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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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  • R703.9

    Exterior Insulation and Finish System (EIFS)/EIFS With Drainage

    • Barrier EIFS (ASTM E2568) goes only on concrete or masonry; elsewhere use drainable EIFS with 90% drainage and a WRB; both stop 6 in above grade with no trim nailed through.

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

  • R302.15

    Fire-Retardant-Treated Wood

    • Fire-retardant-treated wood has a flame spread index of 25 or less, and in an extended 20-minute test the flame front stays within 10.5 ft.
    • Each FRTW piece is labelled, and is dried to 19% moisture or less for lumber and 15% or less for panels; interior FRTW stays at or below 28% at 92% humidity.

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

  • R1001.2

    Footings and Foundations

    • Fireplace footings are concrete or solid masonry at least 12 in thick, extending 6 in past the fireplace or wall on every side, on undisturbed soil or engineered fill below frost depth.

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

  • R324.4.2

    Glazing Adjacent to Doors

    • Glass beside a door is hazardous if its bottom is under 60 in and it's within 24 in of the door edge, or on the hinge side of an in-swinging door.

    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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