Do I need a permit for window replacement in
Dalton, Georgia?

Dalton's adoption of the Georgia Energy Code (based on IECC 2015) creates a unique local angle: replacement windows must meet the U-factor requirement for climate zone 3A (0.32 max for double-hung, casement, and similar operable types), but the Building Department does not flag this in a pre-permit consultation — it surfaces during final inspection or TDS (Transfer Disclosure Statement) review. This is different from neighboring communities like Marietta or Atlanta, which conduct energy-compliance pre-screening at plan review. Dalton also treats historic-district windows (the Dalton Historic District along Hamilton Street and surrounding blocks) as requiring Design Review BEFORE permit issuance, which adds 1–2 weeks to the timeline. For standard residential like-for-like swaps outside historic overlay, the City of Dalton Building Department exempts the work if you document that the opening dimensions, sill height, and frame depth match the existing unit exactly; however, any egress window in a bedroom or basement must still meet IRC R310 (sill height ≤44