The Land Information Department oversees and manages local assessment data for all Towns, Villages and Cities within the County. Only the assessed value for land and improvements is collected from the local Assessors. Details regarding the improvements on a property such as building age, square footage or number of bedrooms is maintained by the local assessor. A number of municipalities have this detailed information available on a separate website.
Here is a list of the municipalities which have detailed assessment data available along with a link to their site.