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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

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  • E3604.1

    Clearances on Buildings

    • Open service conductors stay at least 3 ft from doors, porches, decks, stairs, balconies and the sides and bottom of opening windows (NEC 230.9(A)).

    Local review: CPS Energy sets its own meter, service-drop and point-of-attachment requirements in San Antonio; check its service standards alongside these.

    International Residential Code, 2024 · Chapter 36, ServicesRead the full text (opens UpCodes in a new tab)

  • E3903.3

    Additional Locations

    • Hallways, stairways, garages and the outside of each grade-level egress door (not vehicle doors) get a wall-controlled lighting outlet; a bulkhead stair light may be inside within 5 ft of the bottom riser (NEC 210.70(A)(2)).

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

  • E3902.20

    Location of Arc-Fault Circuit Interrupters

    • AFCIs are installed where readily accessible (NEC 210.12).

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

  • E3602.1

    Ampacity of Ungrounded Conductors

    • Ungrounded service conductors carry at least the load: 100 A, 3-wire minimum for a one-family dwelling and 60 A for other installations (NEC 230.42(B), 230.79).

    International Residential Code, 2024 · Chapter 36, ServicesRead 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.

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