Kentucky · Windows · Free 2026 permit-fee estimator
Windows permit cost in Kentucky
On a typical $12,500 windows project, Kentucky's statewide median building permit fee is $75 — about 0.60% of cost. Top Louisville metros run higher.
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Kentucky statewide median
$75
≈ 0.60% of $12,500 project cost
Range: $75 (min) – $1,300 (max)
Top 3 Kentucky metros — actual permit fee
The state base × project type stays the same; the metro multiplier is where the swing comes from.
Louisville
$75
Metro multiplier: 1.2× statewide base
Lexington
$75
Metro multiplier: 1.15× statewide base
Bowling Green
$75
Metro multiplier: 0.95× statewide base
Kentucky permit-fee context
Louisville Metro uses ICC × 1.1; Lexington-Fayette similar; smaller counties flat-fee.
Why windows? Like-for-like replacement typically exempt or flat-fee. Permit required only if opening size changes.
What this fee does NOT include
- Plan-review service fees (typically 0.5–1% of cost, separate line)
- Per-trade fees (plumbing, electrical, mechanical — $50–$200 each)
- State-level surcharges (FL DBPR, NJ DCA, OR BCD, etc.)
- Contractor's filing/processing fee
Rule of thumb: budget 1.5–2× the base permit fee for the all-in cost.
Compare window replacement in Kentucky across all lenses
4 sister tools · same project, same stateBefore you sign, run the 5 other state-aware lenses for the same project.
FAQ — Windows permits in Kentucky
How much is a windows permit in Kentucky in 2026?
On a typical $12,500 windows project in Kentucky, the statewide median permit fee runs $75 — about 0.60% of project cost. Major metros run higher: Louisville $75, Lexington $75, Bowling Green $75. Louisville Metro uses ICC × 1.1; Lexington-Fayette similar; smaller counties flat-fee.
Why is the fee higher in major Kentucky metros?
Each Kentucky city/county sets its own multiplier on top of the state base rate. Louisville runs 1.2× because of stricter plan review + structural review + energy-code overhead. Bowling Green sits lower (0.95×) because of less plan-review depth + simpler intake. Rural counties in Kentucky often have flat-fee schedules below even the lowest metro.
What's included in the permit fee vs. what's billed separately?
The permit fee covers the building department's intake + base review. NOT included: plan-review service fees (often a separate line, 0.5–1% of project cost), per-trade fees for plumbing/electrical/mechanical (typically $50–$200 each), and any state-level surcharges (FL adds DBPR 1.5%, NJ adds DCA, OR adds 12% BCD surcharge). Your contractor's filing fee is also separate. Budget 1.5–2× the base permit fee for the all-in cost.
Can I skip the permit and save the fee?
Don't. Working without a required permit fails any future resale inspection (the buyer's inspector WILL flag it), voids your homeowner's insurance for any related claim, and triggers retro-permitting fines that are typically 2–3× the original fee. Kentucky treats unpermitted windows work as a separate violation under state building code. The "savings" become a $1,500 problem at resale on a $500 fee.
Other projects in Kentucky
Disclaimer: Permit fees are jurisdiction-specific and change frequently. These values are 2026 medians — verify against your local building department's current fee schedule before budgeting.