Indiana climate, wind & energy-code drivers
- ENERGY STAR climate zone: Northern — coldest climates, U-factor priority (U ≤ 0.27 in coldest tier)
- IECC climate zone: 5A
- Maximum U-factor: 0.3 (IECC 2021 + state amendments)
- Maximum SHGC: No limit (cold climate)
- ASCE 7-22 design wind speed: 110 mph (Risk Category II)
- Hurricane impact-rated requirement: No statewide impact-rated requirement
- Dominant residential frame material: Vinyl frame — dominant in most climates, lowest cost-per-window
- Historic-preservation overlay prevalence: Moderate — selected metro historic districts with review
- EPA RRP lead-safe trigger (pre-1978 housing share): High — 40-60% pre-1978 housing share, EPA RRP required on most replacements
Indiana licensing, lead-safe & permits
- License status: No statewide license — municipal credentials only
- License board: No statewide window license — Marion County (Indianapolis), Hamilton County, and other home-rule municipalities issue local Builder Contractor credentials (official site)
- Permit: city or county building permit required for window opening modification; municipal license required; replacement-only same-size installs typically permit-exempt; high pre-1978 housing share drives mandatory EPA RRP lead-safe certification on Indianapolis-area replacements
How window replacement costs vary in Indiana
State-specific code or insurance rule: Indiana Code §22-12 leaves residential window licensing entirely to municipal Building Departments with Marion County, Hamilton County, Allen County, and Lake County issuing local Builder Contractor credentials but no centralized state board oversees window contractor competency or bond requirements, leaving Indianapolis-area homeowners to rely on municipal license history rather than a state-board examination check, plus EPA RRP lead-safe certification mandatory on every Indiana residential window replacement in pre-1978 housing across Indianapolis, Fort Wayne, Evansville, South Bend, and Gary historic neighborhoods.
Cities in Indiana
Compare window replacement pricing for 21 cities across Indiana.
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