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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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  • G2407.5

    Indoor Combustion Air

    • Indoor air must provide enough volume for all appliances, using the standard method or, for tight homes under 0.40 ACH, the known-infiltration method; rooms open to the space count.

    International Residential Code, 2024 · Chapter 24, Fuel GasRead the full text (opens UpCodes in a new tab)

  • P2903.1

    Water Supply System Design Criteria

    • Water systems are sized for peak demand using minimum flow and pressure at each outlet, e.g. shower 2.5 gpm at 20 psi, lavatory 0.8 gpm at 8 psi, tank toilet 3 gpm at 20 psi.

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

  • E4002.3

    Receptacle Terminations

    • Receptacle terminals not marked CO/ALR take copper or copper-clad aluminum; push-in terminals are for 15 A circuits and 14 AWG solid copper unless listed otherwise.

    International Residential Code, 2024 · Chapter 40, Devices and LuminairesRead the full text (opens UpCodes in a new tab)

  • R404.1.2.1

    Masonry Foundation Walls

    • Masonry foundation walls are sized from the plain or reinforced tables by wall height, backfill height and soil class; rubble stone isn't allowed in SDC D or for townhouses in C.
    • Unbalanced backfill is measured from outside grade down to the footing top or inside grade, or to the top of an interior slab bearing against the wall.

    International Residential Code, 2024 · Chapter 4, FoundationsRead 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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