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County building permits

Unincorporated Dekalb County

How to apply for a building permit in unincorporated Dekalb County, Tennessee. Permit authority, application steps, fees, and inspection requirements.

Avg processing
Not publicly stated
Last verified
April 2026
On this page 6
§ 01

Permit authority

DeKalb County Building Department

Street address
1 South Public Square, Smithville, TN 37166
Coverage
This is the county permit authority for the county's unincorporated areas. The county page says DeKalb County does not have countywide zoning regulations.
Online portal
Portal
County web intake with linked permit application form
§ 02

When a permit is required

Permit triggers and exempt work for Dekalb County

County page says permits are required before work begins. Required submittals include site plan, potable water source, septic approval or sewer verification, construction plans, and proof of ownership.

Detached garages, sheds, barns, decks, and pole barns that are not occupied or conditioned
Agricultural buildings used solely for farm purposes may be exempt
If a structure is insulated, heated, cooled, or occupied, a permit is required
  • Exempt Detached garages, sheds, barns, decks, and pole barns that are not occupied or conditioned
  • Exempt Agricultural buildings used solely for farm purposes may be exempt
  • Exempt If a structure is insulated, heated, cooled, or occupied, a permit is required
Required documents
  • Site plan, potable water source, septic approval or sewer verification, construction plans, proof of property ownership, owner and contractor information, and contractor license and insurance if applicable.
Building code
County page does not list a single code title on the public summary page reviewed. The county notes that all structures must comply with applicable building codes and setback requirements where applicable.
Permit validity
Any issued permit becomes null and void if substantial work does not commence within six months or if work is suspended or abandoned for six months after starting, per the county application form.
Owner-builder
Homeowners may perform work on their primary residence once every two years, subject to verification and applicable law.
Contractor requirements
If total value exceeds $25,000, the work must be performed by a licensed contractor, as required by state law.
§ 03

Application process

Typical processing: Not publicly stated

  1. 01
    Confirm the property is in unincorporated DeKalb County and not inside Smithville, Alexandria, Liberty, or another municipality.
  2. 02
    Gather the site plan, water source, septic or sewer verification, construction plans, proof of ownership, and contractor information if applicable.
  3. 03
    Submit the county permit application.
  4. 04
    Wait for review and any required correction cycle.
  5. 05
    Obtain the permit before starting work.
  6. 06
    Keep the permit and approved plans on site and call for inspections at required stages.

Typical processing time: Not publicly stated

Source: DeKalb County Building Department ↗

§ 04

Fee schedule

Dekalb County building permit fees

Fee type
Amount
01
Minimum permit fee
Not a minimum flat fee; county uses square-foot based fees
02
Plan check fee
Included in the county fees, according to the public page
03
Permit fee formula
Square-foot based
04
Reinspection fee
The public page says the calculated fees include all required inspections, up to 3 re-inspections and plan reviews

Public page does not describe payment methods

Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.

§ 05

Required inspections

Scheduling and sequence

How to schedule
  • Not publicly stated (phone)
Inspection hours
The county lists inspector hours for general inquiries and permitting, but not a formal inspection schedule on the public page
Time windows
The county lists inspector hours for general inquiries and permitting, but not a formal inspection schedule on the public page

Typical sequence: Footing, framing, rough-in, and final inspections may be required

Fees include up to 3 re-inspections under the county fee summary

§ 06

Frequently asked

Common questions about unincorporated Dekalb County permits

01 Do I need a building permit in unincorporated Dekalb County, TN?
County page says permits are required before work begins. Required submittals include site plan, potable water source, septic approval or sewer verification, construction plans, and proof of ownership.
02 How much does a building permit cost in unincorporated Dekalb County, TN?
Building permit fees in unincorporated Dekalb County, TN are set by the local building department and vary by project type and valuation. The minimum permit fee is Not a minimum flat fee; county uses square-foot based fees. Fees are calculated as: Square-foot based. Plan check fee: Included in the county fees, according to the public page.
03 How do I apply for a building permit in unincorporated Dekalb County, TN?
To apply for a building permit in unincorporated Dekalb County, TN, follow these steps: 1. Confirm the property is in unincorporated DeKalb County and not inside Smithville, Alexandria, Liberty, or another municipality. 2. Gather the site plan, water source, septic or sewer verification, construction plans, proof of ownership, and contractor information if applicable. 3. Submit the county permit application. 4. Wait for review and any required correction cycle. 5. Obtain the permit before starting work. 6. Keep the permit and approved plans on site and call for inspections at required stages.
04 How long does it take to get a building permit in unincorporated Dekalb County, TN?
Building permit processing times in unincorporated Dekalb County, TN typically run Not publicly stated. Timelines can vary based on project complexity and current department workload.
05 What work is exempt from building permits in unincorporated Dekalb County, TN?
Not all construction work requires a permit in unincorporated Dekalb County, TN. The following work is generally exempt: Detached garages, sheds, barns, decks, and pole barns that are not occupied or conditioned; Agricultural buildings used solely for farm purposes may be exempt; If a structure is insulated, heated, cooled, or occupied, a permit is required. When in doubt, confirm with the local building department before starting work.
06 How do I schedule a building inspection in unincorporated Dekalb County, TN?
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in unincorporated Dekalb County, TN via: Not publicly stated.
last verified April 2026 source DeKalb County Building Department ↗ entry id permits/tennessee/dekalb/unincorporated

Educational reference. Permit rules and fees change — confirm current requirements directly with DeKalb County Building Department before applying. Jaspector is not legal advice.