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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 1,598 sections for San Antonio, TX, the 2024 IRC

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  • R311.5

    Interconnectivity

    • Multiple CO alarms are interconnected (wireless is fine); existing areas are exempt unless finishes are opened or an attic, crawl or basement gives access.

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

  • R302.11

    Fireblocking

    • Wood framing gets fireblocking at every floor and ceiling line, every 10 ft horizontally, at soffits and drop ceilings, at stair stringer ends and around penetrations.

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

  • R301.2.1.2

    Protection of Openings

    • In windborne debris regions, exterior glazing needs large-missile impact protection; garage door glazing uses an approved impact standard or ANSI/DASMA 115.
    • Precut wood structural panels can serve as opening protection if they are at least 7/16 in thick and span 8 ft or less, with anchors installed permanently.
    • Max anchor spacing for debris-protection panels depends on anchor type and panel span; anchors embed at least 2 in.

    International Residential Code, 2024 · Chapter 3, Building PlanningRead 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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