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

  • R609.8

    Mullions

    • Mullions are tested to AAMA 450 or engineered, deflect no more than L/175, and hold 1.5 times design load with 0.4% or less permanent set.

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

  • R703.2

    Water-Resistive Barrier

    • Every exterior wall gets at least one continuous water-resistive barrier behind the siding and deck ledgers: No. 15 felt, ASTM E2556 wrap, foam WRB systems or tested alternatives.
    • Felt and house wrap run horizontally, lapped 2 in at horizontal seams and 6 in at vertical joints.
    • Unconditioned sheds and playhouses skip the barrier if the siding is on bare studs, the walls are uninsulated and unfinished inside.

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

  • R903.2

    Flashing

    • Flash at copings, wall-roof joints, slope or direction changes, openings and where an eave meets a sidewall (kick-out); metal flashing is at least 26-gauge (0.019 in).

    International Residential Code, 2024 · Chapter 9, Roof AssembliesRead the full text (opens UpCodes in a new tab)

  • R306.3.1

    Location and Site Preparation

    • New or substantially improved coastal buildings sit landward of mean high tide; altering dunes or mangroves needs an engineering analysis.

    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