County assessor regarding the new appraised value.

[Elvis Dur]

Just finished a rehab project. Took me around 3 months but it's finally done.

County assessed value before the rehab was $99.300  and that's for 2016. I put around 30k into the project. Changed the roof, some plumbing, electric, replaced  the water heaters, furnace, new carpet and flooring , new paint , new appliances, new bathrooms..

My question is how do I get the new market value of the property after finalizing the project.

I'm gonna hire a personal appraiser do get an idea of how much the property it's worth now after the rehab...but I wonder how the county assessor gets the new value of the property in their books for this year 2017. 

Do I have to call them ??? or what's the procedure???

Thank you all  in advance!