Skip to content
Built4UIQ
Log inSign up free

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

Show another sample

  • R703.7

    Exterior Plaster (Stucco)

    • Stucco follows ASTM C926 and C1063: corrosion-resistant lath nailed or stapled 7 in along framing and 24 in between, three coats over lath, two over masonry or concrete.

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

  • R702.6

    Wood Shakes and Shingles

    • Interior shakes and shingles may go straight on studs at 24 in or less, with two hidden fasteners each, or on 1x2/1x3 furring spaced at the exposure.

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

  • R802.4.3

    Hips and Valleys

    • Hip and valley rafters are at least 2 in nominal and as deep as the jack cuts, braced at the ridge to a bearing wall or designed for the load.

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

  • R503.2.2

    Allowable Spans

    • Panel subfloor spans follow the span rating table or APA E30; the common subfloor ratings are 16, 20, 24, 32 and 48 in on center.
    • Sanded plywood used as combination subfloor is at least 1/2 to 1 in thick depending on species group and 16 to 24 in joist spacing.

    International Residential Code, 2024 · Chapter 5, FloorsRead 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.

Check your plans against these codes

Start an application and get every flag with its section and fix.

Start an application