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

  • R602.10.4.1

    Mixing Methods

    • Methods can change from story to story and line to line; mixing on one line is allowed in SDC A-B (and detached C) if the line uses the most demanding method's length.

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

  • R313.1

    Minimum Height

    Used in checks
    • Habitable rooms and hallways have at least 7 ft ceilings; baths, toilet rooms and laundries at least 6 ft 8 in.
    • With sloped ceilings, the required area has at least 5 ft of headroom and half of it at least 7 ft.
    • A showerhead needs 6 ft 8 in of ceiling over a 30 x 30 in area.
    • Beams, ducts and other obstructions in a habitable basement may hang down to 6 ft 4 in; beams spaced 36 in or more apart may come to 78 in.

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

  • R405.2

    Wood Foundations

    • Wood basements sit on at least 4 in of drained gravel or sand under 6-mil poly; outside Group I soils, a sump at least 24 in across and 24 in deep drains it.

    International Residential Code, 2024 · Chapter 4, FoundationsRead the full text (opens UpCodes in a new tab)

  • R302.2.6

    Structural Independence

    • Each townhouse unit stands on its own structurally, apart from shared foundations, sheathing, coverings, flashing, rated common walls or sprinklered units.

    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.

Check your plans against these codes

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

Start an application