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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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  • R302.14

    Combustible Insulation Clearance

    • Keep combustible insulation at least 3 in from recessed lights, fan motors and other heat sources unless the listing allows less.

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

  • R606.12.2

    Seismic Design Category C

    • Townhouse masonry in SDC C keeps 20-35% of each wall solid (segments 3 ft or more, gaps 18 ft or less), with No. 4 bars at corners, openings, ends and 10 ft, and connectors at 4 ft for 200 plf.

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

  • R302.2.5

    Parapet Construction

    • A parapet matches its wall's rating, has a noncombustible top 18 in on the roof side, and rises to meet a roof steeper than 2:12 within 3 ft.

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

  • R703.7.3

    Water-Resistive Barriers

    • Stucco needs two layers of Grade D paper (or equal), or one 60-minute layer behind a drainage layer; in humid (A) climates, add a 3/16 in drainage gap or 90% efficient drainage.

    Local review: San Antonio is a moist (2A) climate, so stucco needs the drainage gap or drainage mat.

    International Residential Code, 2024 · Chapter 7, Wall CoveringRead 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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