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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 4,296 sections for San Antonio, TX, the 2024 IRC

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  • E3705.5.2

    Overcurrent Devices of the Next Higher Rating

    • The next standard breaker size up is allowed if the circuit doesn't feed multiple receptacles and the result is 400 A or less (NEC 240.4(B)).

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

  • R309.2

    One- And Two-Family Dwellings Automatic Sprinkler Systems

    • The model code requires sprinklers in new one- and two-family homes; additions to unsprinklered homes are exempt.

    Local review: Texas law bars cities from requiring sprinklers in one- and two-family homes; confirm San Antonio deletes this before enforcing.

    International Residential Code, 2024 · Chapter 3, Building PlanningRead the full text (opens UpCodes in a new tab)

  • E3908.13

    Equipment Grounding Conductor Size

    • Wire EGCs are sized by the upstream breaker (14 Cu at 15 A up to 3 Cu at 400 A), never larger than the circuit conductors, and upsized proportionally when the circuit is (NEC 250.122).

    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.

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