Why permits exist
A building permit is not paperwork for its own sake. It means a local office reviews what you plan to build, and an inspector looks at the work at set points before it gets covered up. Framing, wiring, drains and gas lines all end up inside walls and floors. Inspections are the only time anyone outside the job sees them.
This guide is general. Rules differ from one office to the next and change over time, so always confirm the details for your address with your local permitting office before work begins.
Work that usually needs a permit
Painting, new flooring, replacing cabinets in the same spot or swapping a faucet usually does not need a permit. Work that changes the structure or the systems of the house usually does. Common examples:
- Structural changes, such as removing or moving a wall, cutting a new window or door opening, or changing a beam or roof framing.
- Additions, sunrooms, second stories and new garages, which also bring zoning questions like setbacks and lot coverage.
- New electrical circuits, a panel change or upgrade, and new wiring in a finished basement or garage.
- Plumbing changes, such as moving fixtures, adding a bathroom, or running new drain, vent or water lines.
- HVAC work, including new ductwork, a new system or extending heating and cooling into a finished space.
- Gas line work for ranges, fireplaces, water heaters or outdoor equipment.
- Decks, porches and other attached structures, depending on size and height.
Who issues permits around Knoxville
There is no single permit office for the area. Which office handles your project depends on where the property sits, not on its mailing address.
Homes inside the City of Knoxville go through the city. Homes in unincorporated Knox County, which includes much of Powell, Karns, Hardin Valley and parts of West Knox, go through Knox County. The Town of Farragut has its own office and its own rules. Maryville, Oak Ridge, Lenoir City and the towns of Blount, Anderson and Loudon counties each have their own offices as well.
Each one sets its own application steps, plan requirements, fees and inspection scheduling. Some ask for drawings for work that another office would approve with a simple form. A mailing address can say Knoxville while the house sits in the county, so it is worth checking the jurisdiction first.
Inspections during the job
A permit usually comes with a series of inspections that happen at specific stages of the work. The inspector has to see certain things before they are covered, so the schedule of the job is built around those visits.
- Footing or foundation inspections for additions and new garages, before concrete is placed.
- Rough-in inspections of framing, wiring, plumbing and ductwork, before insulation and drywall.
- Insulation inspections in some jurisdictions, before walls are closed.
- A final inspection when the work is complete, which closes the permit.
HOA approval is separate
Many neighborhoods in Farragut, Hardin Valley, West Knox and elsewhere have a homeowners association with its own architectural review. HOA approval and a building permit are two different things. One does not replace the other.
An HOA may care about exterior materials, colors, rooflines, fences, garage doors and how an addition looks from the street. A permit office cares about safety and code. If your project changes the outside of the house, check your covenants early, because HOA review can take its own time and may ask for changes to the plan.
Why unpermitted work causes trouble at sale
Unpermitted work often stays quiet until the house goes on the market. Then it can come up in several ways:
- Sellers are generally expected to disclose known work done without permits.
- A buyer's home inspector may flag wiring, plumbing or framing that does not look like it was inspected.
- Square footage in an unpermitted basement or addition may not be counted the way the owner expected.
- Lenders, appraisers or insurers may raise questions.
- Getting work permitted after the fact can mean opening finished walls so an inspector can see inside.
How we handle permits
When we walk a property and write an estimate, we look at which parts of the work are likely to need a permit and which office has jurisdiction, and we plan the schedule around the inspections. Requirements are always confirmed with the local office for that address.
If you are planning a remodel and want to know what the permit side will look like, call 865.263.6444 or send us the details.