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

  • R330.4

    Locations

    • Batteries go in garages, accessory buildings, outdoors 3 ft from doors and windows, or finished utility spaces, never in or opening into bedrooms.

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

  • R602.11

    Wall Anchorage

    • Braced wall sills are bolted to the foundation; in SDC D and SDC C townhouses, use 3x3x0.229 in plate washers.

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

  • R801.3

    Roof Drainage

    • On expansive or collapsible soils, homes need gutters or another controlled roof drain that discharges at least 5 ft from the foundation or into an approved system.

    Local review: San Antonio's expansive clays make this apply to most homes: plan gutters and downspouts that discharge 5 ft or more from the foundation.

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

  • R803.1

    Lumber Sheathing

    • Lumber roof sheathing is at least 5/8 in at 24 in spacing; 1-1/2 in tongue-and-groove spans 48 to 72 in with stronger lumber; no spaced sheathing in SDC D2.

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