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§ TX Knox County
City building permits

City of Knox City

How to apply for a building permit in City of Knox City, Texas. Permit authority, application steps, fees, and inspection requirements.

Last verified
April 2026
On this page 5
§ 01

Permit authority

City of Knox City; City Hall / Mayor's Office

Street address
902 E Main St, Knox City, TX 79529; mailing address PO Box 188, Knox City, TX 79529-0188
Coverage
Knox City city limits only.
Online portal
City of Knox City
§ 02

When a permit is required

Permit triggers and exempt work for Knox City

Knox City code requires a floodplain development permit for development in areas of special flood hazard, and the airport-zoning article requires permits for material changes in land use and for structures or trees in the regulated airport zones.

For airport zoning only: trees or structures under 75 feet above ground when the stated location and height conditions are met and the structure does not exceed the applicable zone limit
  • Exempt For airport zoning only: trees or structures under 75 feet above ground when the stated location and height conditions are met and the structure does not exceed the applicable zone limit

Note: No public citywide exempt-work list for a general building permit program was found.

Required documents
  • For floodplain development permits: scaled plans showing location, dimensions, elevations, structures, and flood-hazard relationship data, plus elevation and floodproofing information
§ 03

Application process

Application → plan check → issuance → inspection → final

  1. 01
    Verify the parcel is inside Knox City limits.
  2. 02
    Determine whether the project is in a FEMA special flood hazard area or in an airport-zoning-regulated area around Knox City Municipal Airport.
  3. 03
    For floodplain-regulated work, submit a development-permit application to the floodplain administrator on city-furnished forms.
  4. 04
    For airport-zoning-regulated work, apply through the office of the mayor on a form furnished by the mayor.
  5. 05
    Wait for city review. The floodplain administrator reviews, approves, or denies floodplain development permit applications. Airport-zoning permit applications are considered by the joint airport zoning board through the mayor's office.
  6. 06
    If relief from floodplain standards is needed, the city council acts as the appeal board for variance requests.

Source: City of Knox City; City Hall / Mayor's Office ↗

§ 04

Required inspections

Scheduling and sequence

Typical sequence: The reviewed floodplain code requires permit review before development and ongoing administrative review for compliance.

§ 05

Frequently asked

Common questions about Knox City permits

01 Do I need a building permit in Knox City, TX?
Knox City code requires a floodplain development permit for development in areas of special flood hazard, and the airport-zoning article requires permits for material changes in land use and for structures or trees in the regulated airport zones.
02 How do I apply for a building permit in Knox City, TX?
To apply for a building permit in Knox City, TX, follow these steps: 1. Verify the parcel is inside Knox City limits. 2. Determine whether the project is in a FEMA special flood hazard area or in an airport-zoning-regulated area around Knox City Municipal Airport. 3. For floodplain-regulated work, submit a development-permit application to the floodplain administrator on city-furnished forms. 4. For airport-zoning-regulated work, apply through the office of the mayor on a form furnished by the mayor. 5. Wait for city review. The floodplain administrator reviews, approves, or denies floodplain development permit applications. Airport-zoning permit applications are considered by the joint airport zoning board through the mayor's office. 6. If relief from floodplain standards is needed, the city council acts as the appeal board for variance requests.
03 What work is exempt from building permits in Knox City, TX?
Not all construction work requires a permit in Knox City, TX. The following work is generally exempt: For airport zoning only: trees or structures under 75 feet above ground when the stated location and height conditions are met and the structure does not exceed the applicable zone limit. Note: No public citywide exempt-work list for a general building permit program was found. When in doubt, confirm with the local building department before starting work.
last verified April 2026 source City of Knox City; City Hall / Mayor's Office ↗ entry id permits/texas/knox/knox-city

Educational reference. Permit rules and fees change — confirm current requirements directly with City of Knox City; City Hall / Mayor's Office before applying. Jaspector is not legal advice.

§   Adjacent

Other jurisdictions in Knox County.

Same county, different permit office. Click for that jurisdiction's full guide.

All Knox County jurisdictions →