Skip to content
Built4UIQ
Log inSign up free

Search the building code.

Every 2024 IRC section and the IBC as it loads, by number or topic, plus the local rules for your city. Free to search.

Detached houses, duplexes and townhouses up to 3 stories with their own exits use the IRC; every other building uses the IBC (IBC 101.2).

A random sample from 237 sections for San Antonio, TX, the 2024 IRC and IBC

Show another sample

  • N1102.1.4

    R-value computation

    • Cavity and continuous insulation are checked separately: sum the layers of each, use settled R-value for blown fill, ignore other materials and air films, and take R-0.6 off insulated siding.

    International Residential Code, 2024 · Chapter 11, Energy EfficiencyRead the full text (opens UpCodes in a new tab)

  • N1101.14

    Certificate

    • A permanent energy certificate is posted near the furnace or utility area (not covering panel labels) listing R-values, window U and SHGC, test results, equipment, solar PV, ERI score, code edition and path, and any solar-ready zone.

    International Residential Code, 2024 · Chapter 11, Energy EfficiencyRead the full text (opens UpCodes in a new tab)

  • N1105.2

    Simulated Building Performance Compliance

    • Performance compliance needs the Table N1105.2 mandatory items, envelope TC within 1.08x (zones 0-2) or 1.15x (3-8), SHGC 0.30 max in zones 0-3, and energy cost at or below 80 percent (fuel-burning) or 85 percent (all-electric) of the reference.

    International Residential Code, 2024 · Chapter 11, Energy EfficiencyRead the full text (opens UpCodes in a new tab)

Searches all 4,276 IRC 2024 sections, 5,532 IBC 2024 sections and defined terms (Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 so far) and each city's local rules as they are added. Section numbers and titles from the International Residential Code and International Building Code, 2024 editions, copyrighted by the International Code Council; the IRC's electrical chapters (34 to 43) follow NFPA 70, the National Electrical Code. Requirements are summarized in our words (IRC Chapters 3 to 43, IBC Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33); read the full text at the link on each result. Local values come from each city's published documents.

Check your plans against these codes

Start an application and get every flag with its section and fix.

Start an application