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• R902.1

  Roof Assemblies

  • A fire-rated (Class A, B or C) roof is required where local law says so or where the roof edge is within 3 ft of a lot line, tested to ASTM E108 or UL 790 and labelled.

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

• R608.5.4.1

  Support and Cover

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

• R319.4.4

  Bars, Grilles, Covers and Screens

  • Bars, grilles or covers over escape openings keep the full clear size and release from inside with no key, tool or extra force.

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

• 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)

• R704.2.1

  Vinyl and Aluminum Exterior Soffit Panels

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

• R804.3.2.1

  Minimum Roof Rafter Sizes

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

• R330.1

  General

  • Battery storage rules cover systems of 1 kWh and up, except units listed for habitable space.

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

• R405.2.3

  Drainage System

  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.