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 677 sections for San Antonio, TX, the 2024 IRC

Show another sample

  • E3902.22

    Arc-Fault Circuit-Interrupter Protection for Branch Circuit Extensions or Modifications

    • Modifying or extending a circuit in those areas requires a combination AFCI at the origin or an outlet AFCI at the first receptacle, unless the extension is 6 ft or less with no new outlets (NEC 210.12(B)).

    International Residential Code, 2024 · Chapter 39, Power and Lighting DistributionRead the full text (opens UpCodes in a new tab)

  • E4001.12

    Dimmer and Electronic Control Switches

    • Dimmers and electronic controls only control permanently connected loads unless listed otherwise, and are marked with their ratings (NEC 404.14(F)).

    International Residential Code, 2024 · Chapter 40, Devices and LuminairesRead the full text (opens UpCodes in a new tab)

  • E3905.12.2.4

    Device or Equipment Fill

    • Each device yoke adds two volumes for its largest conductor, more for wide devices (NEC 314.16(B)(4)).

    International Residential Code, 2024 · Chapter 39, Power and Lighting DistributionRead the full text (opens UpCodes in a new tab)

  • E3903.2

    Habitable Rooms

    • Every habitable room, kitchen and bathroom gets a wall-controlled lighting outlet near the entrance, not relying only on a battery; switched receptacles may substitute except in kitchens, laundry and bathrooms (NEC 210.70(A)(1)).

    International Residential Code, 2024 · Chapter 39, Power and Lighting DistributionRead 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