The Loudon County Building Department, part of Planning and Codes Enforcement at 101 Mulberry Street in Loudon, is the building authority for unincorporated Loudon County on Tellico Lake, off Interstate 75 southwest of Knoxville. It enforces the 2012 International Codes and routes electrical to the state through the utility.
Two things shape the work here: the county is on the 2012 codes while the City of Loudon has moved to the 2021 editions, so the code standard changes at the city line; and electrical inspections are performed by state inspectors operating through the utility provider. Tellico Lake and the Tennessee River add waterfront review on shoreline parcels.
Scope: unincorporated Loudon County through the Building Department. Lenoir City, the City of Loudon, Greenback and Philadelphia permit their own work.
2012 codes in the county, and state electrical. Loudon County enforces the 2012 International Codes, while electrical inspections are performed by state inspectors through the utility provider. The City of Loudon uses newer 2021 codes, so confirm the parcel is unincorporated, and scope any Tellico Lake waterfront review early. A 24-hour line takes inspection requests.
What requires a permit in Loudon County?
The Loudon County Building Department, part of Planning and Codes Enforcement at 101 Mulberry Street, Suite 101 in Loudon, is the building authority for unincorporated Loudon County — a fast-growing county on the Tennessee River and Tellico Lake, about 25 miles southwest of Knoxville along Interstate 75. It reviews and approves building plans and inspects to code. Lenoir City, the City of Loudon, Greenback and Philadelphia run their own permitting.
The county has adopted and enforces the 2012 editions of the International Building Code, International Residential Code, International Plumbing Code and International Mechanical Code. Its inspectors are certified by the State of Tennessee and the International Code Council, and the minimum inspections include footings, slabs, framing, plumbing, mechanical, energy and final. A 24-hour inspection request line takes scheduling. 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.
Electrical is not a county permit: electrical inspections are performed by state inspectors who operate through the utility provider, so the electrical record and inspection sit with the state rather than the county. On a parcel without public sewer the septic approval comes first, and waterfront work on Tellico Lake or the Tennessee River can draw additional review. Note the City of Loudon enforces newer 2021 codes, so a parcel inside that city is a different standard from the county's 2012 set. 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
- Accessory structures above the county threshold
- Decks, pools, and exterior structural work
- Plumbing, mechanical, and gas work
- Electrical work — a state inspection through the utility
- Waterfront work on Tellico Lake or the Tennessee River
- New lots — under the county subdivision regulations
Typically exempt
- Painting, flooring, and cosmetic finishes
- Routine maintenance not altering structure or a regulated system
- Work inside Lenoir City, Loudon, Greenback, or Philadelphia
- Minor work below the county's published thresholds
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Get a free quote →Loudon County building department: who handles permitting
The Building Department covers the unincorporated county, and the code vintage is worth noting: the county is on the 2012 International Codes, while the City of Loudon has moved to the 2021 editions. That difference means a parcel a few hundred feet apart can be reviewed to a different code standard depending on whether it is inside a city, so settling the jurisdiction from the parcel is the first step.
The electrical arrangement is the state model with a local twist: electrical inspections are performed by state inspectors who operate through the utility provider, so the electrical permit and inspection run through the state rather than the county. The county issues the building permit and the plumbing, mechanical and gas permits, and its inspectors are certified by both the State of Tennessee and the International Code Council.
The lake shapes a meaningful share of Loudon County work. Tellico Lake and the Tennessee River give the county extensive shoreline, including large lake-oriented communities, so waterfront structures, docks and shoreline work can draw additional review beyond the standard building permit. Identify any waterfront review early, and confirm the septic approval on a parcel without public sewer.
| Detail | Information |
|---|---|
| Authority | Loudon County Building Department (Planning and Codes Enforcement) |
| Covers | Unincorporated Loudon County |
| Cities running their own | Lenoir City, Loudon, Greenback, Philadelphia |
| Office | 101 Mulberry Street, Suite 101, Loudon, TN 37774 |
| Phone | 865-458-4470 |
| Codes enforced | 2012 International Codes (IBC, IRC, IPC, IMC) |
| City of Loudon | Enforces newer 2021 codes inside its limits |
| Electrical | State inspection through the utility provider |
| Inspection line | 24-hour request line, 865-458-4680 |
2012 codes in the county, and state electrical. Loudon County enforces the 2012 International Codes, while electrical inspections are performed by state inspectors through the utility provider. The City of Loudon uses newer 2021 codes, so confirm the parcel is unincorporated, and scope any Tellico Lake waterfront review early.
Confirm from the parcel whether the site is unincorporated Loudon County or inside Lenoir City, Loudon, Greenback or Philadelphia, because both the permitting office and the code edition change at the city line — the City of Loudon in particular is on the 2021 codes while the county is on 2012.
In 2025, building permits issued in unincorporated Loudon County authorized 271 new privately owned housing units, all of them single-family homes, according to the U.S. Census Bureau Building Permits Survey.
Loudon County permits: record types and what each covers
Loudon County runs residential and commercial building records, with electrical through the state and utility. These are the records you are likely to file:
Not sure this scope needs a permit?
Get a free quote →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 30 square feet or more | Structural and energy review; the 30 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 residential code but are installed under state installation rules, and local zoning still applies | Flat or per-unit |
| Demolition | Full or partial demolition of a dwelling or accessory structure | Utility disconnect confirmation and site restoration check | Flat |
| New single-family dwelling | Building a new home in the unincorporated county | Building review against the 2012 codes; state electrical via the utility | Fee by scope |
| Waterfront structure | A dock or shoreline structure on Tellico Lake | Building review plus waterfront review beyond the permit | Fee by scope |
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Call 1-855-478-4290 →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 city or county is on the State Fire Marshal’s exempt list and inspects 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 new construction | A new commercial building in the county | Full building review; certain occupancies to the State Fire Marshal | Fee by scope |
| State electrical permit | Electrical work in the county | Inspected by state inspectors through the utility provider | State fee |
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 a TDEC septic construction permit before the system is installed, and some counties add their own
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 Loudon County
| Record | What it covers |
|---|---|
| Residential building permit | New homes, additions, alterations, and repairs |
| Commercial building permit | Commercial construction and tenant work |
| Accessory structure | Above the county threshold |
| Swimming pool | With barrier and bonding review |
| Plumbing / mechanical / gas | Trade permits under the 2012 codes |
| State electrical permit | Through the state and the utility provider |
| Waterfront / shoreline | Docks and shoreline work on the lake or river |
| Subdivision approval | New lots under the county subdivision regulations |
Rather not deal with the Loudon County building department?
Get a free quote →Solar permits in Loudon County
A residential solar installation in unincorporated Loudon County is a county building permit for the structural attachment plus a state electrical permit for the wiring, since electrical here is inspected by state inspectors operating through the utility provider rather than by the county. The county reviews the structural attachment to its 2012 codes. The local power company sets the meter release on an approved electrical inspection, so confirm the interconnection path early, and on a lakeside parcel scope any waterfront review.
Roofing permits in Loudon County
A re-roof in unincorporated Loudon County is a county building permit reviewed against the 2012 codes. A like-for-like replacement is straightforward; adding load or altering the roof structure draws closer review. Note the City of Loudon is on the newer 2021 codes, so a re-roof inside that city is reviewed to a different standard than the county's.
Tennessee solar jobs usually need a state electrical permit, unless the city or county runs its own electrical inspections, plus any local building review; roofing follows the adopted code and the manufacturer's instructions. Tennessee rules
Loudon County permit cost
Loudon County building permit fees are set by the Building Department against the submitted scope, with separate county plumbing, mechanical and gas permits. Because electrical runs through the state and the utility, that cost sits with the state rather than as a county line item.
Confirm the current fee basis with the department before budgeting, and account for the TDEC septic approval on a parcel without public sewer and any waterfront review on a Tellico Lake or Tennessee River parcel.
| Fee component | How it works |
|---|---|
| Building permit | Set by the Building Department against the submitted scope |
| Plumbing / mechanical / gas | County trade permits |
| Electrical | State inspection through the utility, not a county line item |
| Waterfront | Additional review on Tellico Lake or the Tennessee River |
| Septic properties | TDEC septic permit required before the system is installed |
| Subdivision | Review under the county subdivision regulations for new lots |
| Confirm | Fee basis with the Building Department before budgeting |
Want a precise number for a specific Loudon County project? Send us the scope and we will price the permit path before you file.
Loudon County trade permits
Electrical is a state inspection through the utility; the county is on 2012 codes. Four Loudon specifics decide whether your application moves:
Design to the county's 2012 codes
The unincorporated county enforces the 2012 International Codes, while the City of Loudon is on the 2021 editions. Confirm which standard governs the parcel, since a city parcel is reviewed to a different code than the county's.
Electrical is the state's, through the utility
Electrical inspections are performed by state inspectors who operate through the utility provider, so the electrical permit and inspection run through the state rather than the county. Budget for that separate state track.
Scope waterfront review early
Tellico Lake and the Tennessee River give the county extensive shoreline, so a dock, boathouse or shoreline structure can draw additional review beyond the building permit. Identify any waterfront review at the design stage.
Use the 24-hour inspection line
The county maintains a 24-hour inspection request line, and its inspectors are certified by the State of Tennessee and the International Code Council. Schedule inspections against the issued permit through that line.
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Get a free quote →Tennessee licenses contractors through the Board for Licensing Contractors for jobs of $25,000 or more; a Home Improvement licence applies below that only in the nine counties that opted in. Tennessee rules
Loudon County permit application: how to apply step by step
Here is how to get a building permit in Loudon County, from confirming the requirement through to close-out. Each step below corresponds to a real decision point where projects commonly stall.
Lenoir City, Loudon, Greenback and Philadelphia permit their own work. Settle jurisdiction from the parcel, noting the City of Loudon is on newer 2021 codes than the county's 2012 set.
Design to the county's 2012 International Codes, and confirm the current adopted editions and any amendments with the Building Department.
On a parcel without public sewer, obtain the TDEC septic approval. On a waterfront parcel, identify any Tellico Lake or Tennessee River review, and prepare a site plan.
Apply with the Building Department for the building permit and the county plumbing, mechanical and gas permits, and arrange the state electrical inspection through the utility provider.
On a project that divides land, clear the county subdivision regulations before proceeding.
Use the 24-hour inspection line to book county inspections, run the state electrical inspection on its own track, and carry the project through to the certificate of occupancy.
Inspections in Loudon County
County inspections are scheduled through the 24-hour request line against the issued permit and reviewed against the 2012 codes, with minimum checkpoints including footings, slabs, framing, plumbing, mechanical, energy and final. The county's plumbing, mechanical and gas inspections run alongside the building inspections.
Electrical inspections are performed by state inspectors operating through the utility provider, so that inspection runs on the state track and the utility coordinates the service connection. Keep the county building track and the state electrical track separate so a hold on one is not mistaken for the other.
On a waterfront project, any Tellico Lake or Tennessee River review sits outside the standard building inspection sequence. On an existing building, confirm what was previously permitted against what is standing before a change of occupancy.
Book county inspections through the 24-hour line; the electrical inspection is the state's, performed through the utility provider. Clear the county building final and the state electrical final before a certificate of occupancy.
Loudon County permit search and official resources
Loudon County publishes its Building Department information online, with the City of Loudon, state and TDEC resources that sit alongside it.
- Loudon County Building Codes
- City of Loudon Building / Code Enforcement
- TN Board for Licensing Contractors
- State electrical permits (CORE)
- State Fire Marshal codes enforcement
- TDEC subsurface sewage disposal
Inspections are where schedules slip.
Get a free quote →Frequently asked questions
Who issues building permits in Loudon County, TN?
The Loudon County Building Department, part of Planning and Codes Enforcement at 101 Mulberry Street, Suite 101 in Loudon, for unincorporated Loudon County. Lenoir City, the City of Loudon, Greenback and Philadelphia run their own permitting. The office line is 865-458-4470.
Which building code does Loudon County enforce?
The 2012 editions of the International Building Code, International Residential Code, International Plumbing Code and International Mechanical Code. Note the City of Loudon has adopted newer 2021 codes, so a parcel inside that city is reviewed to a different standard than the county's.
Does Loudon County issue electrical permits?
No. Electrical inspections are performed by state inspectors who operate through the utility provider, so the electrical permit and inspection run through the state rather than the county. The county issues the building, plumbing, mechanical and gas permits.
Do I need a permit for a dock on Tellico Lake?
Waterfront work on Tellico Lake or the Tennessee River can draw additional review beyond the standard building permit, and shoreline structures may involve the reservoir manager as well as the county. Identify any waterfront review early on a lakeside parcel.
Do I need a contractor licence in Loudon County?
A Tennessee contractor licence is required to bid or perform work valued at $25,000 or more, including labour and materials. The same threshold reaches electrical, mechanical, plumbing, HVAC and roofing subcontractors on their own portion; masonry subcontractors are licensed at $100,000.
Do I need a Home Improvement licence in Loudon County?
No. Loudon is not one of the nine Tennessee counties that require the Home Improvement licence. Below the $25,000 contractor threshold there is no separate state home improvement credential here, though local registration and trade licences still apply.
How do I schedule an inspection in Loudon County?
Through the county’s 24-hour inspection request line, 865-458-4680, against the issued permit. County inspectors, certified by the State of Tennessee and the International Code Council, cover footings, slabs, framing, plumbing, mechanical, energy and final; electrical is inspected by the state through the utility.
Do I need a septic approval before a building permit in Loudon County?
On a parcel without public sewer, yes. The state's TDEC subsurface sewage disposal program issues the septic permit, and it must be in hand before the county can issue the building permit. The system is sized to bedroom count.
Is the City of Loudon the same as Loudon County for permits?
No. The City of Loudon runs its own Code Enforcement and enforces newer 2021 codes, while the county Building Department covers the unincorporated area on the 2012 codes. Confirm the parcel before filing, since both the office and the code edition change at the city line.
Does Loudon County have zoning?
Yes. The county administers zoning and subdivision regulations through Planning and Codes Enforcement, alongside the building codes. Confirm the parcel's zoning and any setback requirements with the department before siting the structure.
Does Loudon County 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 county can still breach a covenant, and the county will not have checked, which matters in Loudon County's lake communities.
What inspections does Loudon County require?
The minimum inspections include footings, slabs, framing, plumbing, mechanical, energy and final, scheduled through the 24-hour line against the issued permit. Electrical is inspected separately by the state through the utility provider.
Simplify Loudon County permitting with Alliance Permitting
Loudon County's 2012 codes, its state electrical route through the utility, its Tellico Lake frontage and its newer-code cities reward applicants who confirm the jurisdiction and code vintage, line up the state electrical inspection, and scope any waterfront review early.
Trusted by leading builders, developers, and national contractors — 21+ years of filing in the jurisdictions we write about.
Contractors and builders choose Alliance for Loudon County because the work is done by people who have stood at the counter:
- Right authority — unincorporated county or one of the cities, resolved from the parcel, with the code vintage confirmed.
- State electrical planned — the inspection through the utility provider lined up alongside the county building record.
- Waterfront handled — any Tellico Lake or Tennessee River review identified at the design stage.
- Complete oversight — every Loudon building record, state permit and inspection tracked across your jobs in one place.
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 Loudon County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.