A condemned property or building is one that a municipality (city or town) has closed, seized, or placed restrictions on because it is determined to be unsafe, unsanitary, or otherwise a risk to public health and safety.

The circumstances under which municipalities may condemn properties are usually described in local or municipal ordinances.

In Colorado, the condemnation of property or buildings is governed by local municipal ordinances, which outline the conditions under which a property may be deemed unsafe, unsanitary, or a risk to public health and safety. These ordinances are based on the general police power granted to municipalities to ensure the welfare of their citizens. When a property is condemned, the municipality may require the owner to vacate, repair, or demolish the building. The specific process and standards for condemnation vary by city or town, but generally include an inspection, notice to the property owner, and an opportunity for the owner to address the issues or appeal the decision. If the owner fails to comply with the orders, the municipality may undertake necessary actions to abate the hazard, potentially including seizing the property or demolishing the building, with the costs often being assessed against the property owner. State statutes may also provide additional guidance or requirements for the condemnation process, and in some cases, property owners may be entitled to compensation if a taking for public use is involved, as per the Colorado Constitution and eminent domain laws.