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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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  • R607.4

    Isolated Panels

    • Exterior glass block panels are capped at 144 sq ft (standard, at 20 psf) or 85 sq ft (thin, 20 psf max); interior panels 250 or 150 sq ft.

    International Residential Code, 2024 · Chapter 6, Wall ConstructionRead the full text (opens UpCodes in a new tab)

  • P2904.1

    General

    • Home sprinklers follow NFPA 13D or P2904 (wet systems without antifreeze); no backflow preventer is needed if piping meets P2906, no antifreeze and no fire department connection.

    Local review: Texas law generally keeps cities from requiring sprinklers in one- and two-family homes, so this section usually applies only when a builder installs one voluntarily; confirm for the project.

    International Residential Code, 2024 · Chapter 29, Water Supply and DistributionRead the full text (opens UpCodes in a new tab)

  • M1408.3

    Location

    • Floor furnace registers sit 6 in from walls, 12 in from doors and drapes, 5 ft below projecting combustibles, not on slab-on-grade, and clear of door swings by 12 in.

    International Residential Code, 2024 · Chapter 14, Heating and Cooling Equipment and AppliancesRead 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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