The International Property Maintenance Code is a model code published by the International Code Council that sets minimum conditions for keeping existing buildings safe, sanitary, and fit to occupy. It is not law on its own. It becomes binding only where a state legislature or local government has formally adopted it, and most adoptions change the text with local amendments. Roughly 11 states have adopted the IPMC statewide; far more cities and counties have adopted it on their own. Whether it applies to your property, and in what form, depends entirely on where that property sits.
What the IPMC Covers
The IPMC is unusual within the ICC’s family of model codes because it governs buildings that are already standing and occupied, rather than new construction or major renovation. It sets the floor for ongoing maintenance over a building’s life. It applies to residential and commercial properties, and it addresses heating, plumbing, fire safety, exterior upkeep, light and ventilation, and pest control.
The ICC updates the code on a three-year cycle. The 2024 edition is the most recent, but many jurisdictions sit one or two cycles behind because adoption lags publication. The edition in force where you live may be several years older than the current one, and that older text is what governs your property until your jurisdiction adopts a newer version.
How the IPMC Becomes Law Where You Live
A model code sitting on the ICC’s website is a suggestion. It becomes enforceable through a process called incorporation by reference: the adopting law names the specific code and edition rather than reprinting its full text. ICC guidance describes this as citing “only the title, edition and publishing information of the model code.”1International Code Council. Code Adoption Resources Once adopted, the referenced code carries the same legal weight as any other statute. The National Archives handbook on incorporation by reference states that referenced material “has the force and effect of law, just like all regulations” published in the Federal Register and Code of Federal Regulations.2National Archives. Incorporation by Reference Handbook
The IPMC’s adoption pattern is patchy compared to other ICC codes. About 11 states have adopted it statewide. Many more jurisdictions adopt it at the city or county level, which means a property one town over may be governed by a different maintenance standard, a different edition, or no IPMC at all. Before relying on anything in the code, confirm with your local building or code enforcement department which code and which edition your jurisdiction has adopted.
Jurisdictions rarely adopt a model code verbatim. The adopting ordinance typically layers in amendments that add, remove, or modify provisions to fit local conditions. A coastal area might strengthen roofing requirements. A wildfire-prone region might add vent and defensible-space rules. A city with a large stock of historic buildings might soften some material requirements while holding firm on structural safety. Where an amendment conflicts with the model text, the amendment controls. Reading the model code alone will not tell you what applies to your property; you need the adopted version with its local changes.
The Core Maintenance Standards
The IPMC’s substantive requirements are what most readers encounter in practice, whether as owners facing a violation notice or tenants trying to figure out what their landlord owes them. Local amendments can raise these minimums, but the baseline provisions below appear in most adopted versions.
Heating, Plumbing, and Interior Conditions
Heating systems must be capable of maintaining at least 68°F in all habitable rooms, bathrooms, and toilet rooms, measured against the winter design temperature for the area. In milder climates where the average monthly temperature stays above 30°F, the minimum drops to 65°F. Portable space heaters and cooking appliances do not count toward meeting that requirement.3International Code Council. 2021 International Property Maintenance Code When a lease includes heat, the landlord must supply it during the designated heating season to meet those same temperatures.
Every dwelling unit must have a private bathroom with a bathtub or shower and a toilet, and all plumbing must be kept in sanitary working order. Habitable rooms need adequate light and ventilation, natural or mechanical. These are enforceable minimums, not aspirational guidelines.
Fire and Carbon Monoxide Safety
Smoke alarms are required outside each sleeping area, inside each bedroom, and on every story of a dwelling unit including basements. Where multiple alarms are required in a single unit, they must be interconnected so one triggering sets off all of them; wireless interconnection counts. Each alarm needs primary power from the building’s wiring with battery backup, and in one- and two-family homes, alarms must be replaced within 10 years of their manufacture date.4International Code Council. 2018 International Property Maintenance Code – Chapter 7 Fire Safety Requirements
Carbon monoxide detectors are also required in dwellings. The IPMC cross-references the International Fire Code and the International Residential Code for the specific placement rules, so the exact locations depend on which companion codes your jurisdiction has adopted. If your building has fuel-burning appliances or an attached garage, carbon monoxide detection is almost certainly required. Emergency egress paths must remain clear and unobstructed at all times.
Exterior Upkeep and Pest Control
Exterior property must be kept clean, safe, and sanitary. Roofs must be weather-tight. Windows and doors must be in good enough repair to keep out moisture and pests. Occupants are responsible for the areas they control; owners carry broader responsibility for the structure itself.
Pest responsibilities split by building type. In a single-family rental, the tenant handles pest control. In a building with two or more units, the owner is responsible for extermination in shared areas and common spaces. If an infestation in one tenant’s unit results from that tenant’s failure to prevent it, both the tenant and the owner share responsibility. The owner must ensure the property is pest-free before renting it to anyone, and when structural defects cause the infestation, the owner bears full responsibility regardless of the number of units.
“Grandfathering” Is Not a Blanket Exemption
One of the most common misunderstandings about building codes is that older buildings are “grandfathered in” and permanently exempt from newer requirements. There is no blanket grandfathering provision in the IPMC or any other ICC code. The concept has some application in zoning and land use. In the building code world, it carries no formal legal weight.
In practice, code officials generally do not require existing buildings to meet every provision of the latest edition. That tolerance disappears when a condition poses a hazard to life, health, or property. Existing systems that create dangers must be brought up to current standards regardless of the building’s age. Lead in water service pipes, missing thermal expansion protection on water heaters, and inadequate drainage are common examples of conditions that override any informal pass an older building might otherwise get.
When an owner genuinely cannot meet a current requirement without unreasonable hardship, the formal path is a variance from the local authority, reviewed case by case. Nothing is guaranteed. Assuming your building is exempt because it predates the current code is the kind of mistake that produces violations and penalties.
What Happens When a Property Fails Inspection
Code enforcement officers and building officials carry out inspections and have authority to enter properties at reasonable times to document conditions. When a property fails to meet the adopted code, the officer issues a notice of violation identifying the specific deficiencies and setting a compliance deadline. The notice must inform the owner of the right to appeal and of the government’s right to file a lien if it has to perform corrective work itself.
The IPMC itself sets no specific dollar amounts for fines. It states that violators “shall be prosecuted within the limits provided by state or local laws” and that each day a violation continues after notice counts as a separate offense. Daily fines set by local ordinance range widely, from as low as $10 per day in some jurisdictions to $5,000 or more per day in others. Because fines compound daily per violation, owners who ignore notices often end up with bills far larger than the cost of the underlying repairs would have been.
Beyond fines, jurisdictions can place liens on properties to recover the cost of government-performed repairs, boarding, or demolition. A lien is a legal claim that must be satisfied before the property can be sold with clear title. If the debt remains unpaid, the government can ask a court to order the property sold to satisfy the lien. Some jurisdictions skip the lien process and pursue direct civil action for reimbursement instead.
In more serious cases, the code official can condemn the structure.5International Code Council. 2015 International Property Maintenance Code – Chapter 1 Scope and Administration If a vacant structure is unfit for habitation but not in imminent danger of collapse, the officer can post a condemnation placard and order the building closed and secured. If the owner fails to secure it within the specified timeframe, the government can hire contractors to board it up and bill the owner, with the cost becoming a lien. For occupied buildings that are condemned, the officer orders a vacancy, and both occupants who remain and owners who allow them to remain face penalties. For structures that have deteriorated to the point of being dangerous, the officer can order demolition, with those costs likewise attaching as a lien.
Appeals and the 20-Day Window
Owners who believe a code official has misinterpreted the code, or that its requirements do not apply the way the official says they do, have the right to appeal. The IPMC requires a written appeal within 20 days after the violation notice is served. Missing that deadline generally forfeits the right to challenge through the administrative process.
Appeals go to a board of appeals established by the adopting jurisdiction. The board’s authority is limited. It can consider whether the code was correctly interpreted or whether an owner’s proposed alternative meets the code’s intent equally well, but it cannot waive the code’s requirements outright. Three or more board members must agree before the officer’s decision can be modified or reversed. Filing fees vary by jurisdiction and are typically non-refundable.
The administrative appeal is separate from any court challenge. If the board denies the appeal, the owner can still go to court, but the administrative route must usually be exhausted first. Given the 20-day window, an owner who thinks a notice is wrong should consult with a local attorney quickly rather than wait.
Finding the Version That Governs Your Property
Access to adopted building codes has long been complicated by the fact that the ICC claims copyright over its model text even after governments adopt it as law. Courts have steadily reduced that barrier. In 2020, the Supreme Court held in Georgia v. Public.Resource.Org that government officials cannot copyright works created in the course of their official duties, a case that pushed the broader principle forward even though it concerned annotated state statutes rather than model codes directly.6Supreme Court of the United States. Georgia v. Public.Resource.Org, Inc. In 2026, the Third Circuit ruled in ASTM v. Upcodes that posting building codes incorporated into law online is fair use, finding that “enhanced public access to the law is a clear and significant public benefit.”
The practical result is that adopted codes are increasingly available free online. The ICC offers read-only access to many of its codes at codes.iccsafe.org, though the interface is built for professionals.3International Code Council. 2021 International Property Maintenance Code Your local code enforcement department can tell you exactly which edition and amendments apply where you live, and many municipalities publish their adopted code on their own websites. That local version, not the model text, is what governs your property.