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

  • R807.1

    Attic Access

    • Attics with 30 in of headroom over 30 sq ft or more get a 22 x 30 in access in a hall or other easy spot, with 30 in of clear headroom above a ceiling hatch.

    International Residential Code, 2024 · Chapter 8, Roof-Ceiling ConstructionRead 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)

  • R403.3.1.1

    Attachment to Unheated Slab-on-Ground Structure

    • Where a shallow footing meets an unheated slab, insulation runs between them and continues under the unheated slab, without carrying building loads unless rated for them.

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

  • R902.2

    Fire-Retardant-Treated Shingles and Shakes

    • Fire-retardant shakes and shingles are pressure-treated per AWPA C1 and every bundle is labelled with its class, treater and agency.

    International Residential Code, 2024 · Chapter 9, Roof AssembliesRead 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