Why do building codes change?

Building codes are updated to address new safety concerns, improve energy efficiency, promote sustainability, accommodate new materials and construction methods and reflect changes in local conditions. Individual municipalities drive most of these updates and the pace varies widely depending on local growth rates, recent weather events and shifts in policy priorities. What was compliant two years ago may not meet current requirements, which is why staying current is an active part of running a roofing business rather than a one-time exercise.

How often do municipal building codes get updated?

There is no standard update cycle. The model codes published by the ICC are revised every three years, but municipalities adopt new versions on their own schedule and many add local amendments when they do. Some jurisdictions update frequently while others hold the same code version for a decade. The only reliable way to know what applies to a specific property is to look it up by address rather than assuming the code you used last time is still current.

What happens if a roofing contractor misses a municipal code change?

Missing a code change can mean submitting an estimate based on outdated requirements, which leads to disputes with adjusters, rejected permit applications and potential liability if the installed roof does not meet current standards. In some jurisdictions, working outside the current code can trigger fines or require rework at your expense. The practical risk is compounded during storm season when high volume makes it easy to rely on familiar assumptions instead of verifying what the current code actually requires.

What are building codes in insurance and why do they matter for claims?

Building codes are the minimum standards that govern how a structure must be built or repaired in a given jurisdiction. In insurance, they matter because any damage that triggers a repair also triggers a compliance requirement: the repaired structure must meet current code, not the code in place when it was originally built. That gap between old construction standards and current requirements is what creates code upgrade costs, which is why policies with ordinance or law coverage exist to protect homeowners from paying those costs out of pocket.

How do building code changes increase the cost of roofing insurance claims?

When codes are updated with stricter requirements for things like wind uplift fastening, expanded ice and water shield zones or upgraded underlayment materials, any repair following a loss must meet the new standard even if the original installation did not. According to Verisk and FEMA data, compliance with updated codes can increase rebuild costs by 20% to 40%. Adjusters who miss these requirements produce underpaid claims, which leads to supplements, disputes and increased leakage.

What is ordinance or law coverage and do homeowners need it?

Ordinance or law coverage, sometimes called code upgrade coverage, is an insurance provision that pays the additional costs of bringing damaged property up to current building codes. It covers three things: the loss of undamaged portions of a structure that must be demolished for compliance (Coverage A), demolition and debris removal costs (Coverage B) and the increased construction costs required by current code (Coverage C). Without it, homeowners can face substantial out-of-pocket expenses after a loss, especially in areas with recently updated or locally amended codes.

Why is getting building code information directly from a municipality so unreliable?

Because the information is rarely in one place and the people who hold it are often hard to reach. A municipality's website may show outdated rules while the employee you get on the phone might give you a different answer than the one posted publicly. The staff member with the most current knowledge is often one or two people deep in the department, and getting to them takes persistence. Compounding this is that codes change regularly and not every jurisdiction communicates those changes consistently.

Why can't I use a property's mailing address to find its governing jurisdiction?

Because postal boundaries and jurisdictional lines do not align. A property with a city mailing address may actually fall under county jurisdiction, and that difference changes which code book applies, what the sales tax rate is and which line items belong in the estimate. Getting the jurisdiction wrong means every downstream figure in your estimate is built on the wrong foundation.

How does OneClick Code solve the problem of finding accurate building codes by jurisdiction?

By automating jurisdiction identification from a property address. Instead of calling the municipality, cross-referencing conflicting sources and hoping the information is current, you type in the address and get the jurisdiction, code requirements, sales tax and supporting documentation instantly. OneClick Code maintains data from over 32,000 municipalities, which is where the accuracy and speed come from.

What are building codes and why do they matter?

Building codes are legally enforceable regulations that set minimum standards for the design, materials and construction of buildings, covering everything from structural integrity to fire safety to roofing requirements. The two main model codes in the US are the IRC (International Residential Code), which applies to residential buildings, and the IBC (International Building Code), which applies to commercial structures. All 50 states have adopted one or both at the state or jurisdiction level, though the specific version and any local amendments vary by address. For roofers and adjusters, codes determine what a compliant repair requires and what belongs in an estimate.

How often do building codes change and why?

Model codes are typically updated every three years by the International Code Council, though individual jurisdictions choose when and whether to adopt each new edition. Adoption often lags the release date by years, which means the code in effect in one county may be two or three editions older than in a neighbouring county. Updates are driven by advances in materials and technology, lessons from natural disasters and shifts in energy efficiency requirements. That lag and variation between jurisdictions is one of the main reasons jurisdiction-level code lookup is more reliable than relying on state or city-level information.

Why do building code requirements vary from one street to the next?

Because codes are adopted and enforced at the jurisdiction level, not the state or city level. A property's governing authority depends on whether it falls within a city boundary, a county boundary or some other special jurisdiction, and those lines do not follow postal addresses. Two properties on opposite sides of the same street can be governed by different authorities that have adopted different code versions with different local amendments. That difference can change ice and water shield requirements, ventilation calculations, permit fees and more.

How do I determine which code version applies to a specific property address?

You need to identify the Authority Having Jurisdiction, whether that is the city, county or state, and confirm which code version they have adopted and what local amendments are in effect. A postal address alone is not sufficient since jurisdictional boundaries frequently do not follow ZIP code lines.

Why isn't it enough to just say "the state uses IBC/IRC XXXX"?

Because many jurisdictions adopt the model code but then add local amendments and some have entirely separate local ordinances. The exact requirements can vary by address, which means a state-level answer is often not specific enough to rely on when writing an estimate or pulling a permit.

What tools make finding local building codes faster and more reliable?

Platforms that accept a property address and return the jurisdiction, adopted code version, local amendments and permit requirements eliminate the manual process of calling building departments and searching PDF archives. OneClick Code does this automatically for any U.S. address.

What are the most common mistakes when researching building codes?

Assuming that all properties in the same ZIP code fall under the same jurisdiction is the most frequent error and can produce a cost or compliance swing of 25% or more. Other common pitfalls include relying on outdated PDFs, skipping local amendment checks and contacting the wrong building department.

How does accurate, address-specific code data benefit contractors and adjusters?

Correct code data means the estimate reflects what the job actually requires, which reduces supplements, speeds permit approval and protects against failed inspections and carrier disputes. For adjusters it means the claim aligns with locally enforceable requirements from the start, cutting cycle time and reducing the likelihood of escalation.