International Residential Code (IRC)
Building codes are regulations that set out the standards to which buildings and other structures must conform. The International Residential Code (IRC) is one of the codes established in the US by the International Code Council (ICC) and is applied by most of the country’s jurisdictions, as well as in some other countries internationally (where it may be amended to reflect local conditions or local legislation).
It stipulates that anyone who intends to build, alter, repair, renovate or demolish a building or structure to which the code applies, must apply for and obtain the required building permit.
The IRC applies to new one- and two-family dwellings and townhouses which are no taller than three storeys. It is intended to ensure efficient and flexible building designs that protect health and safety and encourage the use of technological advances.
It covers all aspects of construction in a single code, including; building, plumbing, mechanical services, energy conservation, fuel gas and electrical provisions. It offers both a prescriptive approach and a performance approach to determining compliance.
[edit] Related articles on Designing Buildings Wiki
- Building codes.
- Building regulations.
- Design review.
- CE marking.
- International building code (IBC).
- International Code Council ICC.
- International Existing Building Code (IEBC).
- International Zoning Code (IZC).
- Licensed contractors in the USA.
- Performance specification.
- Planning permission.
- Structural engineering codes.
- The role of codes, standards and approvals in delivering fire safety.
- What approvals are needed before construction begins.
Featured articles and news
A now architectural practice looks back at its concept project for a sustainable oceanic settlement 25 years on.
Copyright and Artificial Intelligence
Government report and back track on copyright opt out for AI training but no clear preferred alternative as yet.
Embedding AI tools into architectural education
Beyond the render: LMU share how student led research is shaping the future of visualisation workflows.
Why document control still fails UK construction projects
A Chartered Quantity Surveyor explains what needs to change and how.
Inspiration for a new 2026 wave of Irish construction professionals.
New planning reforms and Warm Homes Bill
Take centre stage at UK Construction Week London.
A brief run down of changes intentions from April in an onwards.
Reslating an ancient water mill
A rare opportunity to record, study and repair early vernacular roofs.
CIOB Apprentice of the Year 2025/26
Construction apprentice from Lincoln Mia Owen wins this years title.
Insulation solutions with less waste for a circular economy
Rob Firman, Technical and Specification Manager, Polyfoam XPS explains.
Recycled waste plastic in construction
Hierarchy, prevention to disposal, plastic types and approaches.
UK Net Zero Carbon Buildings Standard V1 published
Free-to-access technical standard to enable robust proof of a decarbonising built environment.
Prostate Cancer Awareness Month
Why talking about prostate cancer matters in construction.
The Architectural Technology podcast: Where it's AT
Catch up for free, subscribe and share with your network.
The Association of Consultant Architects recap
A reintroduction and recap of ACA President; Patrick Inglis' Autumn update.
The Home Energy Model and its wrappers
From SAP to HEM, EPC for MEES and FHS assessment wrappers.
Future Homes Standard Essentials launched
Future Homes Hub launches new campaign to help sector prepare for the implementation of new building standards.
Building Safety recap February, 2026
Our regular run-down of key building safety related events of the month.























