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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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  • E3702.15

    Branch-Circuit Requirement—Summary

    • Multi-outlet circuit requirements are summarized by rating; dwelling circuits serve only that unit, and common-area circuits in a two-family home don't come from a unit's panel (NEC 210.24, 210.25).

    International Residential Code, 2024 · Chapter 37, Branch Circuit and Feeder RequirementsRead the full text (opens UpCodes in a new tab)

  • E3702.2

    Branch-Circuit Ampere Rating

    • A branch circuit's rating is its overcurrent device; multi-outlet circuits are 10, 15, 20, 30, 40 or 50 A (NEC 210.18).

    International Residential Code, 2024 · Chapter 37, Branch Circuit and Feeder RequirementsRead the full text (opens UpCodes in a new tab)

  • E3603.1.1

    Ungrounded Service Conductors

    • A 100 to 400 A dwelling service needs conductors rated at least 83% of the service rating; with no derating, the table sizes apply (NEC 310.12(A)).

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

  • E4003.14

    Reconditioned Equipment

    • Luminaires, lampholders and retrofit kits aren't reconditioned; a retrofit kit per its instructions doesn't count as reconditioning (NEC 410.2).

    International Residential Code, 2024 · Chapter 40, Devices and LuminairesRead 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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