Bolthole Index

DeKalb County, Tennessee

Building permits, zoning and land rules in DeKalb County, Tennessee

73Index Score / 100
#43 of 95 in Tennessee

Unincorporated DeKalb County, Tennessee requires building permits before work begins on regulated projects, but it has no county zoning ordinance, and the county's incorporated municipalities follow their own ordinances.123 Unoccupied, unconditioned detached garages, sheds, barns, decks and pole barns are exempt from the building permit; conditioning or occupying one triggers it.4 Septic permits come from the Tennessee Department of Environment and Conservation, not the county, and septic approval is part of the county building-permit submittal.56

At a glance

Building permit
Required before work begins on regulated projects1
County zoning
No county zoning ordinance in unincorporated areas2
Septic authority
Tennessee Department of Environment and Conservation7
Detached outbuildings
No permit when unoccupied and unconditioned8
Owner-builder
Available for a primary residence, with conditions9
Minimum home size
No county zoning minimum in unincorporated areas10
Final occupancy
Certificate required for buildings constructed under a county permit11

Who to call

Building permits

DeKalb County Building Department

Building-permit applications, general permit inquiries, plan requirements and county building inspections

931-256-1524

1 South Public Square, Smithville, TN 37166

Zoning

DeKalb County Planning Information

Planning questions and confirmation of the rules that apply to a DeKalb County parcel

931-979-2170

Septic permits

Tennessee Department of Environment and Conservation

Septic and groundwater questions for DeKalb County; TDEC evaluates sites, issues septic permits and completes final inspections

931-520-6688

Online permits →

Contact details are copied from each office’s official page and were checked against it on October 9, 2026.

Off-grid gear

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

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

Yes. Unincorporated DeKalb County requires building permits to be issued before work begins on projects covered by its building program, and approved plans must remain at the site.1 The county may require footing, framing, rough-in and final inspections, and work cannot be concealed before inspection.12

A detached garage, shed, barn, deck or pole barn does not require a county permit when it is neither occupied nor conditioned; a permit is required if the structure is insulated, heated, cooled or occupied.8 Agricultural buildings used solely for farm purposes may be exempt, but applicable building-code and setback requirements still apply.13 DeKalb County's owner-builder option is limited to a primary residence once every two years, and work valued above $25,000 must be done by a licensed contractor9. DeKalb County adopted Tennessee building codes in 2011, so the absence of county zoning does not mean construction is code-free.14

Who handles DeKalb County building permits and inspections?

The DeKalb County Building Department handles permit applications, general inquiries and the county inspection process at the courthouse in Smithville.15 The published residential permit fee is $0.75 per square foot; building permit fees include required inspections, plan review and up to three re-inspections.16

The published application package includes a site plan, a potable-water source, septic approval or sewer verification, construction plans, proof of ownership, owner and contractor information, and contractor license and insurance when applicable.6 The county requires a well or utility as the potable-water source and septic approval or sewer verification, but those submittals do not establish that every property must connect to public water or sewer.17 Call the Building Department before design work is final if the use or occupancy will change.15

Does DeKalb County, Tennessee have zoning?

Unincorporated DeKalb County has no county zoning ordinance or county zoning districts.1819 That means county zoning supplies no minimum dwelling size, minimum lot size, lot-coverage limit, building-height limit or dimensional setback, although applicable setbacks and non-zoning rules may still constrain a project.1020212223

Do not carry the unincorporated-area answer into a municipality: municipalities in DeKalb County are governed by their own ordinances and must be contacted independently.3 A land division intended for development with septic can require a TDEC subdivision evaluation, including a survey and a soils map prepared by a Tennessee-licensed soils consultant.24

How do septic permits work in DeKalb County?

TDEC, not DeKalb County, handles septic permitting for DeKalb County property.5 A septic construction permit is required to install a septic system or repair an existing faulty system, and the county requires septic approval or sewer verification with a building submittal.25 After installation, the installer must notify the state so the system can be inspected and approved before it is covered.26

Only about 11.5% of county soils avoid a “very limited” rating for a conventional drain field, so make the site evaluation an early pre-purchase task.27 For a septic-dependent land division, TDEC can require a subdivision evaluation, survey and soils map prepared by a Tennessee-licensed soils consultant, though dividing land into tracts that are all 5 acres or larger is not a subdivision for this purpose.24

Can you live in an RV or tiny home in DeKalb County?

Unincorporated DeKalb County has no county zoning restriction on RV occupancy, tiny-home occupancy, manufactured-home occupancy or temporary camping.28 That narrow zoning answer does not waive building, wastewater or utility requirements, and we could not confirm which off-grid sanitation methods qualify; ask Planning Information and TDEC about the proposed setup before buying land.172930

A tiny home has no county zoning minimum dwelling size in unincorporated DeKalb County, but an occupied structure still faces adopted building codes, permit review, septic approval or sewer verification, and final occupancy requirements.1014611 A shed or other detached structure loses its permit exemption when it is occupied or conditioned, so the outbuilding exemption is not a shortcut around residential permitting.8

Building a home in DeKalb County: what are the steps?

  1. Confirm whether the parcel is unincorporated; municipalities apply their own ordinances.3
  2. Ask TDEC for the septic permit if the site will not use public sewer.25
  3. Prepare the county submittal: site plan, water source, septic approval or sewer verification, construction plans, ownership proof and required contractor records.6
  4. Obtain the DeKalb County building permit before work starts and keep approved plans at the job site.1
  5. Schedule each required county inspection before work is concealed.12
  6. Complete every required inspection and obtain the Certificate of Use/Occupancy or Certificate of Completion before occupying the building.11

What should you check before buying land in DeKalb County?

Start with buildability, not the asking price. Confirm legal access and whether a driveway connecting to state highway right-of-way needs a TDOT highway entrance permit; we could not confirm a separate county driveway permit for other roads.31 Ask the county floodplain administrator about mapped flood hazards and local review before development; the county's specific floodplain process could not be confirmed.32

Order septic due diligence early: only about 11.5% of mapped soils avoid severe conventional-drain-field limitations, while about 44.4% of county land has a slope of 15% or less.2733 Confirm whether public sewer is available, because a qualifying Tennessee utility can require connection for a building on an abutting parcel.34 For carrying cost context, the median property-tax bill is about $747 per year and the effective property-tax rate is about 0.4%.3536

Watch-outs

  • Unincorporated DeKalb County has no county zoning ordinance, but adopted building codes and permit requirements still apply to regulated projects.214
  • A septic permit is required for a new system or repair of an existing faulty system.25
  • A DeKalb County owner-builder option is limited to the owner's primary residence, once every two years, and work valued above $25,000 requires a licensed contractor.9
  • Off-grid sanitation, private-well permitting and county-road driveway approval remain unconfirmed; ask Planning Information, TDEC and the Building Department before committing to a parcel.293015

Sources

  1. Building Department, quoted and re-checked
  2. Notice of Zoning, quoted and re-checked
  3. Notice of Zoning Letter, quoted and re-checked
  4. DeKalb County Building Department, quoted and re-checked
  5. tn.gov, quoted and re-checked
  6. Building Department, quoted and re-checked
  7. TDEC - Subsurface Sewage Disposal Systems (SSDS) (2026 county census)
  8. Building Department (2026 county census)
  9. dekalbtennessee.com, quoted and re-checked
  10. Notice of Zoning, quoted and re-checked
  11. DeKalb County Permit Application, quoted and re-checked
  12. Building Department, quoted and re-checked
  13. Building Department, quoted and re-checked
  14. dekalbtennessee.com, quoted and re-checked
  15. DeKalb County Building Department (dekalbtennessee.com)
  16. Building Department, quoted and re-checked
  17. Building Department, quoted and re-checked
  18. Notice of Zoning Letter, quoted and re-checked
  19. Notice of Zoning, quoted and re-checked
  20. Notice of Zoning, quoted and re-checked
  21. Notice of Zoning, quoted and re-checked
  22. Notice of Zoning, quoted and re-checked
  23. Notice of Zoning, quoted and re-checked
  24. Online Application for Septic Related Services, quoted and re-checked
  25. Subsurface Sewage Disposal System (SSDS) Permits, quoted and re-checked
  26. Subsurface Sewage Disposal System (SSDS) Frequently Asked Questions (Tennessee statewide rule), quoted and re-checked
  27. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  28. Tennessee law on county zoning and building authority
  29. DeKalb County Planning Information (dekalbtennessee.com)
  30. Tennessee Department of Environment and Conservation (dekalbtennessee.com)
  31. Highway Entrance Permits (Tennessee statewide rule), quoted and re-checked
  32. Statewide Floodplain Administrator Directory (Tennessee statewide rule), quoted and re-checked
  33. Share of land at 15% slope or less: Bolthole Index county data
  34. comptroller.tn.gov (Tennessee statewide rule), quoted and re-checked
  35. Median property tax bill: Bolthole Index county data
  36. Effective property tax rate: Bolthole Index county data

Written October 9, 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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Compared with neighboring counties

Like 5 of its 6 neighbors, DeKalb County requires a building permit for a home.

RuleDeKalb CountyCannon CountySmith CountyWarren CountyWhite CountyPutnam CountyJackson County
Building permitRequiredRequiredRequiredRequiredRequiredRequiredLimited
County zoningNoYesYesNoNot publishedNoNo
Septic permitsTDECTDECTDECTDECTDECTN TDECTDEC

County locator

DeKalb County in Tennessee

73
County map
DeKalb County highlighted among the Tennessee counties · colored by Index score

How DeKalb County scores

Seclusion43100% ev.
Self-Sufficiency62100% ev.
Admin Boringness64100% ev.
Durability71100% ev.
Property Autonomy71100% ev.
Carry Cost80100% 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 →

$306kTypical home
0.4%Property tax
$4,806Land / acre
56"Annual rain
3.8% of yrsSevere drought
6.6 / yr (+6.2)Mid-century 100°F days
13.7 daysMid-century dry spell
2.35" (+7%)Mid-century 1-day rain
1.58×Wildfire change factor
100%Forward climate coverage
$1,689Home insurance / yr
0.6% / yrInsurance growth
2.05%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
52,243People within 30 min
3,463,880People within 2 hr
44,818Radius comparison (15 mi)
69.7People / sq mi
15.4%Federal land
44.4%Land at 15% slope or less
11.5%Soils rated "not limited" for septic (strict USDA rating)
18,227 acWorkable land screen
60.1%Wooded land
61.2 tonsBiomass / forest ac
58.3°FAvg temp

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Cities and towns in DeKalb County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Town of Alexandria · Town of Dowelltown · Town of Liberty · Smithville

Answers from the rulebook for DeKalb County

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

DeKalb County rules

  • Building permitRequired

    Building projects in unincorporated DeKalb County.

    • Detached garages, sheds, barns, decks, and pole barns that are not occupied or conditioned do not require a permit.
    • If such a structure is insulated, heated, cooled, or occupied, a permit is required.
    • Permits must be issued before work begins.
    • Approved plans must be available on site.
    • Changes from approved plans require review and approval.
    “Detached garages, sheds, barns, decks, and pole barns that are not occupied or conditioned. If insulated, heated, cooled, or occupied, a permit is required.”
    One more reviewed finding on this topic
    • Required — Building work administered by the DeKalb County Building Department.
      “Permits must be issued before work begins.”
  • Owner-builder exemptionConditional

    Homeowner construction of a primary residence.

    • The homeowner may perform work on a primary residence once every two years, subject to verification and applicable law.
    • If total construction value exceeds $25,000, the work must be performed by a licensed contractor.
    • The homeowner affidavit states the residence must be for the owner's individual use and not for sale, lease, or rent.
    • The owner must not have built a single-family dwelling within the prior two years.
    • If the owner-builder stops acting as owner-builder and hires a contractor, the permit becomes null and void.

    construction value threshold: > 25000 USD (licensed contractor required)

    “Homeowner Affidavit: I hereby state that I am the registered owner of the property on which the work is to be performed and that the residential structure is for my own individual use and is not for sale, lease or rent, that I have not built a single-family dwelling within the past two (2) years.”
    One more reviewed finding on this topic
    • Conditional — Homeowner construction on a primary residence in unincorporated DeKalb County.
      “Homeowners may perform work on their primary residence once every two (2) years, subject to verification and applicable law.”
  • Building code adoptedAdopted (with conditions)

    Building codes in DeKalb County.

    • The county page states adoption as of January 2011.
    “As of January 2011, DeKalb County adopted the State of Tennessee Building Codes.”
    One more reviewed finding on this topic
    • Adopted (with conditions) — Building projects subject to DeKalb County building-code administration.
      “As of January 2011, DeKalb County adopted the State of Tennessee Building Codes.”
  • InspectionsLimited

    Building projects in unincorporated DeKalb County.

    • Footing, framing, rough-in, and final inspections may be required.
    • Work must not be concealed prior to inspection.
    • Fees include required inspections and up to three re-inspections.
    “Footing, framing, rough-in, and final inspections may be required. Work must not be concealed prior to inspection.”
    One more reviewed finding on this topic
    • Limited — County-administered building projects.
      “Footing, framing, rough-in, and final inspections may be required. Work must not be concealed prior to inspection.”
  • Certificate of occupancyRequired

    Buildings covered by the DeKalb County permit application.

    • Required inspections must be completed.
    • Occupancy may not occur until a Certificate of Use/Occupancy or Certificate of Completion is issued.
    “to not occupy the building until a Certificate of Use/Occupancy or Certificate of Completion has been issued.”
  • County-wide zoningAbsent

    County zoning regulation in unincorporated DeKalb County.

    • This does not establish rules administered by incorporated municipalities.
    • Septic, building-code, floodplain, subdivision, and other non-zoning rules may still apply.
    “DeKalb County does not have zoning at this time.”
    2 more reviewed findings on this topic
    • Absent — County zoning ordinances in unincorporated DeKalb County.
      “DeKalb County, Tennessee does not have any zoning ordinances in unincorporated areas of the county.”
    • Absent — County zoning in unincorporated DeKalb County.
      “DeKalb County, Tennessee does not have any zoning ordinances in unincorporated areas of the county.”
  • Local zoningVaries (with conditions)

    Aggregate of unincorporated and incorporated areas in DeKalb County.

    • The county has no zoning ordinances in unincorporated areas.
    • Municipalities within DeKalb County are subject to their own ordinances and must be contacted independently.
    “The municipalities within DeKalb County are subject of their own terms on ordinances and must be reached out to independently.”
  • Zoning districtsNot published

    County zoning districts in unincorporated DeKalb County, Tennessee.

    • DeKalb County has no county zoning ordinances or county zoning districts for unincorporated areas.
    • Municipalities within DeKalb County have their own ordinances and must be contacted independently.
    • The county states that it adopted the State of Tennessee Building Codes as of January 2011; building-code requirements are distinct from zoning districts.
    “DeKalb County does not have zoning at this time. As of January 2011, DeKalb County adopted the State of Tennessee Building Codes.”
    2 more reviewed findings on this topic
    • Not published — County zoning districts in unincorporated DeKalb County.
      “DeKalb County, Tennessee does not have any zoning ordinances in unincorporated areas of the county.”
    • Not published — County zoning districts in unincorporated DeKalb County.
      “DeKalb County does not have zoning at this time.”
  • Minimum dwelling sizeNone

    County zoning minimum-dwelling-size rules in unincorporated DeKalb County.

    • No county zoning ordinance supplies a minimum dwelling size.
    • Municipal ordinances may apply inside municipalities.
    “DeKalb County, Tennessee does not have any zoning ordinances in unincorporated areas of the county.”
    One more reviewed finding on this topic
    • None — County zoning minimum dwelling-size standards in unincorporated DeKalb County.
      “DeKalb County does not have zoning at this time.”
  • Minimum lot sizeNone

    County zoning minimum-lot-size rules in unincorporated DeKalb County.

    • No county zoning ordinance supplies a minimum lot size.
    • Municipal ordinances may apply inside municipalities.
    “DeKalb County, Tennessee does not have any zoning ordinances in unincorporated areas of the county.”
    One more reviewed finding on this topic
    • None — County zoning minimum lot-size standards in unincorporated DeKalb County.
      “DeKalb County, Tennessee does not have any zoning ordinances in unincorporated areas of the county.”
  • SetbacksNone

    County zoning setback rules in unincorporated DeKalb County.

    • No county zoning ordinance supplies dimensional setbacks.
    • The county building page states that structures must comply with applicable setback requirements where applicable; this claim concerns county zoning only.
    • Municipal ordinances may apply inside municipalities.
    “Agricultural buildings used solely for farm purposes may be exempt. All structures must still comply with applicable building codes and setback requirements where applicable. DeKalb County does not have countywide zoning regulations.”
    One more reviewed finding on this topic
    • None — County zoning setback standards in unincorporated DeKalb County.
      “Agricultural buildings used solely for farm purposes may be exempt. All structures must still comply with applicable building codes and setback requirements where applicable. DeKalb County does not have countywide zoning regulations.”
  • Lot coverageNone

    County zoning lot-coverage rules in unincorporated DeKalb County.

    • No county zoning ordinance supplies a lot-coverage limit.
    • Municipal ordinances may apply inside municipalities.
    “DeKalb County, Tennessee does not have any zoning ordinances in unincorporated areas of the county.”
    One more reviewed finding on this topic
    • None — County zoning lot-coverage standards in unincorporated DeKalb County.
      “DeKalb County, Tennessee does not have any zoning ordinances in unincorporated areas of the county.”
  • Building heightNone

    County zoning building-height rules in unincorporated DeKalb County.

    • No county zoning ordinance supplies a building-height limit.
    • Municipal ordinances may apply inside municipalities.
    “DeKalb County, Tennessee does not have any zoning ordinances in unincorporated areas of the county.”
    One more reviewed finding on this topic
    • None — County zoning building-height standards in unincorporated DeKalb County.
      “DeKalb County, Tennessee does not have any zoning ordinances in unincorporated areas of the county.”
  • Living in an RV · by state lawUnrestricted

    Unincorporated DeKalb County: no county rule sets this, because DeKalb County's own reviewed answer confirms it has no county-wide zoning ordinance.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • This does not establish rules administered by incorporated municipalities.
    • Septic, building-code, floodplain, subdivision, and other non-zoning rules may still apply.
    “DeKalb County does not have zoning at this time.”
  • Camping on your land · by state lawUnrestricted

    Unincorporated DeKalb County: no county rule sets this, because DeKalb County's own reviewed answer confirms it has no county-wide zoning ordinance.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • This does not establish rules administered by incorporated municipalities.
    • Septic, building-code, floodplain, subdivision, and other non-zoning rules may still apply.
    “DeKalb County does not have zoning at this time.”
  • Tiny homes · by state lawUnrestricted

    Unincorporated DeKalb County: no county rule sets this, because DeKalb County's own reviewed answer confirms it has no county-wide zoning ordinance.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • This does not establish rules administered by incorporated municipalities.
    • Septic, building-code, floodplain, subdivision, and other non-zoning rules may still apply.
    “DeKalb County does not have zoning at this time.”
  • Manufactured homes · by state lawUnrestricted

    Unincorporated DeKalb County: no county rule sets this, because DeKalb County's own reviewed answer confirms it has no county-wide zoning ordinance.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • This does not establish rules administered by incorporated municipalities.
    • Septic, building-code, floodplain, subdivision, and other non-zoning rules may still apply.
    “DeKalb County does not have zoning at this time.”
  • Accessory dwellings · by state lawUnrestricted

    Unincorporated DeKalb County: no county rule sets this, because DeKalb County's own reviewed answer confirms it has no county-wide zoning ordinance.

    • Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
    • This does not establish rules administered by incorporated municipalities.
    • Septic, building-code, floodplain, subdivision, and other non-zoning rules may still apply.
    “DeKalb County does not have zoning at this time.”
  • Mandatory utility hookupConditional

    Potable water and wastewater arrangements for county building permit submittals.

    • The county requires a potable water source, which may be a well or utility.
    • The county requires septic approval or sewer verification.
    • The reviewed sources do not establish that connection to public water or sewer is universally required.
    “Potable water source (well or utility) Septic approval or sewer verification”
  • Agricultural exemptionConditional

    Agricultural buildings in DeKalb County.

    • Available only for agricultural buildings used solely for farm purposes.
    • All structures must still comply with applicable building codes and applicable setback requirements.
    “Agricultural buildings used solely for farm purposes may be exempt.”
    One more reviewed finding on this topic
    • Conditional — Agricultural buildings used solely for farm purposes in unincorporated DeKalb County.
      “Agricultural buildings used solely for farm purposes may be exempt. All structures must still comply with applicable building codes and setback requirements where applicable.”
  • Driveway accessLimited

    Driveway information for DeKalb County building-permit applications.

    • A site plan must identify the driveway.
    • The opened official page does not establish a separate driveway-access permit or approval standard.
    “Site plan (boundaries, setbacks, driveway, septic/well)”
  • Permit feesPublished (with conditions)

    DeKalb County Building Department permits.

    • Calculated fees include required inspections, up to three re-inspections, and plan reviews.

    residential fee: 0.75 USD per square foot · commercial fee: 1 USD per square foot · commercial renovation fee: 0.5 USD per square foot · residential renovation fee: 0.35 USD per square foot

    “Residential: $0.75 per square foot Commercial: $1.00 per square foot Renovations: Commercial- $0.50 per sq ft. -- Residential- $0.35 per sq. ft.”
    One more reviewed finding on this topic
    • Published (with conditions) — Building permit fees in unincorporated DeKalb County.
      “Residential: $0.75 per square foot Commercial: $1.00 per square foot Renovations: Commercial- $0.50 per sq ft. -- Residential- $0.35 per sq. ft.”
  • Permit processPartial

    Building permit application process in unincorporated DeKalb County.

    • Required submittals include a site plan, potable water source, septic approval or sewer verification, construction plans, and proof of ownership.
    • Owner and contractor information are required; contractor license and insurance are required if applicable.
    • Permits must be issued before work begins.
    • Approved plans must be available on site.
    • Changes from approved plans require review and approval.
    “Site plan (boundaries, setbacks, driveway, septic/well) Potable water source (well or utility) Septic approval or sewer verification”
    One more reviewed finding on this topic
    • Published (with conditions) — DeKalb County building-permit applications.
      “Site plan (boundaries, setbacks, driveway, septic/well) Potable water source (well or utility) Septic approval or sewer verification”

Tennessee rules that apply here

  • Who permits septicMixed (with conditions)

    Tennessee subsurface sewage disposal system construction permitting and related SSDS administration statewide.

    • The Tennessee Division of Water Resources administers SSDS permitting in non-contract counties.
    • Permit packages and Certificate of Completion packages for sites in contract counties are submitted directly to the contract county.
    • The listed contract counties are Blount, Davidson, Hamilton, Jefferson, Knox, Madison, Sevier, Shelby, and Williamson.
    • Installer permits are valid statewide, but contract counties may require an additional permit.
    “Permit packages and Certificate of Completion Packages for sites located in the contract counties listed below should be submitted directly to the contract county.”
    3 more reviewed findings on this topic
    • State (with conditions) — Subsurface sewage disposal systems in DeKalb County, a non-contract county listed outside the state contract-county program.
      “For information, questions or concerns regarding Septic or Groundwater issues, contact The Tennessee Department of Environment and Conservation (TDEC) at 931-520-6688.”
    • State (with conditions) — Subsurface sewage disposal systems serving property in DeKalb County.
      “Completed application forms and application fees should be sent to the Division of Water Resources at the appropriate Environmental Field Office.”
    • Mixed (with conditions) — Statewide subsurface sewage disposal system permitting and assistance, with specified contract counties providing ground water protection services in their own areas.
      “NOTE: Some counties provide ground water protection services for their own areas. The online application form is not to be submitted for services requested in the following metropolitan or contact counties: Blount County, Davidson County/Nashville, Hamilton County, Jefferson County, Knox County, Madison County, Sevier County, Shelby County, Williamson County.”
  • Septic permitRequired

    Construction, installation, modification, or repair of residential, commercial, or industrial septic systems in Tennessee.

    • A permit is required before construction, modification, or repair.
    • A septic system permit should be obtained before starting dirt work or construction of any building, including the building pad.
    • Repair permits have no permit fee.
    • Alternative systems require an extra-high intensity soils map prepared by a Tennessee-licensed soils consultant.
    • Contract counties 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: 0 USD (Repair construction inspection fee is $100)

    “A septic system permit is required for the construction, modification or repair of a septic system. This permit ensures that the septic system design complies with state regulations and safeguards your health by properly managing wastewater.”
    2 more reviewed findings on this topic
    • Required — Construction of a subsurface sewage disposal system in non-contract Tennessee counties, including DeKalb County.
      “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.”
    • Required — Installation or repair of a subsurface sewage disposal system in DeKalb County.
      “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.”
  • Septic inspectionRequired

    Installation of subsurface sewage disposal systems in Tennessee.

    • The installer must notify the Division when installation is complete.
    • A final inspection is scheduled before the system is covered.
    • TDEC inspects each SSDS installation for compliance with permit conditions and regulatory requirements.
    • Inspection fees vary by system type: $100 for new conventional or large-diameter graveless pipe systems, $200 for alternative systems, and $100 for repair construction inspections.

    new conventional construction inspection fee: 100 USD · alternative construction inspection fee: 200 USD · repair construction inspection fee: 100 USD

    “The applicant or SSDS installer must notify the Division when a system has been installed so that it can be inspected and approved.”
    One more reviewed finding on this topic
    • Required — Third-party final inspection and completion process for subsurface sewage disposal systems in non-contract Tennessee counties, including DeKalb County.
      “The Division inspects each SSDS installation to ensure that it was installed in accordance with permit conditions and regulatory requirements.”
  • Subdividing landRegulated (with conditions)

    Division of tracts or parcels in DeKalb County where a septic system is or will be used.

    • A subdivision evaluation is required for division into two or more lots, sites, or other divisions for immediate or future construction where septic will be used.
    • A survey and soils map must be submitted.
    • The soils map must be prepared by a soils consultant licensed in Tennessee.
    • A subdivision does not include division into two or more tracts or parcels when all are five acres or larger.

    minimum acreage exception: >= 5 acres (all resulting tracts or parcels)

    “A Subdivision Evaluation is required if you want to divide any tract or parcel of land into 2 or more lots, sites or other divisions for the purpose of immediate or future construction of houses, buildings, or other development where a septic system is or will be used.”
  • Building in a floodplainLimited

    Development in or near mapped floodplains throughout Tennessee, insofar as Tennessee's statewide floodplain-management guidance describes locally administered requirements.

    • Floodplain development requirements are managed locally by the community where the property is located.
    • Each NFIP-participating community has a local floodplain administrator who helps manage development in mapped flood hazard areas.
    • If the property is inside city limits, contact the city floodplain administrator; if outside city limits, contact the county floodplain administrator.
    • Local review may be required before development begins in a regulated floodplain.
    • Requirements vary by community and are based on the local floodplain management ordinance and flood zones mapped in that community.
    • Development activity that may require local review includes construction, repairs, substantial improvements, placement of fill, grading, excavation, manufactured homes, accessory structures, or other development activity.
    • Floodplain management ordinances are adopted, administered, and enforced by the local community, not by TEMA.

    local review before development in a regulated floodplain: may be required (Requirements vary by community and mapped flood zone.)

    “Floodplain development requirements are managed locally. Each community that participates in the National Flood Insurance Program has a local floodplain administrator who helps manage development in mapped flood hazard areas. [...] If the property is inside city limits, contact the city floodplain administrator. If the property is outside city limits, contact the county floodplain administrator. [...] Local review may be required before development begins in a regulated floodplain. Requirements vary by community and are based on the local floodplain management ordinance and flood zones mapped in that community.”
  • 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.

  • Off-grid sanitation — Off-grid sanitation systems in DeKalb County.
  • Well permit — Private wells serving property in DeKalb County.
  • Short-term rentals — Short-term rentals in DeKalb County.

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 DeKalb County, Tennessee

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

DeKalb County scores 73/100 on the Bolthole Index, a strong county profile. Its strengths: manageable long-term carry cost and mixed durability signals.

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

DeKalb County generally requires a residential building permit, and it has no county-wide zoning. Onsite septic is permitted by Tennessee Department of Environment and Conservation (TDEC). 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.

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

Living in an RV on your own land in DeKalb County is allowed: Unincorporated DeKalb County: no county rule sets this, because DeKalb County's own reviewed answer confirms it has no county-wide zoning ordinance. Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits. This does not establish rules administered by incorporated municipalities. A tiny home is allowed. Confirm with the county before relying on it.

How much does land cost in DeKalb County, Tennessee?

Land in DeKalb County runs about $4,806 per acre, based on the latest county data.

What is the water situation in DeKalb County?

DeKalb County gets about 56" of rain a year, with severe drought in roughly 3.8% of years.

How remote is DeKalb County?

A representative private-land location has about 52,243 people within a 30-minute drive and 3,463,880 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.

How DeKalb compares in Tennessee

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