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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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  • R804.3.5

    Framing of Openings in Roofs and Ceilings

    • Steel roof openings have headers 4 ft or shorter, matching the adjacent members, joined to trimmers with four 2x2 clips and four No. 8 screws per leg.

    International Residential Code, 2024 · Chapter 8, Roof-Ceiling ConstructionRead the full text (opens UpCodes in a new tab)

  • R702.2.2

    Cement Plaster

    • Interior cement plaster coats stay damp 24 hours; the finish goes on 48 hours after the base (two-coat), or 24 then 48 hours apart (three-coat).

    International Residential Code, 2024 · Chapter 7, Wall CoveringRead the full text (opens UpCodes in a new tab)

  • R301.2.1.4

    Exposure Category

    • Exposure B is the default; use C for open terrain that extends more than 1,500 ft, or when the site borders more than 600 ft of open terrain.
    • Exposure D applies facing at least 5,000 ft of open water or flats, and reaches inland the greater of 600 ft or 20 times the building height.
    • In a subdivision, exposure is judged as if neighbouring homes starting within a year are already built.

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

  • R602.11

    Wall Anchorage

    • Braced wall sills are bolted to the foundation; in SDC D and SDC C townhouses, use 3x3x0.229 in plate washers.

    International Residential Code, 2024 · Chapter 6, Wall ConstructionRead 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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