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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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  • R602.10.4.4

    Panel Joints

    • Panel joints land on common studs, and horizontal joints on 1-1/2 in blocking, unless the no-blocking factor is used.

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

  • R1005.9

    Factory-Built Chimney Offsets

    • Where the fireplace instructions are silent on chimney offsets, stay within 30 degrees of vertical and use no more than four elbows.

    International Residential Code, 2024 · Chapter 10, Chimneys and FireplacesRead the full text (opens UpCodes in a new tab)

  • R301.2.2.6

    Irregular Buildings

    • In SDC C and D, an irregular building or portion must be engineered where the irregularity affects it.
    • Bracing may sit on a wood floor cantilever out of plane if the cantilever is no more than four joist depths and the joist, backspan and rim conditions are met.
    • A floor portion carrying no walls or roof may extend up to 6 ft past a braced wall line.
    • A braced panel ending more than 1 ft over an opening below is irregular unless the opening is 8 ft or less with a sized header.
    • A floor or roof opening is irregular when it's larger than 12 ft or half the least floor or roof dimension, whichever is smaller.
    • A hillside house is irregular when the slope is steeper than 1:5, the tallest cripple wall or post is over 7 ft, and under half the lower area is finished living space.

    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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