Knox County, Kentucky Building Permit Guide

The state’s contact sheet for Knox County, updated September 10, 2026, lists one local building inspector without naming the area covered; the City of Barbourville lists the same person as its building inspector at City Hall, 196 Daniel Boone Drive (606-546-6197). The published sources show no county building permit for the unincorporated county. Where no local program applies, the state’s Division of Building Code Enforcement (502-573-0373) must approve every project other than a single-family house before work starts, and houses need state HVAC and plumbing permits and a local electrical inspection.

What requires a building permit in Knox County?

The answer depends on whether a local inspection program covers the site. For land with no local program, the state’s rule is plain: all construction projects except single-family dwellings must be submitted to the Division of Building Code Enforcement and approved before construction begins. That covers new buildings, additions, alterations and renovations, and buildings whose use changes. Before relying on that route for a site near Barbourville, call City Hall to ask whether its building inspector covers the address.

Even without a building inspection, a house must be built to the Kentucky Residential Code; the state says the only inspections in that case are of the mechanical systems, by its HVAC division, and of the wiring, by the local electrical inspector, and any permitted plumbing is inspected by the state plumbing inspector.

What the county decides and what the state holds

The state sheet points anyone looking for a local electrical inspector to the County Judge/Executive’s office or to the city office where the work is done, and Knox County takes part in the National Flood Insurance Program. The state Department of Housing, Buildings and Construction holds commercial plan review and inspection where no local program covers the site, all HVAC and plumbing permits, manufactured home installation, elevators, boilers and the trade licenses.

Knox County building department: who handles permitting

The Knox County sheet lists one local building inspector, followed by the state building, manufactured housing, electrical, elevator, HVAC, plumbing and boiler inspectors assigned to the county. The City of Barbourville’s staff list names the same person as the city’s building inspector, alongside the city’s chief administrative officer, who also serves as code enforcement officer, and the street superintendent. The state’s Whitley County sheet, updated the same day, lists the same person as Whitley County’s local building inspector, so ask City Hall which jobs in unincorporated Knox County, if any, that inspector covers.

Cities in Knox County

Knox County permit types

Most state filings for a Knox County project are made online in the state’s SmartGov portal, which handles building plan review, HVAC, plumbing, manufactured housing and fire prevention applications and asks you first to decide whether the project is under local, expanded or state jurisdiction.

Residential permits

Where no local program applies, a single-family house needs no building permit in the published sources. The permits it does need are the state HVAC permit, bought by a licensed HVAC contractor; the state plumbing permit, bought by a master plumber or by the homeowner for a home they live in or are building for themselves, with an affidavit filed before work begins (one new-home homeowner permit per person in five years); the electrical permit and inspection through the local electrical inspector; and, off sewer, a septic permit from the health department. A manufactured home is set up under the state manufactured housing section.

Building or remodeling a home here? Alliance handles residential permit applications, so the crew isn't waiting on the counter.

Commercial permits

A commercial, multi-family or public building is submitted to the Division of Building Code Enforcement with its construction documents, and construction waits for state approval unless a local inspector’s program covers the site and the building is in local jurisdiction. Elevators and boilers have their own state programs, with inspectors listed on the county sheet.

For tenant improvements and new commercial builds, Alliance handles commercial building permits through issuance. More on this: commercial building permits explained.

What comes before the building permit

• Sewer or septic. Barbourville Utilities’ sewage system, begun in 1950, serves all of Barbourville and several other areas of the county; elsewhere, a site evaluation and septic permit from the health department on Hospital Drive.
• Utility service. Barbourville Utilities supplies electric and water service across Barbourville and Knox County; new customers apply by email with a copy of a driver’s license.
• Floodplain. Barbourville sits on the Cumberland River; on land in a mapped flood zone, ask about local floodplain review before building. Barbourville is protected by a flood wall built after the 1977 flood and inspected under federal rules by Barbourville Utilities.
• State highways. An entrance or work on a state route needs a Kentucky Transportation Cabinet permit from the District 11 office, 603 Railroad Avenue, Manchester (606-598-2145).
• City streets. In Barbourville the street department maintains the non-state roads and sidewalks (606-546-4647).

Knox County permit costs and fees

Barbourville’s website posts no building permit fee schedule, so ask the city’s building inspector (606-546-6197) about any city fee. For a typical rural project the published charges are the state’s trade permit fees. State plumbing installation fees, in effect since March 1, 2022:

Plumbing example. A house with 14 openings pays $50 + (14 × $14) = $246; a small restaurant with 9 openings pays $50 + (9 × $20) = $230. HVAC fees are calculated in the state portal when the contractor buys the permit, septic fees by the health department (606-546-3486), and electrical inspection fees by the local electrical inspector.

Trade permits and who may pull them

• Electrical. The state portal does not issue electrical permits for private property; it sends applicants to the County Judge/Executive’s office, and the Knox County sheet adds the city office for work inside a city. A state electrical inspector is also assigned to the county.
• HVAC. Knox County is not on the state’s list of local HVAC jurisdictions (updated May 13, 2025), so HVAC permits are state permits, sold only to licensed or authorized people, and the state HVAC inspector assigned to Knox County inspects.
• Plumbing. State permit for new plumbing, relocated fixtures or drains, new or replaced house sewers and water services, backflow devices and water heaters. The plumbing inspector keeps desk hours at the health department on Tuesday mornings. Permits go to licensed master plumbers or to homeowners for plumbing in their own residences; all other work must be done by a licensed journeyman under a master plumber.
• Licenses. Electricians, plumbers and HVAC contractors are licensed by the state; a maintenance worker may repair plumbing but not replace or install fixtures, water heaters or lines.

How to get permits for a Knox County project

Review, corrections and what causes delay

For non-house buildings, the state’s approval controls the start date, so settle jurisdiction early and file complete documents. A homeowner plumbing permit must be in hand before any plumbing starts, the HVAC permit must be bought by a licensed or authorized person, and the plumbing inspector’s desk at the health department is open only on Tuesday mornings.

Inspections in Knox County

Where a project is in state jurisdiction, state building inspectors check it against the approved plans. A single-family house outside any local program receives no building inspection, but the state HVAC inspector checks the heating and cooling, the local electrical inspector the wiring, and the state plumbing inspector any permitted plumbing. Manufactured homes, elevators and boilers each have a state inspector assigned to the county. Inside Barbourville, ask the city’s building inspector which inspections the city makes.

Kentucky building code in Knox County

FEMA’s Community Status Book lists Knox County as a participant in the National Flood Insurance Program, with a current flood map effective May 18, 2021. The Cumberland River runs through Barbourville, where Barbourville Utilities publishes live river levels next to its flood wall information.

Kentucky has one mandatory statewide building code that local governments may not add to. Cities and counties enforce it and run zoning. The state reviews plans for larger and higher-risk buildings, and the local program reviews smaller ones. Kentucky rules

Permit search and official resources

State plan approvals and trade permits are applied for and tracked in SmartGov; questions about a state review go to 502-573-0373. Records of city permits in Barbourville are kept at City Hall.

• City of Barbourville: City Hall and staff
• Barbourville street and sanitation department
• Barbourville public notices
• Barbourville Utilities: water and wastewater
• Barbourville Utilities contacts
• Barbourville flood wall and river level
• State contact sheet for Knox County inspectors (Sept. 10, 2026)
• State building codes: places without a local program
• State Division of Building Code Enforcement
• State SmartGov permit portal
• State HVAC permits
• State list of local HVAC jurisdictions
• State plumbing permits and fees
• State plumbing FAQ: homeowner and farmstead rules
• Kentucky Transportation Cabinet permit offices
• Kentucky highway districts by county
• FEMA Community Status Book, Kentucky

Knox County building permit FAQ

Does Knox County have a building inspector?

The state sheet lists one local building inspector for Knox County, the same person Barbourville lists as its building inspector; it does not say which areas are covered, so ask City Hall at 606-546-6197.

Do I need a building permit for a house outside Barbourville?

The published sources show no county building permit for houses, but you need state HVAC and plumbing permits, an electrical inspection and, off sewer, a septic permit.

Who approves a new commercial building?

The state Division of Building Code Enforcement where no local program covers the site; 502-573-0373.

Where do I get a plumbing permit?

From the state plumbing inspector at the Knox County Health Department, 261 Hospital Drive, Barbourville, on Tuesdays from 8:00 to 9:30 a.m., or online.

Can I do my own plumbing?

Yes, in a home you live in or are building for yourself, with a state homeowner permit and affidavit before work starts.

Is my property on sewer?

All of Barbourville and several other areas are served by Barbourville Utilities (606-546-3187); elsewhere a septic permit is needed.

Who issues a permit for a driveway on a state road?

The Kentucky Transportation Cabinet’s District 11 office in Manchester, 606-598-2145.

Simplify Knox County permitting with Alliance Permitting

Alliance Permitting is a permit documentation and submission company in Kentucky. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Knox County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.