How do you tell what year a building was built?

To determine the year a building was built, you can check the property's tax records, which often include the construction date. Local historical societies or building permits from the municipal office may also provide this information. Architectural features and styles can offer clues about the era of construction, while plaques or inscriptions on the building itself may indicate the date. Online resources, such as real estate databases, can also help identify the year a building was constructed.