2021 International Residential Code — Ava one- and two-family

Ava adopted IRC 2021 with appendices AA, AB, AC, AD, AE, AG, AH, AJ, AK, AM, and AN (Ord. 1163, Sec. 18-52). Typical staff questions: • New house, addition, garage, deck, and basement finish on a 1–2 family dwelling → IRC, not IBC. • Townhouses → IRC if they meet the IRC townhouse definition; otherwise IBC. • Multifamily (apartments) → IBC, not IRC. • Smoke alarms and CO alarms in new construction areas must be interconnected (Ava Chapter 18). • Electrical in dwellings still follows NEC 2020 as adopted, with Ava’s #12 AWG minimum (stricter than NEC 14 AWG lighting circuits). • Energy: IECC 2021 also adopted. • Pools/spas: ISPSC 2021. R101.1 insert: City of Ava. Official book is on file with the City Clerk.