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Tentative assessment roll links
The following site has tentative assessments, as well as photos (where available), tax maps, tax info, inventory, etc., that can be searched by name, physical address, or tax map number:
http://imo.co.washington.ny.us/disclaimer.aspx
The main county site also has a link for 2012 tentative assessment rolls, and will display the actual rolls as printed & given to the assessors (scroll down the main page to find the link & info):
http://www.co.washington.ny.us/
Below is the link for the July 1st, 2018 final assessment roll information.
Final assessment Roll update info

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