — Building-height standards in Trousdale County zoning districts.
  • Living in an RV — RV occupancy on private property in Trousdale County.
7 more unanswered
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Off-grid sanitation
  • Well permit
  • 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 Trousdale County, Tennessee

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

Trousdale County scores 68/100 on the Bolthole Index, a strong county profile. Its strengths: manageable long-term carry cost and mixed durability signals. Watch-outs: about 42,285 people within a 30-minute drive.

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

Trousdale County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Tennessee Dept of Environment and Conservation (TDEC) - Division of Water Resources. 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 Trousdale County, Tennessee?

Land in Trousdale County runs about $5,827 per acre, based on the latest county data.

What is the water situation in Trousdale County?

Trousdale County gets about 53.5" of rain a year, with severe drought in roughly 1.8% of years.

How remote is Trousdale County?

A representative private-land location has about 42,285 people within a 30-minute drive and 3,218,426 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 Trousdale County means bringing your own water and power. The kit we’d start with:

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How Trousdale compares in Tennessee

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