The 2024 IECC, ASHRAE 62.2-2022, and IRC §45L crosswalk for developers across Kentucky, Indiana, and Ohio.

Code-compliance airtightness verification across multifamily and custom residential construction.

The 2024 IECC, ENERGY STAR MFNC v1.3 (Rev05), and NGBS-2023 collide in mid-2026 — here’s what documentation your project actually needs.

Technical guidance for builders and code officials on IBHS FORTIFIED Roof requirements across Kentucky, Indiana, and Ohio.

Addenda-level changes to ANSI/RESNET/ICC 301, and what to capture in your 45L file before June 30, 2026.

The EPA AIM Act phase-down meets residential HVAC commissioning on every new Louisville install.

Code-required verification, not optional certification, by June 30, 2026.

Whole-building fresh-air requirements under the 2022 standard — what HECS verifies in the field.

One-line dek: A working guide to what the federal rule, 2024 IECC, and ENERGY STAR MFNC actually require on multifamily projects in Louisville, Lexingto…

The Section 45L energy efficient home credit closes for multifamily on a federal statutory date. Builders across Kentucky, Indiana, and Ohio must lock c…