2025 New York State Residential Code

The 2025 Residential Code of New York State governs the construction, alteration, and maintenance of one- and two-family homes and townhouses up to three stories. Based on the 2024 IRC with NY-specific amendments, it provides comprehensive guidance on building design, structural systems, and safety requirements. Effective December 31, 2025, all new permits must comply with updated standards. Energy rules are enforced separately under the 2025 Energy Code. While electrification updates were included, restrictions on fossil-fuel systems in new homes are currently suspended. Essential for builders, designers, and homeowners to ensure safe, compliant residential construction.