2024 International Residential Code

2024 International Residential Code: IRC for One- and Two-Family Homes

Learn the code. Find it fast. Pass with confidence.

The International Residential Code is a big book. On exam day you have two hours, sixty questions and a stack of tabs, so the hard part is finding the right provision quickly and reading it precisely. This guide teaches the 2024 IRC the way the residential inspector examinations test it, and gives you the practice to do it under time pressure.

Prepare for the ICC B1, M1, P1 and E1 Residential Inspector examinations with a complete, illustrated guide to the 2024 International Residential Code. It has 27 teaching chapters, step-by-step worked examples, proven exam strategy and 300 original practice questions, with every answer explained.

Written for candidates preparing for ICC's B1 Residential Building, M1 Residential Mechanical, P1 Residential Plumbing and E1 Residential Electrical Inspector examinations, it covers the whole residential code in one clear, structured course:

• Teaching chapters covering the IRC from administration and definitions through foundations, framing, wall bracing, roofs, fire safety, egress, energy, mechanical systems, fuel gas, plumbing and electrical. The chapters follow the order of the code and give most space to the topics that carry the most exam questions.
• Built for the 2024 edition, with the renumbered Chapter 3 sections clearly mapped against their 2021 numbers, so you are never sent to the wrong section.
• Worked examples that walk through real lookups and calculations step by step: footing and joist tables, stair layouts, flood openings, attic ventilation, combustion air, dryer duct length, gas pipe sizing, drainage fixture units, service sizing and box fill.
• Clear technical illustrations of the details inspectors check every day, from footings and braced wall lines to vent terminations, water heater relief valves and pool bonding.
• Exam strategy that works: how questions are built, how wrong answers are designed to catch you, a six-step lookup method, a tabbing plan for your code book, and a three-pass system for managing your time.
• Key-value panels, exam insights and common-error warnings in every chapter, so the numbers that change answers stand out.
• Original practice questions in five full-length, timed practice exams: two for B1 and one each for M1, P1 and E1.
• A complete answer key with the correct answer, the governing code section and a clear explanation for every question, plus the chapter that teaches it.

Whether you are a new inspector, a contractor moving into code enforcement, or an experienced professional working toward the R5 Residential Combination Inspector designation, this book turns the residential code into a skill you can use on the exam and in the field.