Building permits inside the City of Knoxville are issued by Plans Review and Inspections on the 2024 International Codes with local amendments — a newer set than Knox County's — through the Accela Citizen Access and KnoxPlans portals, with every permit lapsing after 365 days.
This Knoxville building permit guide covers what requires a permit, the 2024 codes the city enforces with local amendments, the Accela Citizen Access and KnoxPlans electronic review portals, the rule that every permit becomes invalid after 365 days, the right-of-way permit for sidewalks and driveways, and the homeowner registration pathway.
Scope: inside the City of Knoxville limits. Unincorporated Knox County and the Town of Farragut permit their own work on their own code editions.
Every Knoxville permit expires at one year. A permit that has not progressed becomes invalid after 365 days and may be renewed annually, so a stalled project can quietly lose its permit. And because many Knoxville addresses are actually served by Knox County on an older code edition, confirm the parcel is inside the city limits before you file.
What requires a permit in Knoxville?
Building permits inside the City of Knoxville are issued by the City's Plans Review and Inspections Division, which is separate from Knox County's Codes Administration. This is the standard Tennessee-metro split: the city permits work inside the city limits, the county permits the unincorporated area, and many Knoxville-addressed parcels are actually served by the county — so the first question on any project is which of the two departments owns your parcel.
The trigger is the familiar one: any owner or authorised agent who intends to construct, enlarge, alter, repair, move, demolish or change the occupancy of a building, or to install, alter or replace a regulated electrical, gas, mechanical or plumbing system, must obtain a permit — and in Knoxville, sidewalks and driveways in the public right-of-way also require one. Tennessee does not have one permitting model, it has three, and which one applies decides who your building official actually is. A jurisdiction that has adopted codes meeting the state minimum and enforces them is an exempt jurisdiction: it runs its own plan review, permits and inspections, and the state stays out except for state buildings, schools and a handful of licensed occupancies. A jurisdiction that has not is non-exempt, and the State Fire Marshal's Office is the building official there, working through contracted deputy building inspectors who cover several counties each. And a jurisdiction that has passed a two-thirds resolution under T.C.A. § 68-120-101(b)(1)(B) is an opt-out or non-code jurisdiction, where one- and two-family dwellings sit outside the statewide standards altogether.
Knoxville runs ahead of both the state floor and Knox County. The city enforces the 2024 editions of the IBC, IRC, IEBC and IFC with local amendments, alongside the 2018 IECC, the 2023 NEC with local amendments, and a set of other 2024-cycle codes. That is a newer set than the county's 2018 adoption, which is a concrete reason the city-or-county question changes the answer on a Knoxville project rather than being a formality.
No political subdivision of Tennessee may adopt or enforce standards of fire prevention, fire protection or building construction that are less stringent than the state minimum. Local amendments can add to the code; they cannot subtract from it.
Permit required
- New residential and commercial construction, and additions
- Structural alterations, repairs, and changes of occupancy
- Sidewalks and driveways in the public right-of-way
- Accessory structures and relocation of existing buildings
- Reroofs, decks, and exterior structural work
- Plumbing, mechanical, and gas work
- Electrical work — under the city's 2023 NEC adoption
- Demolition and manufactured or pre-manufactured home placement
Typically exempt
- Painting, flooring, and cosmetic finishes
- Routine maintenance not altering structure or a regulated system
- Work in unincorporated Knox County or the Town of Farragut
- Minor work below the city's published thresholds
Knoxville building department: who handles permitting
Plans Review and Inspections runs an electronic process. Applicants use Accela Citizen Access to look up permit records and status, and contractors must be associated with the appropriate registration or licence type in the system before applying. Plans are submitted through the city project portal or emailed to plansreview@knoxvilletn.gov, and corrections are handled through KnoxPlans (ProjectDox) where the review is run electronically.
The city publishes a homeowner registration pathway in its permit-registration system, which is the route an owner uses to self-permit work on their own property. As with the county, that owner-builder position is established through the registration rather than produced later, and it is governed by the state rule that reserves the exemption for work on your own property for your own use.
The 365-day expiry is the operational rule most likely to catch a slow project. Every permit becomes invalid after 365 days and may be renewed annually, so a permit pulled early for a project that then stalls can lapse before the work resumes. On a phased or slow job, track the permit date and renew before expiry rather than discovering a lapsed permit at the next inspection request.
| Detail | Information |
|---|---|
| Authority | City of Knoxville Plans Review and Inspections |
| Covers | Inside the City of Knoxville limits only |
| County / town run their own | Knox County (unincorporated) and Town of Farragut |
| Portals | Accela Citizen Access for records; KnoxPlans (ProjectDox) for review |
| Plans email | plansreview@knoxvilletn.gov |
| Codes enforced | 2024 IBC, IRC, IEBC, IFC with local amendments; 2018 IECC; 2023 NEC |
| Permit validity | Invalid after 365 days; renewable annually |
| Homeowner route | Homeowner registration pathway in the permit system |
| Right-of-way | Sidewalks and driveways in the public right-of-way need a permit |
City or county, and don't let the permit lapse. Many Knoxville addresses are actually served by Knox County, so confirm the parcel is inside the city limits before filing with Plans Review and Inspections. Register or log in to Accela Citizen Access, make sure your contractor registration or licence type is associated, and track the 365-day permit expiry on any slow job.
Knoxville and Knox County run separate departments on newer and older code editions respectively, and many Knoxville-addressed parcels are county rather than city. Confirm jurisdiction from the parcel before filing. Note also that the Town of Farragut inside Knox County permits its own work.
Knoxville permits: record types and what each covers
Plans Review and Inspections runs residential and commercial records through Accela and KnoxPlans. These are the records you are likely to file:
Residential permit types
| Permit type | What triggers it | Review path | Fee basis |
|---|---|---|---|
| New construction | New dwellings, additions, and accessory structures above the local size threshold | Plan review against the adopted residential code, plus zoning; the state floor is the 2018 IRC with Appendix Q | Valuation-based |
| Addition | Added interior space, including additions of thirty square feet or more | Structural and energy review; the thirty square foot interior trigger is smaller than most applicants expect | Valuation-based |
| Renovation / alteration | Structural changes, layout changes, or added plumbing, mechanical, or electrical | Plan review scaled to scope; renovations of existing one- and two-family dwellings sit outside the state minimum standards | Valuation-based |
| Reroof | Roof covering replacement, recover, and structural deck repair | Deck and dry-in inspection; plan review rarely required | Valuation or squares |
| Solar photovoltaic | Rooftop or ground-mount arrays, with or without battery storage | Structural review of the attachment locally, with the electrical scope usually permitted and inspected by the state | Flat or system-size based |
| Battery energy storage | Wall or floor-mounted storage added to a dwelling | Electrical review plus fire separation and location check | Flat or per-permit minimum |
| Electrical | Service changes, panel upgrades, new circuits, EV chargers, and rewiring | In most of Tennessee a state record bought through CORE and inspected by a contracted Deputy Electrical Inspector, not a local one | Per-permit or per-device |
| Plumbing | New piping, repipes, fixtures, gas piping, and water heater replacement | Trade review; performed by a licensed plumber or a Limited Licensed Plumber below the contractor threshold | Per-permit minimum or per-fixture |
| Mechanical / HVAC | Changeouts, new ductwork, and refrigeration | Trade review; the contractor licence attaches once the trade portion reaches the statutory threshold | Per-permit minimum or per-unit |
| Deck and porch | New decks, screened porches, and structural rebuilds | Structural review of footings, ledger attachment, and guards | Valuation or flat |
| Swimming pool | In-ground and above-ground pools | Barrier, bonding, and electrical review; the bonding scope generally follows the state electrical record | Valuation or flat |
| Manufactured home set-up | Placing or re-siting a manufactured home | Zoning, floodplain, and anchoring review; manufactured homes sit outside the state minimum building standards but not outside local zoning | Flat or per-unit |
| Demolition | Full or partial demolition of a dwelling or accessory structure | Utility disconnect confirmation and site restoration check | Flat |
| Right-of-way permit | A sidewalk or driveway in the public right-of-way | Required separately from the building permit for work in the right-of-way | Flat |
| Homeowner-permitted work | An owner self-permitting on their own property | Through the city's homeowner registration pathway in the permit system | Valuation-based |
Commercial permit types
| Permit type | What triggers it | Review path | Fee basis |
|---|---|---|---|
| New commercial construction | Ground-up commercial, industrial, and institutional buildings | Concurrent review against the adopted building code, fire, and zoning; the state floor is the 2021 IBC with Tennessee amendments | Valuation-based |
| Tenant improvement / upfit | Interior fit-out of an existing tenant space | Building, trade, and life-safety review; accessibility attaches on change of use | Valuation-based |
| Change of occupancy | Converting a building or space to a different use group | Occupancy classification, egress, and accessibility review | Valuation or flat |
| Commercial electrical | Service, distribution, and branch circuit work | State record in most jurisdictions unless the municipality is one of the roughly thirty-five authorised to inspect its own electrical | Per-permit or valuation |
| Commercial plumbing | Process piping, fixtures, backflow, and grease waste | Trade review; backflow and grease interceptor sign-off where applicable | Per-fixture or valuation |
| Commercial mechanical | Rooftop units, kitchen exhaust and hood systems, and refrigeration | Trade review; hood and suppression systems draw fire review alongside mechanical | Per-unit or valuation |
| Commercial reroof | Roof covering replacement on a commercial structure | Deck, dry-in, and attachment inspection | Valuation or squares |
| Signage | Wall, ground, and illuminated signs | Zoning review for size and placement, plus electrical where illuminated | Flat or per-sign |
| Land disturbance | Clearing, grading, and stormwater-triggering site work | Erosion and sediment control review, separate from the building permit | Acreage-based |
| Commercial demolition | Full or partial demolition of a commercial structure | Utility disconnect, asbestos notification, and site restoration | Flat or valuation |
| State Fire Marshal plans review | Occupancies requiring State Fire Marshal approval, including schools and certain licensed facilities | Filed with the state through the plans submittal portal, in addition to and not instead of the local record | State fee schedule |
| Commercial building permit | Commercial construction or tenant work | Reviewed against the city's 2024-cycle codes through KnoxPlans | Valuation-based |
| Permit renewal | A commercial project running past one year | Every permit becomes invalid after 365 days and is renewed annually | Flat |
Residential
- Single-discipline review in most cases
- The electrical record is usually a separate state permit, not a line on the building permit
- Contractor licence attaches at the statutory threshold; a Home Improvement licence may apply below it in nine counties only
- Septic properties need TDEC approval before ground is broken
Commercial — multi-discipline
- Concurrent review across building, trades, fire, and zoning
- Signed and sealed plans across every affected discipline
- The licensee's monetary limit caps the job value, separately from the permit
- Accessibility and life-safety review attach to any change of occupancy
Records you will actually see in Knoxville
| Record | What it covers |
|---|---|
| New residential building | New construction, pre-manufactured placement, or relocation |
| Residential addition | Expanding an existing dwelling |
| Commercial building permit | Commercial construction and tenant work |
| Right-of-way permit | Sidewalks and driveways in the public right-of-way |
| Accessory structure | Detached buildings above the city threshold |
| Plumbing / mechanical / gas | Trade permits under the city's adopted codes |
| Electrical permit | Under the city's 2023 NEC adoption |
| Demolition permit | Full or partial demolition |
Solar permits in Knoxville
Solar is reviewed on two tracks at once in Tennessee, and in most of the state those two tracks belong to two different governments. The structural side — attachment detail, rail spacing, and whether the existing framing carries the added dead load — is a local building review. The electrical side — conductors, overcurrent protection, rapid shutdown, labelling, and the service or supply-side connection — usually runs on a state electrical record instead, against the National Electrical Code edition the state programme enforces.
A residential solar installation inside the City of Knoxville is a building permit for the structural attachment plus an electrical permit — and the electrical here is the city's, under Knoxville's own 2023 NEC adoption, rather than a state permit. That is the opposite of unincorporated Knox County, where electrical is generally the state's. So a solar job just inside the city line and one just outside it are handled differently, which is one more reason to confirm the parcel before you file. Watch the 365-day permit clock on a slow installation.
That split is the most common cause of a stalled Tennessee solar job. An installer who files the building record locally and assumes the electrical inspection comes with it will sit waiting for an inspector who was never booked. Confirm at the outset whether your jurisdiction is one of the roughly thirty-five municipalities authorised to run its own electrical inspections, or whether the electrical permit has to be bought from the state.
Interconnection runs on a third clock. Tennessee is served by the Tennessee Valley Authority through local power companies — municipal electric systems and rural electric cooperatives — and each sets its own application, meter and witness-test sequence. Permission to operate is not something the building department controls, so plan for the tracks to finish at different times.
Roofing permits in Knoxville
A roof covering replacement needs a permit in most Tennessee jurisdictions that enforce their own codes. The permit is usually quick, but it is not optional, and the inspection that matters happens before the covering goes on rather than after.
Tennessee has no statewide product-approval database, so there is no approval number to search for or cite on the application. The assembly has to comply with the adopted code and the manufacturer's listed installation instructions, and that pairing is what the inspector checks — which makes the manufacturer's instructions a document worth having on site.
Reroofing requires a permit inside the City of Knoxville and is filed through Accela. The work is reviewed against the city's 2024-cycle codes with local amendments, and a residential reroof is charged against the value of the improvements. Because every permit becomes invalid after 365 days, a reroof that stalls between tear-off and final can lose its permit — renew before expiry rather than after a lapse.
Sequencing is where reroofs go wrong. The deck and dry-in condition has to be visible when the inspector arrives, so covering it first means opening it back up. Where a previous layer has been torn off, expect attention to deck fastening and to any sheathing replaced along the eaves. Note also that a roofing subcontractor is licensed on the value of the roofing portion alone once that portion reaches the statutory threshold.
Knoxville permit cost
Knoxville building permit fees are set by Plans Review and Inspections and assessed against valuation and construction documents at plan review. The city enforces its own newer code set, which can change plan-review scope relative to the county, so the fee basis is the city's schedule rather than the county's.
Confirm current amounts against the division before budgeting. Factor in the 365-day expiry as a planning cost on a slow project — an annual renewal is cheaper than a lapsed permit that has to be re-established, and it keeps the approved plans and inspection history attached to the original record.
| Fee component | How it works |
|---|---|
| Basis | Valuation-based, set by Plans Review and Inspections at plan review |
| Plan review | Through the city project portal and KnoxPlans (ProjectDox) |
| Permit validity | Invalid after 365 days; annual renewal available |
| Right-of-way | Sidewalk and driveway permits for work in the public right-of-way |
| Electrical | Under the city's own 2023 NEC adoption with local amendments |
| Septic properties | Health Department certification required where there is no sewer |
| Confirm | Against Plans Review and Inspections before budgeting |
Want a precise number for a specific Knoxville project? Send us the scope and we will price the permit path before you file.
Knoxville trade permits
Trade permits run under the city's own adopted codes, including its 2023 NEC. Four Knoxville specifics decide whether your application moves:
Register in Accela before applying
Contractors must be associated with the appropriate registration or licence type in Accela Citizen Access before applying. An application from an unregistered account stalls; set up the association first.
The permit expires at one year
Every permit becomes invalid after 365 days and may be renewed annually. On a phased job, track the permit date and renew before expiry rather than discovering a lapsed permit at the next inspection.
Right-of-way work needs its own permit
Sidewalks and driveways in the public right-of-way require a permit in Knoxville, separately from the building permit. Scope that in on any project that touches the frontage.
City limits only
Plans Review and Inspections permits work inside the city limits. Unincorporated Knox County and the Town of Farragut run their own permitting on their own code editions, so confirm the parcel is city before you file.
Knoxville permit application: how to apply step by step
Here is how to get a building permit in Knoxville, from confirming the requirement through to close-out. Each step below corresponds to a real decision point where projects commonly stall.
Many Knoxville addresses are served by Knox County, and the Town of Farragut permits its own work. Settle jurisdiction from the parcel before you start, because the city and county are on different code editions and different portals.
Register or log in to Accela Citizen Access and make sure your contractor registration or licence type is associated. Homeowners use the city's homeowner registration pathway to self-permit.
Design to the city's 2024 IBC, IRC, IEBC and IFC with local amendments, the 2018 IECC and the 2023 NEC. Prepare the application, valuation, construction documents and site plan for plan review.
Submit through the city project portal or email plansreview@knoxvilletn.gov, and upload plans and respond to correction comments through KnoxPlans (ProjectDox) where requested. Scope in a right-of-way permit if the work touches the frontage.
Clear plan review against the city's adopted codes, pay the city fee, and pull the permit — noting it becomes invalid after 365 days. Trade permits run under the city's adopted codes including its own NEC.
Book inspections, run through to final and the certificate of occupancy, and renew the permit annually if a slow project runs past the one-year mark before completion.
Inspections in Knoxville
Inspections are scheduled against the issued permit and run through the city's own inspection division, with typical checkpoints running footing and foundation, trade rough-ins, framing, insulation and final, reviewed against the city's 2024-cycle codes. The permit and approved plans should be on site.
The 365-day expiry shapes the inspection timeline more than in most jurisdictions. Because a permit becomes invalid after a year, a project that goes quiet between inspections risks a lapsed permit before the next one is requested. Renewing annually keeps the record, the approved plans and the inspection history attached to the original permit rather than forcing a fresh start.
Because Knoxville enforces its own electrical adoption — the 2023 NEC with local amendments — the electrical inspection here is the city's, unlike unincorporated Knox County where electrical is generally a state permit. That is one more reason the city-or-county determination changes the practical shape of a Knoxville project, not just the letterhead.
Use Accela Citizen Access to look up permit records and inspection status before taking on an existing Knoxville building, and watch the 365-day clock on any active permit. A lapsed permit discovered at an inspection request is a slower path than an annual renewal filed on time.
Knoxville permit search and official resources
The City of Knoxville publishes its plans review process, adopted codes and permit portals online, with the state and county resources that sit alongside them.
- City of Knoxville Plans Review and Inspections
- Accela Citizen Access permit lookup
- Knoxville adopted codes
- Knox County Codes Administration (unincorporated areas)
- TN Board for Licensing Contractors
- State electrical permits (CORE)
- State Fire Marshal codes enforcement
Frequently asked questions
Who issues building permits in Knoxville, TN?
The City of Knoxville's Plans Review and Inspections Division, for work inside the city limits. It is separate from Knox County Codes Administration, which permits the unincorporated area. Many Knoxville-addressed parcels are actually served by the county, so confirm jurisdiction from the parcel.
Which building code does Knoxville enforce?
The 2024 editions of the IBC, IRC, IEBC and IFC with local amendments, alongside the 2018 IECC, the 2023 NEC with local amendments, and other 2024-cycle codes. That is a newer set than Knox County's 2018 adoption, which is why the city-or-county question changes the answer.
How do I apply for a Knoxville building permit?
Register or log in to Accela Citizen Access and make sure your contractor registration or licence type is associated. Prepare the application, valuation, construction documents and site plan, then submit through the city project portal or email plansreview@knoxvilletn.gov, using KnoxPlans (ProjectDox) for corrections.
How long is a Knoxville building permit valid?
Every permit becomes invalid after 365 days and may be renewed annually. A stalled project can lose its permit at the one-year mark, so on a phased job track the permit date and renew before expiry rather than after a lapse.
Do I need a permit for a driveway or sidewalk in Knoxville?
Yes, where it is in the public right-of-way. Knoxville requires a permit for sidewalks and driveways in the public right-of-way, separately from the building permit, so scope it in on any project that touches the frontage.
Does the city or the county issue my Knoxville-area electrical permit?
Inside the city, Knoxville issues electrical under its own 2023 NEC adoption with local amendments. In unincorporated Knox County, electrical is generally a state permit through CORE. Confirming the parcel is city or county therefore changes where the electrical permit comes from.
Can I pull my own permit as the owner in Knoxville?
Yes, through the city's homeowner registration pathway in the permit system. As with the state rule generally, the owner-builder route is for work on your own property for your own use, established through registration rather than produced later.
Do I need a contractor licence in Knoxville?
A Tennessee contractor licence is required to bid or perform work valued at twenty-five thousand dollars or more, including labour and materials, and the same threshold reaches trade subcontractors on their own portion. Contractors must also be registered in Accela before applying.
Do I need a Home Improvement licence in Knoxville?
Knox County, which contains Knoxville, is one of nine Tennessee counties where the Home Improvement licence applies, for residential improvement work from three thousand dollars up to just under the twenty-five thousand dollar contractor threshold. Above that a full state contractor licence is required.
What portals does Knoxville use for permits?
Accela Citizen Access to look up permit records and status, and KnoxPlans (ProjectDox) for electronic plan review and corrections. Plans are submitted through the city project portal or emailed to plansreview@knoxvilletn.gov.
Does Knoxville check my HOA covenants?
No. Deed restrictions, covenants and subdivision regulations are private matters between the owner and the subdivision. A permit that clears the city can still breach a covenant, and the city will not have checked.
How do I confirm a Knoxville parcel is city and not county?
Use Accela Citizen Access and the city and county resources to confirm which department serves the parcel, because many Knoxville addresses are served by Knox County and the Town of Farragut permits its own work. The two run on different code editions and different portals.
Simplify Knoxville permitting with Alliance Permitting
Knoxville's newer 2024 code set, its Accela and KnoxPlans portals, its right-of-way permit and its 365-day permit expiry reward applicants who confirm the parcel is city, register correctly, and track the permit clock on a slow job.
Trusted by leading builders, developers, and national contractors — 21 years of filing in the jurisdictions we write about.
Contractors and builders choose Alliance for Knoxville because the work is done by people who have stood at the counter:
- Right authority — City of Knoxville, unincorporated Knox County, or the Town of Farragut, resolved from the parcel.
- Registered correctly — contractor registration or licence type associated in Accela before the application.
- Permit kept alive — the 365-day expiry tracked and renewed on time on any phased or slow project.
- Right code set — plans built to the city's 2024-cycle codes, not the county's 2018 adoption.
Alliance Permitting is a permit documentation and expediting service in Tennessee. We are not a law firm and do not provide legal advice, and we are not the permitting authority.
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More Tennessee permitting guides
This guide is provided by Alliance Permitting for general information about Knoxville permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.