How can I determine the average year of construction of buildings in a city?

Question

Josephine Allen · Accepted Answer

Check the municipal tax records if available, check the toilet tank lid, check the architectural style with Google Earth.

With the exception of in-fill and new construction, most cities now provide online access to municipal property tax assessment records for the majority of their neighborhoods. If you check a dozen or so properties and they all seem to have been built in roughly the same year, you've got your answer. Oddly enough, water tanks and furnaces may also have dates on them; if you live in the neighborhood, you can check the underside of the toilet tank lid for the date the tank was installed—it will be close to the time the neighborhood was built. For an accurate representation of the architectural style in the community, you can also look up Google Earth street view; the results should be accurate to the closest decade.

Samuel Albin · Answer

undefined To determine the average year of construction of buildings in a city, you can follow these steps:

1. Gather data on the year of construction for each building in the city.
2. Calculate the total sum of the years of construction for all buildings.
3. Count the total number of buildings in the city.
4. Divide the total sum of years by the total number of buildings to calculate the average year of construction.