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 4,296 sections for San Antonio, TX, the 2024 IRC

Show another sample

  • E4001.15

    Switches Controlling Lighting Loads

    • A neutral is brought to lighting switch locations in bathrooms, halls, stairs and habitable rooms (one location if the whole room is visible), with up to 5 electronic switches per circuit and 25 per feeder (NEC 404.2(C)).

    International Residential Code, 2024 · Chapter 40, Devices and LuminairesRead the full text (opens UpCodes in a new tab)

  • M1803.3.4

    Clearance

    • Connector clearances: single-wall 18 in (9 in for Type L oil appliances); Type L pipe 9 in (3 in or listed for Type L oil appliances); reductions per Table M1306.2.

    International Residential Code, 2024 · Chapter 18, Chimneys and VentsRead the full text (opens UpCodes in a new tab)

  • R324.4.4

    Glazing in Guards and Railings

    • Glass in guards and railings is always hazardous; glass balusters carry a top rail held by at least three panels unless laminated.

    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)

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